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Davis VA, Schwartz L. Electromagnetic propagation in close-packed disordered suspensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 31:5155-5165. [PMID: 9936475 DOI: 10.1103/physrevb.31.5155] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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252
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Brown RI, Aldridge HE, Schwartz L, Henderson M, Brooks E, Coutanche M. The use of dextran-40 during percutaneous transluminal coronary angioplasty: a report of three cases of anaphylactoid reactions--one near fatal. CATHETERIZATION AND CARDIOVASCULAR DIAGNOSIS 1985; 11:591-5. [PMID: 2418979 DOI: 10.1002/ccd.1810110607] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Successful percutaneous transluminal coronary angioplasty is achieved by fracture of the atheromatous plaque and perhaps dilatation of the arterial walls to increase the luminal diameter of the artery. Because this "controlled" injury stimulates platelet adhesion on the subendothelial matrix, the use of dextran-40 in addition to heparin has been advocated. The overall incidence of Dextran-induced anaphylactoid reactions at our institution was 0.6% and of severe life-threatening reactions, 0.2%. With the recent doubts cast on the efficacy of dextran-40, the question arises regarding its routine use in PTCA.
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253
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Schwartz L, Colson M, Glynn M, Azuma J, Scully HE, Butany J. Thrombosis of a prosthetic valve managed by thrombolysis: a case report. Can J Surg 1985; 28:34-6, 38. [PMID: 3971220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Thrombosis of a prosthetic valve is one of the most serious cardiovascular events. Emergency replacement of the prosthetic valve has been the standard method of management but carries a high operative risk. This paper describes the successful use of streptokinase, given intravenously, to manage a patient with this complication in the acute phase. Eventually, operation was necessary because the presence of residual organized clot was suspected, but the procedure was performed electively 10 days later.
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254
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Sackmann-Muriel F, Diez B, Schvartzman E, Braier JL, Schwartz L, Gallo G, Pavlovsky S. Comparison of two consecutive trials for treatment of childhood non-Hodgkin's lymphoma. Cancer 1984; 54:2863-8. [PMID: 6388820 DOI: 10.1002/1097-0142(19841215)54:12<2863::aid-cncr2820541209>3.0.co;2-f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Two consecutive trials for the treatment of childhood non-Hodgkin's lymphoma were evaluated, carried out by the same cooperative groups. Group A: From June, 1973 to December, 1975, 50 evaluable patients under 16 years of age participated in a study that included vincristine and prednisone plus surgery and/or radiotherapy as induction. This was followed by 2400 rad of cranial radiotherapy plus 5 doses of intrathecal methotrexate-dexamethasone and anti-leukemia (6-mercaptopurine, methotrexate, cyclophosphamide) or anti-lymphoma (cyclophosphamide, vincristine, procarbazine, and prednisone) maintenance treatment. Group B: From January, 1976 to December, 1980, 55 evaluable patients participated in a consecutive study that added Adriamycin (doxorubicin) and cyclophosphamide to the former induction regimen. Central nervous system (CNS) prevention was performed with 5 doses of intrathecal methotrexate-dexamethasone. Maintenance treatment was the same. Prognostic factors as stage and primary site were comparable in both groups. A total of 33 (66%) of 50 children of Group A and 48 (87%) of 55 children of Group B achieved complete remission (P less than 0.005). Disease-free survival at 60 months was 27% in Group A and 49% in Group B; for Stage I-II, 30% in Group A and 85% in Group B (P less than 0.025); for Stage III-IV 28% in Group A and 36% in Group B (not significant). In Group A, 9.1% and in Group B, 8.3% had primary CNS relapse. Both maintenance schedules had the same relapse rate. It was concluded that: (1) the addition of Adriamycin and cyclophosphamide to vincristine-prednisone in Group B produces a higher rate of complete remission in Stage III-IV, a higher rate of disease-free survival in Stage I-II, and a higher survival rate in all stages; (2) CNS prevention with intrathecal methotrexate-dexamethasone is equally effective as cranial radiation plus intrathecal methotrexate-dexamethasone; and (3) anti-leukemia and anti-lymphoma maintenance are equally effective in the context of this study.
