title stringlengths 0 901 | abstract stringlengths 3 9.89k | PMID int64 22 25.3M | embedding listlengths 768 768 |
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[Supraregional operation control system for rescue and repatriation flights]. | The air rescue service, organized by regions in the Federal Republic of Germany, is conducted by helicopters and comprises 24 operation stations. 9 independently operating airline companies take part in supraregional repatriation flights. The coordination of the availability of regionally controlled rescue helicopters ... | 618,366 | [
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Detection of tricuspid regurgitation with two-dimensional echocardiography and peripheral vein injections. | "Contrast echocardiography", utilizing a two-dimensional ultrasound system and peripheral venous injections, was used for the detection of tricuspid regurgitation in 30 patients. The appearance of contrast in the inferior vena cava and the back and forth movement of contrast across the tricuspid valve were considered e... | 618,379 | [
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Comparison of effects of nitroprusside and prazosin on left ventricular function and the peripheral circulation in chronic refractory congestive heart failure. | We compared cardiocirculatory actions of nitroprusside (NP) to prazosin (PZ) in eleven chronic coronary patients with refractory congestive heart failure. Each drug equally lowered systemic arterial pressures mildly while heart rate was unaltered. NP decline (P less than .001) in left ventricular filling pressure (28 t... | 618,383 | [
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Active valvulitis associated with chronic rheumatic valvular disease and active myocarditis. | From ten patients aged 15 to 40 years with chronic rheumatic valvular disease and histologically proved Aschoff bodies of active rheumatic myocarditis, the valves were evaluated for incidence, distribution and degree of severity of active inflammation. Prior to death, there had been clinical evidence of active rheumati... | 618,387 | [
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Improved efficiency of treadmill exercise testing using a multiple lead ECG system and basic hemodynamic exercise response. | One hundred consecutive men with a normal ECG at rest had a maximal treadmill test using 14 leads during and post-exercise. Coronary arteriography performed the following day revealed coronary stenoses greater than or equal to 70% in 66 patients. Test results obtained from a V5 lead were compared to different lead comb... | 618,400 | [
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Smokers' polycythemia. | Twenty-two smokers with elevated hematocrits (mean, 54 per cent) had elevated blood carboxyhemoglobin (mean, 11.6 per cent; normal, less than 1 per cent) and a "left-shifted" oxygen-hemoglobin dissociation curve (mean P50, 21.6 +/- 2.3 [+/- S.D.] torr; normal, 26.7 +/- 1.1). Red-cell volume was increased in 14 of 18, a... | 618,465 | [
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Rokitansky-Kuster-Hauser syndrome and leiomyoma uteri. | A large leiomyoma found in a patient with Rokitansky-Kuster-Hauser syndrome 8 years following McIndoe's procedure for the creation of an artificial vagina emphasizes the need for continued long-term gynecologic care of these patients who are theoretically at average risk for the development of myometrial or ovarian neo... | 618,481 | [
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Intraoral field block anesthesia for extraoral lesions. | Intraoral field block anesthesia for extraoral surgical procedures provides a technique which is both extremely safe and easy to administer. As with all local anesthetics, injected volumes should be monitored at all times. Hemostasis may be augmented, if necessary, with topical epinephrine solution. When vasoconstricto... | 618,498 | [
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The physician's knowledge of psychotropic drugs: preliminary results. | A questionnaire about three commonly prescribed psychotropic drugs was administered to physicians and trainees in two specialties and to medical students. Psychiatrists and psychiatric residents had very low levels of knowledge about the physiology, pharmacology, and side effects of diazepam; their scores did not excee... | 618,526 | [
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Adaptive and pathogenic aspects of sex-role stereotypes: implications for parenting and psychotherapy. | There has been considerable controversy concerning adaptive versus pathogenic effects of sex-role stereotypes on individual development. The author evaluates both the positive and negative consequences of sex-role stereotypes without regard for any particular sociocultural definition of masculinity or feminity. She hyp... | 618,528 | [
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Kinetic and equilibrium studies on steroid interaction with human corticosteroid-binding globulin. | Kinetic and equilibrium studies on the interaction of steroids with human corticosteroid-binding globulin (CBG, transcortin) were performed with pH, temperature, and steroid structure as variables. Dissociation rate constants were determined fluorometrically; the values for cortisol, corticosterone, deoxycorticosterone... | 618,541 | [
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Interaction of the peptide bond with solvent water: a vapor phase analysis. | A dynamic technique, using radioactivity as a means of detection, makes it possible to measure the partial pressures of highly polar compounds in dilute aqueous solution. The results can be expressed in terms of the dimensionless distribution coefficient for transfer of a compound from dilute aqueous solution to the va... | 618,544 | [
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Antibody-dependent lymphocyte-mediated granulocyte cytotoxicity in man. | Sera from two patients with granulocytopenia associated with collagen vascular disease caused the destruction of normal human granulocytes by autologous lymphocytes in vitro. Granulocyte cytotoxicity was measured by the release of 51Cr during incubation with test sera and lymphocytes in microtiter plates. Between 8% an... | 618,559 | [