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Marquis JF, Schwartz L, Aldridge H, Majid P, Henderson M, Matushinsky E. Acute coronary artery occlusion during percutaneous transluminal coronary angioplasty treated by redilation of the occluded segment. J Am Coll Cardiol 1984; 4:1268-71. [PMID: 6238989 DOI: 10.1016/s0735-1097(84)80148-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Acute occlusion of a coronary artery during percutaneous coronary angioplasty usually results in unremitting ischemia requiring emergency surgical intervention. Seven patients are described, in whom complete occlusion occurred during coronary angioplasty as a result of coronary artery dissection. Despite this, it was possible to reintroduce the balloon catheter immediately and redilate the vessel with abrupt reversal of clinical and electrocardiographic manifestations of ischemia. Six patients had no subsequent evidence of myocardial infarction. The seventh had a slight elevation of serum creatine kinase and transient electrocardiographic changes. All patients were discharged from the hospital without further intervention. Four patients had elective coronary artery bypass surgery (greater than 4 weeks after angioplasty) and three have remained asymptomatic or in improved condition since the coronary angioplasty. It is concluded that sudden occlusion of a coronary artery during coronary angioplasty can be safely treated by redilation in the acute stage.
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257
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Flamant F, Schwartz L, Delons E, Caillaud JM, Hartmann O, Lemerle J. Nonseminomatous malignant germ cell tumors in children. Multidrug therapy in Stages III and IV. Cancer 1984; 54:1687-91. [PMID: 6089996 DOI: 10.1002/1097-0142(19841015)54:8<1687::aid-cncr2820540833>3.0.co;2-u] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Thirty-five children with Stage III and IV nonseminomatous malignant germ cell tumors were treated, between June 1, 1977 and December 31, 1982, at Institut Gustave-Roussy, Villejuif, France, and Hospital General de Ninos, Buenos-Aires, Argentina: 11 sacrococcygeal, 12 ovarian, 6 testicular, 5 intrathoracic, and 1 intrabdominal site. All of them had yolk sac component with high level of AFP, seven had also elevated level of HCG. Thirteen patients had primary chemotherapy, 18 received chemotherapy after incomplete surgical excision, and 4 patients with testicular Stage III tumors had chemotherapy immediately following retroperitoneal lymphadenectomy after orchiectomy, because of persistently elevated AFP levels. The chemotherapy regimen for 1 year's duration, repeated every 21 days, and consisted of 6 courses of dactinomycin-Cytoxan (cyclophosphamide) D1 to D5 and vincristine, Adriamycin (doxorubicin) D21, bleomycin D23, and cisplatin D24. Only three patients received complementary radiotherapy. The toxicity of the chemotherapy regimen was severe, but only one death was due to the therapy (pulmonary fibrosis with bleomycin). The number of surviving patients without evidence of disease was 12 of 16 for Stage III and 12 of 19 for Stage IV. The 25-month survival rate was 63% with a follow-up of 11 months to 5.5 years (median, 22 months). This constitutes a dramatic improvement when compared with the survival rate of 21% of 48 similar patients treated at Institut Gustave-Roussy between 1968 and 1977 with surgery, radiotherapy, and chemotherapy (methotrexate, dactinomycin, and Cytoxan).
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258
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Shapira YA, Patz D, Menczel J, Schwartz L, Meyer S, Frutkoff IW, Kidroni G. Low serum 24,25 dihydroxyvitamin D in Duchenne muscular dystrophy. Neurology 1984; 34:1192-6. [PMID: 6611522 DOI: 10.1212/wnl.34.9.1192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Levels of serum 24,25(OH)2D3 (0.69 +/- 0.17 ng/ml) were lower in DMD patients than in age-matched controls (2.13 +/- 0.15 ng/ml). Circulating levels of 1,25(OH)2D3 and 25(OH)D3 were within the accepted normal range. Bearing in mind the proposed pathophysiologic role of calcium in DMD and the influence of vitamin D metabolites on muscle ATP and protein synthesis, as well as on sarcoplasmic reticulum calcium transport and muscle mitochondrial calcium content, the above findings of low or deficient 24,25(OH)2D3 levels in DMD could be meaningful from the etiologic and therapeutic points of view.
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259
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Gordon DJ, Probstfield JL, Rubenstein C, Bremner WF, Leon AS, Karon JM, Third J, Bryan H, Schwartz L, Insull W. Coronary risk factors and exercise test performance in asymptomatic hypercholesterolemic men: application of proportional hazards analysis. Am J Epidemiol 1984; 120:210-24. [PMID: 6465119 DOI: 10.1093/oxfordjournals.aje.a113883] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The association of established coronary risk factors with submaximal graded treadmill exercise test performance was examined in 6,850 asymptomatic, white 34--59-year-old hypercholesterolemic men screened between 1973 and 1976 at 12 North American Lipid Research Clinics for participation in their Coronary Primary Prevention Trial. The prevalence of ischemic electrocardiographic responses (greater than or equal to 1 mm S-T segment depression) was 8.6%. The Cox proportional hazards method was adapted so as to take into account the level of exercise at which ischemic responses occurred and to which subjects without ischemic responses were exposed. The results were compared with those obtained by standard logistic regression. In both models, age, blood pressure, plasma cholesterol, and (inversely) plasma high-density lipoprotein cholesterol and alcohol consumption were significant independent predictors of an ischemic response to exercise. Surprisingly, ischemic responses were less frequent in smokers than in nonsmokers. However, when the proportional hazards method was used, cigarette smoking was weakly but significantly (p less than 0.01) predictive of an ischemic response on the treadmill. Results from this model differed from those of the logistic model because the former takes into account the reduced exercise capacity of smokers, which renders them less likely to reach workloads sufficient to induce myocardial ischemia. The proportional hazards model similarly demonstrated a possible beneficial effect of habitual physical activity which was not apparent in the logistic model. Quetelet index and plasma triglyceride were only weakly associated with the probability of an ischemic response, and did not contribute significantly to either model.
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Abstract
Seventeen diabetic subjects requiring insulin and who exhibited glycemic stability over a 9-12-mo control period received 5 g of pectin with each meal and at bedtime for 3 mo. Hemoglobin A1c (HbA1c) and glycosylated serum protein were measured in each patient on multiple occasions to assess glycemic control. No clear-cut change in these measurements occurred during the period of pectin ingestion. These data are not consistent with a beneficial effect of high-pectin diets in people with diabetes.
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261
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Yellin A, Schwartz L, Hersho E, Lieberman Y. Chondrosarcoma of the bronchus. Chest 1983; 84:224-6. [PMID: 6872606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A primary chondrosarcoma of the right main bronchus was removed by pneumonectomy in a 74-year-old woman. The presenting symptoms were dyspnea and cough with a lung mass evident for 18 months. She is well and free of tumor 16 months later. Only eight established cases of primary chondrosarcoma arising from the lung, and four originating from the tracheobronchial tree have been previously described. The long preoperative history and the outcome so far confirm the relatively less aggressive character of the tracheobronchial as compared to the lung subdivision of primary pulmonary chondrosarcoma.
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262
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Bentivegna S, Schwartz L, Deschner D. The use of art with an autistic child in residential care. AMERICAN JOURNAL OF ART THERAPY 1983; 22:51-6. [PMID: 10318567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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263
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Roy J, Gazis D, Shakman R, Schwartz L. Biofunctional evaluation of a hydrogen bond stabilizing the conformation in the cyclic part of oxytocin. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1982; 20:35-42. [PMID: 7118427 DOI: 10.1111/j.1399-3011.1982.tb02649.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
[5-beta-Malamidic acid]oxytocin was synthesized to study the importance of the hydrogen bond between the C=O of Tyr2 and the peptide N-H of Asn5 for the stabilization of a biologically functional conformation of oxytocin. This analog lacks the peptide N-H at residue 5 required for the formation of a hydrogen bond with the C-O of Tyr2. [5-beta-Malamidic acid] oxytocin exhibited 45.1 +/- 2.5 U/mg and 65.6 +/- 5.9 U/mg of uterotonic activity, in vitro, in the absence and in the presence, respectively, of Mg2+, 147 +/- 14 U/mg of uterotonic activity in vivo, 203 +/- 13 U/mg of milk-ejecting activity, 0.37 +/- 0.03 U/mg of pressor activity and 0.32 +/- 0.29 U/mg of antidiuretic activity. It is concluded that devoid of the hydrogen bond under question, an oxytocin-like peptide can still assume the conformation needed to interact with the oxytocin receptors.