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The mechanism of K+-induced vasodilation of the coronary vascular bed of the dog. | We tested a number of hypotheses concerning the mechanism of K+-induced vasodilation of the coronary vascular bed. Blood flow in the circumflex artery was measured in pentobarbital-anesthetized, open-chest dogs. Intracircumflex artery bolus injections of 40 mumol of isomotic KCl produced decreases in coronary vascular ... | 618,600 | [
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Cardiac structure growth pattern determined by echocardiography. | Using M-mode echocardiography, we measured dimensions of the ventricular walls and cavities, great vessels, and left atrium and atrioventricular valve excursions on 93 infants and children without heart disease. The data were analyzed by relating each dimension in mm to body surface area in m2 and the 90% tolerance lim... | 618,616 | [
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Combined double chambered right ventricle and discrete subaortic stenosis. | Nine cases of combined double-chambered right ventricle (DCRV) and discrete subaortic stenosis (DSAS) are presented. A review of 1077 consecutively catheterized patients indicates an association of these two uncommon anomalies nine times greater than expected. One or both obstructive lesions may be hemodynamically sign... | 618,618 | [
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The prognostic implications of acute myocardial infarct scintigraphy with 99mTc-pyrophosphate. | The predictive value of the myocardial scintigraphy with 99mTc-pyrophosphate was studied in 100 patients admitted to the coronary care unit with suspected acute myocardial infarction. None of the 21 patients with normal scintigrams had acute myocardial infraction by other criteria. Fifty-five percent of patients with d... | 618,620 | [
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Automated enzymic measurement of total cholesterol in serum. | We describe a completely automated enzymic system for measuring total cholesterol in serum. All reagents are contained in an analytical test pack and the test is performed on Du Pont's Automatic Clinical Analyzer (aca), which mixes the sample (20 microliter) and reagents and performs the necessary absorbance measuremen... | 618,640 | [
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Simple determination of high urinary excretion of 5-hydroxyindole-3-acetic acid with ferric chloride. | We describe a method for determination of urinary 5-hydroxyindole-3-acetic acid, a metabolite of serotonin and tryptophan and a useful indicator of metastasizing carcinoid tumor. The analysis is based on the color development with ferric chloride added to the residue obtained on evaporating a diethyl ether extract of t... | 618,646 | [
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Gas-liquid chromatographic determination of nicotine and cotinine in plasma. | We report a procedure for determining nicotine and cotinine in plasma. Nicotine is extracted from 1 ml of plasma with diethyl ether, back extracted, and analyzed by gas-liquid chromatography with a nitrogen/phosphorus detector. Nicotine and its internal standard, modaline, had retention times of 1.9 and 2.9 min, respec... | 618,667 | [
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The utility of clonazepam in epilepsy of various types. Observations with 22 childhood cases. | Clonazepam, a new anticonvulsant, appears to be useful for childhood minor motor seizures and for petit mal refractory to Ethosuximide and Trimethadione. It appears less effective in infantile spasms though may be beneficial when there is no response to steroids. It is variably effective in partial complex and focal ep... | 618,701 | [
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Binding of quinidine to plasma proteins in normal subjects and in patients with hyperlipoproteinemias. | Quinidine in the plasma binds to various lipoproteins as well as to albumin. With the use of computer simulations the effect of varying the serum level of each of the lipoproteins as well as albumin was examined. The results suggested that the overall binding of quinidine is relatively insensitive to changes in any one... | 618,708 | [
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Inhibition of growth of mouse ehrlich ascites by normal tissue extracts. | A dialyzable component from the aqueous extracts of mouse skeletal muscle and liver inhibited in vitro growth of a mouse Ehrlich ascites. A similar component was not detected in extracts of spleen, kidney, lung, skin, serum or small intestine. The muscle component appeared to be different from that of the liver in its ... | 618,722 | [
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Failure of morphine to increase striatal 3,4-dihydroxyphenylacetic acid in fasted rats. | Morphine given to rats fed ad libitum increased the striatal levels of DA and DOPAC while naloxone had no effect. Conversely, after prolonged fasting, morphine failed to increase both DA and DOPAC, while naloxone markedly decreased striatal DOPAC concentration. Intermediate sensitivity to the DOPAC increasing effect of... | 618,726 | [
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Monitoring trends in food utilization: application of an archaeologcial method. | Archaeological methods were utilized to monitor trends in food purchase and utilization behavior in Tucson, Arizona households through the analysis of household refuse. As a supplement to traditional methods of collecting data on food consumption, the study of household refuse can provide information on short-term tren... | 618,755 | [
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Dihydroergotoxine-induced modulation of spontaneous activity of cultured rat Purkinje cells. | We use nerve tissue cultures as a model system for studying the mode of action of centrally acting drugs. Neurons in cerebellar cultures retain a number of organ-specific properties including the formation of complex synaptic networks and characteristic bioelectric activity. Electrical activity may be recorded from Pur... | 618,780 | [