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264
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Eastman JR, Raibley S, Schwartz L. Trabecular bone patterns in dental radiographs: a further aid to dentists involved in forensic dentistry. ILLINOIS DENTAL JOURNAL 1982; 51:161-3. [PMID: 6957392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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265
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266
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Ron M, Kidroni G, Schwartz L, Scherer D, Menczel J, Palti Z. Amniotic fluid levels of 25-hydroxyvitamin D3 and 24,25-dihydroxyvitamin D3. Am J Obstet Gynecol 1982; 142:113-4. [PMID: 6976757 DOI: 10.1016/s0002-9378(16)32295-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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267
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Schwartz L. Involuntary admission--a century of experience. J Clin Psychiatry 1982; 43:28-32. [PMID: 7054153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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268
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Schwartz L, Aldridge HE, Szarga C, Cseplo RM. Percutaneous transluminal angioplasty of an anomalous left circumflex coronary artery arising from the right sinus of Valsalva. CATHETERIZATION AND CARDIOVASCULAR DIAGNOSIS 1982; 8:623-7. [PMID: 6217896 DOI: 10.1002/ccd.1810080613] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This case report describes a patient with isolated stenosis of an anomalous circumflex artery with evidence of left ventricular lateral wall ischaemia. Percutaneous dilatation of this vessel was successfully performed and was facilitated by removing the tip of a standard guiding catheter permitting selective cannulation of the anomalous ostium. Similar innovations in the standard angioplasty technique may permit its application in other unusual anatomical situations.
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269
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Bier J, Schwartz L, Koppenhagen K. [Tumor scintigraphy of patients with malignant tumors in the head and neck area]. DEUTSCHE ZAHNARZTLICHE ZEITSCHRIFT 1981; 36:752-754. [PMID: 6273114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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270
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Sackmann-Muriel F, Bonesana AC, Pavlovsky S, Papendieck C, Morgenfeld M, Penchansky L, Schwartz L, Kvicala R, Sica M, Ojeda F. Hodgkin's disease in childhood: therapy results in Argentina. THE AMERICAN JOURNAL OF PEDIATRIC HEMATOLOGY/ONCOLOGY 1981; 3:247-254. [PMID: 7025683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
From 1940 to 1977, a total of 152 children aged 15 years or less with the histologic diagnosis of Hodgkin's disease were treated in Argentina. For analysis, these patients were placed into three periods which displayed the most outstanding changes in diagnostic workup and therapy. The periods are as follows: (1) 1940 to 1966 (43 children), (2) 1967 to 1972 (35 children), and (3) 1973 to 1977 (74 children). The patients were treated with extended field radiation therapy and followed by courses of cyclophosphamide-vinblastine-procarbazine-prednisone, with CCNU added (CCVPP) or not added (CVPP) in a randomized trial. The mean age of the whole group was 7.5 years (range 2 to 15 years) and there was a predominance of males (79%). Crude 6-year survival for the three periods were as follows: 1940 to 1966, 34%; 1967 to 1972, 50%; and 1973 to 1977, 79%. We conclude that (1) survival of Hodgkin's disease of childhood has shown a rather marked improvement during the last decade and this progress is probably due to the use of combined multidrug chemotherapy administered under collaborative controlled clinical trials; (2) preliminary evaluation of the results of CVPP and CCVPP therapy shows that the latter combination (CCVPP) neither increases the percent of patients achieving complete remission nor prolongs relapse-survival in Hodgkin's disease of childhood: and (3) all stages of childhood Hodgkin's disease can be successfully managed with multidrug chemotherapy alone.
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271
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Huisman L, Schwartz L, Bansil A. CALCULATIONS OF ELECTRONIC STATES IN THE MUFFIN TIN MODEL OF A LIQUID METAL. ACTA ACUST UNITED AC 1980. [DOI: 10.1051/jphyscol:19808110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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272
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Von Hofen D, Auble TE, Schwartz L. AEROBIC REQUIREMENTS FOR PUMPING VERSUS CARRYING .91 KG HANDWEIGHTS WHILE RUNNING. Med Sci Sports Exerc 1980. [DOI: 10.1249/00005768-198004001-00038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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273
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Schwartz L, Scully HE, Silver MD, Azuma J, Wigle ED. Clinicopathological correlations in patients who received an isolated model 104 Beall mitral valve. Can J Surg 1980; 23:117-20. [PMID: 7363171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Following reports of accelerated wear in the model 104 Beall prosthetic valve, the authors initiated a recall and prospective follow-up study of patients who received Beall valves. In the 3 years of the follow-up program, 12 patients who had an isolated Beall mitral valve implanted have had elective replacement of the prosthesis. Cinefluoroscopy was the most accurate preoperative method of predicting the degree of pathologic wear. The serum lactic dehydrogenase value was the next most helpful measurement. Change in functional class, mitral regurgitation murmur, hemodynamic status, echocardiography and the duration of the valve in situ were not sensitive indicators.
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274
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Sole MJ, Drobac M, Schwartz L, Hussain MN, Vaughan-Neil EF. The extraction of circulating catecholamines by the lungs in normal man and in patients with pulmonary hypertension. Circulation 1979; 60:160-3. [PMID: 445719 DOI: 10.1161/01.cir.60.1.160] [Citation(s) in RCA: 87] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We directly measured the net pulmonary extraction of circulating norepinephrine, epinephrine and dopamine in control patients and patients with primary or secondary pulmonary hypertension. Mixed pulmonary artery norepinephrine, epinephrine and dopamine were 314 +/- 13 pg/ml, 102 +/- 9 pg/ml, 51 +/- 5 pg/ml, respectively, for the control group; values were similar in patients with pulmonary hypertension. The pulmonary extraction of norepinephrine was 25.4 +/- 2.6% (clearance 266 +/- 62 ng/min) in control patients; epinephrine and dopamine were not extracted. There was no net extraction or production of any of the three catecholamines by the lungs in any of the patients with pulmonary hypertension. We conclude that the lungs play a significant role in the inactivation of circulating norepinephrine in man. This metabolic function of the lungs appear to be lost in pulmonary hypertension.
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275
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276
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Drobac M, Schwartz L, Scully HE, Bentley-Taylor MM. Giant left atrial V-waves in post-myocardial infarction ventricular septal defect. Ann Thorac Surg 1979; 27:347-9. [PMID: 454003 DOI: 10.1016/s0003-4975(10)63313-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A 54-year-old man developed a post-myocardial infarction ventricular septal defect with a 4:1 shunt. The first cardiac catheterization showed left atrial V-waves of 70 mm Hg. Assessment of the presence or absence of mitral regurgitation was not possible because of ventricular irritability and rapid runoff from left ventricle to right ventricle. At the second catheterization two months later, the left atrial V-waves had fallen to 34 mm Hg. The absence of mitral regurgitation was shown by observing the time difference in appearance of indocyanine green in the right ventricle and the left atrium after left ventricular injection. The defect was repaired by right ventriculotomy with subsequent normalization of left atrial V-waves. This case shows that very large left atrial V-waves may occur in postinfarction ventricular septal defects without mitral regurgitation and that these V-waves may decrease with time, probably reflecting increased left atrial compliance.
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277
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Rosen H, Cohen LB, Schwartz L, Digiacomo JN. Response of patients to participation in psychiatry board examinations. Am J Psychiatry 1979; 136:330-2. [PMID: 420332 DOI: 10.1176/ajp.136.3.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The patient who volunteers to be a subject for Part II of the certifying examination in psychiatry and neurology is an indispensable but surprisingly invisible participant in a highly controversial process. A survey of the attitudes of 78 patients toward this experience revealed that although they experienced a significant degree of stress, the overwhelming majority viewed their participation in strongly positive terms. The patient's loyalty to the host institution and the manner in which the patient is prepared for the experience appear to be the major factors in determining a positive outcome.
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278
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Schwartz L, Sole MJ, Vaughan-Neil EF, Hussain NM. Catecholamines in coronary sinus and peripheral plasma during pacing-induced angina in man. Circulation 1979; 59:37-43. [PMID: 758122 DOI: 10.1161/01.cir.59.1.37] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We measured aortic and coronary sinus dopamine (DA), epinephrine (E), and norepinephrine (NE) in eight patients with cardiac ischemia (I) and eight control subjects (C). Samples were taken at rest (73 +/- 3 beats/min in C and 68 +/- 3 beats/min in I) and during coronary sinus pacing to peak rates (144 +/- 4 beats/min in C and 136 +/- 6 beats/min in I). Arterial NE was higher in the ischemic patients at rest (254 +/- 25 pg/ml in C and 324 +/- 21 in I; p less than 0.05). There were no differences in arterial E and DA. Neither pacing nor angina affected peripheral catecholamine concentrations. Resting myocardial NE flux was similar for both groups. With pacing, coronary sinus flow and net myocardial NE release increased significantly in both groups. The maximum relative increase in net myocardial NE release was less in the ischemic patients than in the controls (575 +/- 145% in C and 255 +/- 40% in I; p less than 0.05). Thus, angina induced by pacing does not augment peripheral sympathetic activity. Furthermore, pacing-induced angina appears to be associated with a decrease in cardiac sympathetic tone compared with that found in paced controls.