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On the role of the pineal in thermoregulation in the pigeon. | Diurnal rhythm in body temperature of pigeons subjected to different experimental conditions (pinealectomized, sham-operated, melatonin-implanted, cold-exposed) was studied under a 12 h light and 12 h dark regimen. The body temperature of pigeons during photophase was higher than that during scotophase in the normal as... | 618,782 | [
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Early stages of arthrospore maturation in Streptomyces. | In the sporogenesis of Streptomyces, two basic stages can be considered: sporulation septum synthesis and arthrospore maturation. Most of the information about the ultrastructural changes accompanying the sporogenesis refer to the first stage of the process, but nothing has been published about the evolution of the spo... | 618,842 | [
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0.6336551,
0.2491848,
-0.2146786... |
Use of the integrated steady state rate equation to investigate product inhibition of human red cell adenosine deaminase and its relevance to immune dysfunction. | The analysis of progress curves using the integrated rate equation was applied to the adenosine deaminase-catalyzed conversion of adenosine to inosine. Adenosine deaminase was purified from human red blood cells of phenotypes ADA 1, ADA 2, and ADA 2-1. For all three types, no measurable product inhibition by inosine wa... | 618,871 | [
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Isolation and partial characterization of an endogenous inhibitor of ceramide glycosyltransferases from rat brain. | A heat-stable factor has been extracted from the microsomal membranes of rat brain that inhibits the activities of rat brain ceramide galactosyl- and glucosyltransferases. It is nondialyzable, susceptible to proteolytic enzymes but resistant to DNase and RNase, and has no effect on lysosomal hydrolytic enzymes. The fac... | 618,873 | [
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Human blood group glycosyltransferases. I. Purification of n-acetylgalactosaminyltransferase. | An N-acetylgalactosaminyltransferase, which converts blood group O red blood cells to A cells, was purified to homogeneity from plasma of blood group A1 subjects. The enzyme was adsorbed on Sepharose 4B, and after washing out the impurities, the enzyme was eluted with UDP. This procedure resulted in a 70,000- to 100,00... | 618,875 | [
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0.... |
Comparative studies of Hb Lepore Boston, Hb A2, and Hb A. | Several functional tests were performed to compare Hb A, Hb A2, and Hb Lepore Boston, which has a delta-beta crossover in the region of residues 87 to 116. Oxygen equilibrium curves determined by an automatic apparatus in 0.1 M potassium phosphate buffer, pH 7.0, at 20 degrees showed that the p50 was 5.8 mm Hg for Hb L... | 618,877 | [
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... |
Permselectivity of the glomerular capillary wall. Facilitated filtration of circulating polycations. | To examine the electrostatic effects of fixed negative charges on the glomerular capillary wall, polydisperse [(3)H]DEAE dextran, a polycationic form of dextran, was infused into 10 Munich-Wistar rats. Fractional clearances of DEAE ranging in radius from 18 to 44A were determined in these rats, together with direct mea... | 618,914 | [
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Clinical utility of a rapid diagnostic test series for elderly psychiatric outpatients. | Psychiatric evaluation of the elderly is especially difficult for several reasons, e.g., the presence of organic impairment, the effects of multiple drug therapy, and the tendency to confuse the normal concomitants of aging with neurotic symptoms. The authors have developed and evaluated a brief series of self-report a... | 618,950 | [
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A multidimensional approach to religiosity and disengagement. | This study of 106 elderly Central Missourians examines religious behavior as an indication of "disengagement." It is argued that religiosity must be measured in both organizational forms such as attending religious services and the more subjective nonorganizational forms including prayer and listening to religious serv... | 618,958 | [
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UV-induced unscheduled DNA synthesis in guinea pig skin melanocytes isolated in culture. | Pigmented melanocytes isolated in culture from the epidermis of guinea pig ears were used to study the unscheduled DNA synthesis (UDS) induced by ultraviolet (UV) irradiation at 254 nm. After irradiation, the cells were labeled for 6 hr with 3H-thymidine (3HTdR), fixed, dehydrated, and flat embedded in Epon. Radioautog... | 618,975 | [
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Heterogeneity of human factor VIII. I. Characterization of factor VIII present in the supernatant of cryoprecipitate. | Recent observations suggest that plasma F VIII consists of a series of molecules with different molecular weights. The data described in this paper suggest that sup F VIII represents the molecules with relatively low molecular weights whereas the molecules with the highest molecular weights appear in cryo F VIII. Sup F... | 618,989 | [
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Spinal cord vasculitis presenting as a spinal cord tumor in a heroin addict. Case report. | Progressive quadriparesis in a heroin addict was diagnosed on the basis of clinical and myelographic findings as an intramedullary cervical spinal cord tumor. A biopsy of the enlarged cervical spinal cord showed myelomalacia, vasculitis, and many doubly refractile bodies in the parenchyma and vessel walls. | 619,014 | [
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Thiamin requirement of channel catfish fingerlings. | In separate 20 and 12 week feeding studies, channel catfish fingerlings were fed semipurified diets containing five levels (0, 2.5, 5.0, 10.0 and 15.0 mg/kg) and six levels (0, 0.5, 1.0, 2.5, 5.0 and 10.0 mg/kg) of supplemented thiamin hydrochloride respectively. The dietary thiamin level required to provide maximal gr... | 619,038 | [
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... |
Effect of branched-chain keto-acids and dietary protein content on the activity of branched-chain amino acid transferase in rat tissues. | Rats fed branched-chain keto-acids in place of branched-chain amino acids exhibited increased specific activity of branched-chain amino acid transferase (BATase) in muscle, intestine, brain and liver as compared with controls fed sufficient diet to achieve comparable weight gain. This increase was observed whether or n... | 619,041 | [
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0.1010757,
... |
The radiolucent esophageal foreign body: an often-forgotten cause of respiratory symptoms. | Three children under 2 years of age with a history of respiratory symptoms for one to seven months, secondary to a radiolucent esophageal foreign body, are presented. Delay in diagnosis resulted in an acquired tracheosophageal fistula in two patients and a thoracotomy in all three patients. Physicians alert to the clin... | 619,079 | [
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Direct and indirect determination of binding constants of drug-protein complexes with microparticles. | Albumin can be immobilized in microparticles of poly-acrylamide in such a way that its ligand-binding properties are retained. With radiolabeled salicylic acid, warfarin, and tryptophan, the same characteristics are obtained for binding to albumin in the microparticles as in free solution. The particles can be used con... | 619,095 | [
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GLC determination of meperidinic and normeperidinic acids in urine. | A GLC procedure for the determination of meperidinic and normeperidinic acids in human urine is described. After the extraction of any interfering meperidine or normeperidine, the urine samples are dried and the acids are reesterified using ethanol-sulfuric acid. The resulting meperidine and normeperidine are then extr... | 619,098 | [
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Frequency distribution of bilirubin intrinsic clearance in adult male sprague--dawley rats. | The intrinsic body clearance of bilirubin was determined in 48 adult male Sprague--Dawley rats that received an intravenous infusion of bilirubin. The intrinsic body clearance was calculated from the infusion rate, the steady-state plasma concentration of total (free and protein-bound) bilirubin, and the free fraction ... | 619,113 | [
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Quantitative determination of amitriptyline in blood. | An assay was developed and standardized for amitriptyline and its hydroxylated tertiary amine metabolites in blood and other biological tissues. This method is capable of determining 5--15 ng of these compounds/ml and is based on reacting the drug as base with 9-bromomethylacridine to form a quaternary product which, o... | 619,116 | [
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The quantitative disposition of procainamide and N-acetylprocainamide in the rat. | The objectives of this study were to investigate: 1) the rat acetylator phenotype, 2) the systemic availability of oral procainamide (PA), 3) the kinetic disposition of PA and its N-acetyl metabolite (NAPA) and 4) the relationship between PA dose and steady-state blood PA and NAPA levels. The rat acetylator phenotype s... | 619,132 | [
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Replacement of the disulfide bond in oxytocin by an amide group. Synthesis and some biological properties of (cyclo-(1-L-aspartic acid,6-L-alpha,beta-diaminopropionic acid))oxytocin. | As part of a continuing investigation of the steric and electronic functions of the disulfide group in neurohypophyseal hormones on their biological activity, the synthesis of "oxytocin lactam", [cyclo-(1-aspartic acid,6-alpha,beta-diaminopropionic acid)]oxytocin, has been undertaken. The protected nonapeptide was prep... | 619,141 | [
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Synthesis and comparative skeletal muscle relaxant activity of some 2,4-imidazolidinediones and their corresponding 5-hydroxy-2,4-imidazolidinediones. | A series of 5-hydroxy substitution products of 2,4-imidazolidinediones, including the 5-hydroxy metabolite of the skeletal muscle contraction antagonist, dantrolene sodium, has been synthesized and evaluated for skeletal muscle relaxant activity. Most of these analogues are active in vivo with iv administration and in ... | 619,142 | [
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Potential antitumor agents. 26. Anionic congeners of the 9-anilinoacridines. | To investigate the possible importance of small levels of sulfonamide anion in the antileukemia (L1210) 4'-(9-acridinylamino)methanesulfonanilides, an anionic derivative was prepared, in which -COOH replaced -NHSO2CH3, and shown to have experimental antitumor activity. Analogue synthesis and evaluation show that accept... | 619,148 | [
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Evaluation of medical students during a clinical clerkship in internal medicine. | During a three-month clinical clerkship in medicine 175 medical students were evaluated. A proficiency assessment process was developed which included preceptor evaluation of on-the-job performance as well as independent oral and written examinations. Analysis of data from this study disclosed small correlations among ... | 619,156 | [
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Experiences with parieto-occipital flaps in hair transplantation. | Parieto-occipital flap operations were successfully performed on patients with hereditary or traumatic baldness. The indications for this procedure, the techniques of the operation, and the postoperative morbidity and complications are described. | 619,196 | [
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0.087646... |
C-peptide secretion and insulin antibodies as determinants of stability in diabetes mellitus. | The relative significance of residual beta-cell secretory activity and human insulin antibodies in determining diabetic stability has been examined in 35 diabetic subjects. The response of plasma C-peptide immunoreactivity following 50 g oral glucose has been used as an index of beta-cell function. Glucose-stimulated C... | 619,224 | [
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Heparin resistance and decreased hepatic triglyceride hydrolase release during long-term estrogen-progestin treatment. | These studies were undertaken to define the mechanism for the depression of post-heparin triglyceride hydrolase activity in women treated with estrogen-progestin oral contraceptives. Six treated and six control women were studied. Total, protamine-inhibited, and protamine-resistant triglyceride hydrolase activities wer... | 619,226 | [
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... |
Are paranoid schizophrenics biologically different from other schizophrenics? | Two studies were undertaken to verify the presence of lowered platelet monoamine oxidase activity in chronic schizophrenia. In the first study, a retrospective chart analysis, the mean platelet activity of patients with chronic schizophrenia (7.73+/-0.64 nmol of benzylaldehyde product per 10(8) platelets per hour [S.E.... | 619,236 | [
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... |
High concentration of sweat calcium, magnesium and phosphate in chronic renal failure. | Sweat collected from the forearm of chronic renal failure and control patients, after iontophoretic stimulation with pilocarpine, was analyzed for Na, K, Cl, Mg, phosphate and urea. Concentrations of Ca, Mg and phosphate in sweat from chronic renal failure patients were significantly elevated (p less than 0.05) as comp... | 619,298 | [
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Amniotic fluid analysis. Its role in maternal neonatal infection. | Indirect evidence suggests that amnionitis, in the absence of maternal symptoms, contributes to neonatal morbidity. The incidence is unknown because diagnostic techniques are not available. A quantitative amniotic fluid analysis of bacteria, white blood cells, and lactic dehydrogenase levels was performed during labor ... | 619,338 | [
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0.0686469,
-... |
Induction of labor in the high-risk pregnancy with PGF 2 alpha. | The induction of labor in the high-risk patient is accompanied by an increased incidence of cesarean section partly due to failed induction. A series of 50 high-risk patients induced with intravenous prostaglandin F 2 alpha is presented. Forty-five were successfully induced, 35 of whom delivered vaginally. Failed induc... | 619,341 | [
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Endometrial adenocarcinoma and the Stein-Leventhal syndrome. | Six cases of adenocarcinoma of the endometrium associated with the Stein-Leventhal syndrome are presented. The average age of the patients was 27.8 years. All patients were treated surgically; 2 had preoperative intracavitary irradiation, and 1 had postoperative intravaginal cesium-137 application. At follow-up, rangin... | 619,343 | [
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Use of rotation scalp flaps for treatment of occipital baldness. | We have used 25 rotation scalp flaps to treat occipital baldness associated with fronto-parietal baldness (the third flap), and 35 such flaps for the correction of isolated occipital baldness. We have not had any flap necrosis, and our patients have been well satisfied with the results of this surgery. | 619,382 | [
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Reduction mammaplasty: nipple-areola survival on a single breast quadrant. | Nipple viability was retained in 165 breasts undergoing reduction mammaplasty without dermal pedicles--even when 3 quadrants of the breast were excised. This technique adds versatility in shaping the breast and permits resection of the hypertrophied portions of the breast, rather than predetermined segments. It allows ... | 619,383 | [
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Angiographic diagnosis of renal tumors associated with polycystic disease. | Two cases of renal cell carcinoma associated with polycystic disease of the kidney are presented. The literature is reviewed and the angiographic findings are discussed. These cases suggest that angiography is necessary to make the diagnosis of renal tumors associated with renal polycystic disease. | 619,392 | [
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Complementary use of ultrasound and computed tomography in studies of the pancreas and kidney. | 113 cases of pancreatic and renal disease studied by both ultrasound and computed tomography (CT) were analyzed retrospectively. CT provided a diagnosis when pancreatic ultrasound was unsuccessful due to overlying bowel gas or obesity and when renal ultrasound was unsuccessful due to obesity, reverberations from ribs, ... | 619,398 | [
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Spinal cord protection during cross-fire irradiation of the intrathoracic esophagus: tube-tilt vs. Shielding. | The protection of the upper thoracic spine achieved by a tube-tilt technique was found to be comparable to that obtained from direct shielding during cross-fire therapy of the intrathoracic esophagus. An isocentric technique was utilized which included one anterior and two posterior-oblique fields. Significant underdos... | 619,417 | [
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A device for insuring the congruency of opposed irregularly blocked fields. | A device for insuring the congruency of opposed irregularly blocked fields has been developed which permits the treatment of both fields of a parallel opposed pair without the realignment of any field-shaping standard non-divergent blocks. The device is an adaptor which attaches directly to the shadow tray or wedge hol... | 619,426 | [
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On "conservative" estimates of radiation hazards. | The problem of extrapolating radiation hazard risks from high doses to low doses is analyzed in regard to the controversy surrounding mammography in screening women under age 50 for breast cancer. The problem of faulty risk/benefit analysis based on an erroneously high estimate of risk is discussed. The author conclude... | 619,428 | [
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Arterial changes during treatment with intrahepatic arterial infusion of 5-fluorouracil. | Changes in the liver arteries ranging from minimal irregularities in occlusions and development of aneurysms were investigated in 27 patients who received intra-arterial infusion of 5-FU in the hepatic artery. Variations in the arterial caliber peripheral to the hilum of the liver were noted in 13 of the patients. Furt... | 619,435 | [
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Buckled meniscus. | Normal menisci may show transient distortion during knee arthrography. This usually results from intermittent visualization of the meniscus out of direct profile to the x-ray beam. Similar transient distortion may result from actual buckling of an anatomically normal meniscus during stressful maneuvers in young individ... | 619,440 | [
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0.129292... |
Arterial embolization of malignant tumor: report of two cases with angiographic findings. | Two patients with malignant arterial emboli, one from a renal cell carcinoma and the other from a squamous cell carcinoma of the trachea, are described. Both patients had typical radiographic features of emboli on angiography. The origin of such arterial emboli is most probably a chest metastasis involving a pulmonary ... | 619,443 | [
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Hamartoma of the breast: diagnostic observation of 16 cases. | Of 10,000 mammographies done over a 9-year period, 16 cases of hamartoma of the breast were diagnosed. The entity is a well delimited mass composed of dysplastic-appearing mammary tissue admixed to fat. It can be readily recognized and should not be confused with fibroadenoma or mammary dysplasia. The accuracy with whi... | 619,444 | [
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Zinc deficiency in murine milk underlies expression of the lethal milk (lm) mutation. | The inability of nursing pups to survive on milk of mice homozygous for the recessive mutation, lethal milk (lm), is correlated with a reduction in zinc levels of both milk and pup carcass. Administration of zinc to pups nursing on lmlm dams reduces the observed mortality and morbidity. It is suggested that lm alters z... | 619,449 | [
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Maculotoxin: a neurotoxin from the venom glands of the octopus Hapalochlaena maculosa identified as tetrodotoxin. | Maculotoxin, a potent neurotoxin isolated from the posterior salivary glands of the blue-ringed octopus. Hapalochlaena maculosa, has now been identified as tetrodotoxin. This is the first reported case in which tetrodotoxin has been found to occur in a venom. | 619,451 | [
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Memory: modification of anisomycin-induced amnesia by stimulants and depressants. | Mice were trained in a passive (foot shock)avoidance task. When administered after training, the stimulants caffeine or nicotine blocked amnesia for the task that had been produced by injections of the protein synthesis inhibitor anisomycin given prior to training. With foot shock at a higher intensity, anisomycin did ... | 619,461 | [
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Far-ultraviolet stopped-flow circular dichroism. | A stopped-flow circular dichroism instrument, with a total accessible wavelength range of 200 to 750 nanometers, has been constructed and provides a spectroscopic method for kinetic investigations of a wide array of fast reactions in which optical activity changes in absorbing regions are involved. An important biochem... | 619,462 | [
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Silicon identification in prosthesis-associated fibrous capsules. | The use of correlated microscopic techniques, including the scanning electron microscopic modes of backscattered electron imaging and energy dispersive x-ray analysis, aid in defining the process of dispersion of silicon-containing material around silicone rubber (polydimethylsiloxane) prosthetic devices. | 619,466 | [
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Effect of cortisone acetate on effector cells for antibody-mediated cytotoxicity in mouse and rat. | We have looked at the effect of in vivo cortisone acetate treatment on effector cells for antibody-dependent cell-mediated cytotoxicity in mice and rats, using both chicken erythrocytes and the mouse lymphoma cell line AKR.A as target cells, since the AKR.A cell line is susceptible to antibody-dependent cell-mediated c... | 619,483 | [
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Origin and development of the septum primum. | Based on the study of ten hearts of human embryos from the Orts Llorca collection in Madrid, comprising stages 12-17 of O'Rahilly, the origin of the septum primum was analyzed. The septum referred to has its origin in the dorsocaudal part of the common auricle starting from the cells of the lower cushion which makes co... | 619,501 | [
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Observations on the ultrastructure of ganglion cells in the circumvallate papilla of rat and mouse. | Ganglion cells in the circumvallate papilla of adult rodents are described as typical autonomic neurons. Some neurons are aggregated to form a discrete structure in the base of the papilla; others are scattered through the core, along the nerve bundles, and particularly near the dome. The term "circumvallate ganglion" ... | 619,504 | [
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0.0968640... |
Neural tube lesions in the offspring of hamsters given single oral doses of lathyrogens early in gestation. | The lathyrogens aminoacetonitrile, D-penicillamine and semicarbazide were tested for their teratogenicity in hamster on day 7 of gestation at three different dose levels. The results showed that aminoacetonitrile and penicillamine were typical teratogens in hamsters, capable of causing significant embryotoxic effects c... | 619,507 | [
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Local potential gradients as a unifying measure for thresholds of stimulation, standstill, tachyarrhythmia and fibrillation appearing after strong capacitor discharges. | The pattern of arrhythmias following capacitor discharges of increasing amplitude, which have been observed by the authors in cultured myocardial cells from chick embryos, was compared to the arrhythmia patterns caused by similar discharges in experimental animals and humans, as reported in the literature. While the ab... | 619,552 | [
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Relationship between myocardial infarction and preinfarction angina: a histopathological study of coronary arteries in two sudden death cases employing serial section. | Two patients who had previously experienced old myocardial infarction and who died suddenly after an attack of chest pain were examined and discussed. In both cases two of the three main coronary arteries showed severe stenosis with canalization. Ruptured atheromatous plaque was found in the unblocked coronary artery. ... | 619,594 | [
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Food iron absorption in iron deficiency. | The absorption of food iron in relation to the diet was studied in 10 phlebotomized normal young male subjects during 3 to 5 months. The iron absorption was calculated from the net increase of the hemoglobin mass. There was pronounced individual variation in the mean dietary absorption ranging between 1.9 and 5.0 mg. T... | 619,597 | [
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... |
Adipose tissue cellularity in obese school girls before and after dietary treatment. | Mean fat cell size and adipose tissue cellularity were studied in 18 grossly obese girls and 17 age-matched reference girls. The obese girls had a combined hypertrophic-hyperplastic obesity with increments in fat cell size as well as in fat cell number. High insulin levels were found in the obese girls and the levels c... | 619,605 | [
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Giant cell tumor of tendon sheath and pigmented villonodular synovitis: an ultrastructural study. | The ultrastructures of five examples of giant cell tumors of the tendon sheath and one example of pigmented villonodular synovitis were studied. The giant cell tumors were composed mostly of A and B types of synovial cells. Also present were fibroblastic cells with intracytoplasmic filaments with densities (myofibrobla... | 619,614 | [
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A multi-station gravity delivery system. | In May 1974, New York University Hospital began testing an experimental system using gravity for the slow-speed transport of laboratory specimens. This experiment demonstrated that the system was safe and easy to use. Consequently, in February 1975, a second station was installed adjacent to the intensive care unit to ... | 619,615 | [
-0.1497147,
0.2657104,
-0.1513079,
0.1198297,
0.1807899,
-0.2051645,
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0.08230399,
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0.2929572,
0.1419016,
0.0179275,
0.01234193,
0.134069,
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-0.3971716,
-0.2865092,
-0.2906123,
0.2915757,
0.0246421,
-0.03784256,
... |
A three-dimensional study of endometrial mitochondria during the menstrual cycle. | Three-dimensional reconstruction of endometrial mitochondria during the menstrual cycle in the woman has produced three mitochondrial populations. These populations are seen to change in size, in number, and in complexity of structure as the menstrual cycle progresses. Through reconstruction and statistical analysis, m... | 619,655 | [
-0.1899116,
0.08591847,
-0.3049097,
0.2984337,
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0.1545409,
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0.03608624,
0.2097297,
0.238024,
0.1380149,
0.1... |
The effects of dopamine of blood pressure and heart rate of the unanesthetized fetal lamb. | The effects of dopamine on blood pressure and heart rate have been studied in continuously cannulated fetal lambs and adult sheep. Drugs were administered by direct intravenous injection into either the fetus or the adult sheep, and blood pressure was measured from an arterial cannula and heart rate was computed from t... | 619,661 | [
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0.01070774,
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-0.1266195,
-0.2238217... |
Tobramycin levels in human eyes. | Tobramycin, a new aminoglycoside antibiotic, penetrated the aqueous humor of human eyes after parenteral administration, either intramuscularly or intravenously, in 36 cataract patients with a presumably normal blood aqueous barrier. Tobramycin administered subconjunctivally to eyes with a normal blood aqueous barrier ... | 619,679 | [
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0.1705489,
0.296496,... |
Experimental myocardial infarction in the rat: qualitative and quantitative changes during pathologic evolution. | Surgical occlusion of the left coronary artery of the rat is a relatively simple, economical technique for producing experimental myocardial infarction (MI). Histologic study of 1- to 21-day-old MI in rats showed that following a mild and brief acute inflammatory response at the margins of the necrotic myocardium, ther... | 619,696 | [
0.04234186,
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-... |
Hemodynamics of increased intra-abdominal pressure: Interaction with hypovolemia and halothane anesthesia. | The hemodynamic interaction of acute hypovolemia and halothane anesthesia in dogs with increased intra-abdominal pressure caused by intraperitoneal instillation of N2, N2O and CO2 was studied. During normovolemia and just basal pentobarbital anesthesia, the response to increase of intra-abdominal pressure to 40 torr co... | 619,705 | [
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Acetylcholine concentrations and turnover in rat brain structures during anesthesia with halothane, enflurane, and ketamine. | Acetylcholine and choline concentrations in brain structures of rats during anesthesia with halothane (0.7-1.0 per cent inspired), enflurane (2.7-3.0 per cent, inspired) and ketamine (40 mg/kg, iv) were measured by gas chromatography. The turnover rate (biosynthesis) of acetylcholine in vivo was estimated by infusing p... | 619,706 | [
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0.340786,
0.1552683,
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0.1174613,
0... |
Spirometric changes in normal children with upper respiratory infections. | Recent evidence that certain uncomplicated upper respiratory infections induce pulmonary function abnormalities in adults prompted a prospective study in children, in whom such infections occur more frequently. In a longitudinal study, 55 children 2.5 to 11 years of age were observed for a mean duration of 2 years. Spi... | 619,724 | [
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0.02406948,
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0.1056814,
0.1216586,
-0.01866842,
-0.1679... |
Epidermotropically metastatic malignant melanoma. Differentiating malignant melanoma metastatic to the epidermis from malignant melanoma primary in the epidermis. | In four instances, metastases to epidermis from primary cutaneous malignant melanomas at different sites showed histological features similar to those of cutaneous malignant melanoma primary in the epidermis. In these metastases, atypical melanocytes were present within the epidermis and in the upper part of the dermis... | 619,785 | [
-0.04654713,
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-0.2796459,
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-0.3519669,
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0.3723243,
0.08632426,
-0.03751415,
... |
Massive pulmonary hemorrhage: surgical approach as choice of treatment. | Massive pulmonary hemorrhage is still a life-threatening problem with high mortality. The surgical versus medical approach to this condition was compared in 146 patients who were treated over a ten-year period. Our evidence shows that early operation is the only choice of treatment. | 619,806 | [
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0.1090384,
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0.4013157,
0.1745233,
-0.03312818,
... |
Epicardial atrial pacing. | A modification of the technique for placing a permanent epicardial electrode to the atrium is described. It results in long-term atrial pacing and low sensing thresholds. The method requires meticulous surgical technique but is reliable, safe, and free from serious or long-term complications. | 619,814 | [
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0.02656423,
-0.2221766,
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0.1215189,
0.06051091,
-0.0003737... |
Cecal necrosis after open-heart operation. | Two patients with isolated transmural ischemic necrosis of the cecum after cardiopulmonary bypass are discussed. Superimposed upon the multiple cardiovascular abnormalities in these patients, cardiopulmonary bypass adds another risk factor for nonocclusive intestinal infarction. In patients undergoing open-heart proced... | 619,815 | [
-0.3247597,
0.1496489,
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-0.3823942,
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0.04550315,
0.1520727,
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0.2883134,
0.1689342,
-0.05891016... |
A university medical center occupational health service: shoes for the cobbler's children. | A university medical teaching center can provide adequate health care for its employees by using the medical manpower and facilities it already possesses. Certain elements are of prime importance in the success of the development of such a service: (1) organization--concise knowledge of objectives, cost, and benefits, ... | 619,833 | [
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0.1332617,
0.203753,
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0.09048253,
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-0.1634039,
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-0.4089931,
-0.08191512,
0.6706109,
0.2045899,
0.06541045... |
Sensory nerve conduction velocity in children using cerebral evoked potentials. | Sensory nerve conduction velocity was measured in 16 healthy volunteers from 3 to 16 years of age by using evoked cortical potentials. Using the latencies to the peaks of the 2nd and 3rd components (N1 and P2) of the average evoked response, conduction velocities for the wrist-to-elbow segment of the median nerve were ... | 619,845 | [
-0.2032401,
0.1269616,
-0.1988779,
-0.5251989,
0.09493706,
-0.3448071,
-0.5219662,
0.06363056,
-0.07924266,
0.1185571,
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-0.2079675,
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-0.04439263,
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-0.2883228,
0.03865056,
-0.3920674,
0.009939627,
0.342645,
-0.06149163,
0.25738... |
Urinary output and incidence of acute urinary tract infection in patients with indwelling bladder catheters. | This study was designed to test the hypothesis that high urinary output in patients with an indwelling bladder catheter tends to protect the patients from acute urinary tract infection. Thirty-five cases of acute spinal cord injury were analyzed for average daily urine volume and frequency of acute urinary infection (d... | 619,846 | [
0.07771853,
0.03394384,
-0.2662321,
0.2335933,
-0.01491085,
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-0.2026207,
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0.00800398,
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0.1263553,
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0.1113559,
0.07545593,
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-0.3934428,
0.1366336,
0.1366411,
0.2314226,
... |
Intermittent catheterization to obtain catheter-free bladder function in spinal cord injury. | The intermittent bladder catheterization technique has been proposed as an effective way of eliminating the need for an inlying. Foley catheter in patients with neurovesical dysfunction following spinal cord injury. In the study reported here, a group of 41 male patients with spinal cord injuries achieved a catheter-fr... | 619,852 | [
-0.2111345,
0.009126289,
-0.2539001,
-0.000142788,
0.08522412,
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0.4033901,
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0.1306256,
-0.2317141,
-0.07257074,
0.4460327,
-0.1739508,
0.17311... |
Psychological factors in the face-hand test. | Young children's failure to report double-simultaneous stimulations of the side of the face and the contralateral hand has been attributed to cerebral deficiencies. When tested under optimal psychological conditions, 3- to 6-year-old children correctly report simultaneous stimulations of the face and contralateral hand... | 619,872 | [
0.00494821,
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0.3373367,
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-0.1059239,
0.0700495,
-0.4398946,
0.2334866,
0.1852265,
0.05737089,
-0.086696... |
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