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279
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Abstract
With the growing number of hospitals developing in-house preventive maintenance capabilities, and the increasing number of pieces of equipment and instruments needing preventive maintenance, automatic data processing has emerged as a tool to aid the clinical engineer and hospital in planning preventive maintenance programs. Such a system is CAPMS, or Computer Assisted Preventive Maintenance System. Through the use of CAPMS, the department in charge of Preventive Maintenance can keep accurate records of PM history, safety testing, and year-to-year maintenance costs. Some of the special features of CAPMS include: information of availability of equipment for servicing, priorities, and a text file that can be used to print out the procedure form for use during the PM. These additional features make CAPMS a useful tool to the clinical engineer.
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280
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Brown P, Schwartz L. Exercise tests and ST changes. Circulation 1978; 58:757. [PMID: 688586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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281
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Schwartz L. The patient history: an outline for collection. OCCUPATIONAL HEALTH NURSING 1978; 26:17-20. [PMID: 249902 DOI: 10.1177/216507997802601004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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282
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MacGregor DC, Covvey HD, Wilson GJ, Schwartz L, Scully HE, Wigle ED. Computer-assisted reporting system for the follow-up of patients with prosthetic heart valves. Am J Cardiol 1978; 42:444-52. [PMID: 685854 DOI: 10.1016/0002-9149(78)90939-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The implantation of large numbers of prosthetic heart valves carries with it the responsibility for continual reassessment of all aspects of patient management. Experience with more than 2,000 prosthetic valve operations since 1963 led to the development of a comprehensive computer-assisted data collection, management and reporting system. Over a 5 year period, data forms were developed for the detailed documentation of preoperative, intraoperative and postoperative information. These were designed in the form of checklists suitable for direct computer entry with use of mark-sense document readers. Special emphasis was placed on preoperative assessment of ventricular function, valve selection, intraoperative myocardial preservation, postoperative rehabilitation and prosthetic valve-related complications. This system makes possible rapid computer generation of a variety of reports to the referring physician regarding the individual patient and to the clinical investigator in relation to patient group statistics. Also, questionnaires to patients of physicians, or both, to update patient data can be produced by the computer at appropriate intervals after valve surgery. Experience indicated that a computer-assisted methodology is the only practical way to provide adequate follow-up of large groups of patients. Additionally direct access to relevant information helps to create an environment in which essential research can be carried out in the face of a demanding clinical practice.
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283
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Abstract
Ten global aphasics and eight brain-damaged non-aphasics were given a test of sign comprehension. The test contained natural, animal and human signs. Subjects were matched for etiology, age and residual intellectual functioning. The global aphasics scored significantly lower than the nonaphasics on the test of sign comprehension, indicating that global aphasia might be reconsidered as a disorder of sign comprehension.
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Metz HS, Schwartz L. The treatment of A and V patterns by monocular surgery. ARCHIVES OF OPHTHALMOLOGY (CHICAGO, ILL. : 1960) 1977; 95:251-3. [PMID: 836210 DOI: 10.1001/archopht.1977.04450020052010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Eleven patients with "A" or "V" pattern strabismus and the absence of notable oblique muscles overactions, were operated on, using the technique of monocular vertical displacement of the horizontal rectus muscles. The average correction of the A or V pattern was 16.5 delta. Subjective torsional complaints were not reported by any of the patients. Torsion was measured postoperatively with the Maddox rod, Maddox wing, and amblyoscope. The average torsional measurement, at least one month postoperatively, was 1.6 degrees with a range of 0 degrees to 7 degrees. It was concluded that monocular vertical displacement of the horizontal rectus muscles can result in satisfactory correction of the A or V pattern and produces no substantial postoperative torsional symptoms or substantial measured torsion at both distance and near fixation.
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285
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Schwartz L, Vaughan-Neil E. Comparison of the performance of pigtail catheters with different number of sideholes. CATHETERIZATION AND CARDIOVASCULAR DIAGNOSIS 1977; 3:421-4. [PMID: 603910 DOI: 10.1002/ccd.1810030413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The standard 12 sidehole pigtail catheter is compared with pigtail catheters with 6, 8, and 10 sideholes in 40 patient studies. The catheter with fewer sideholes performed as well as the standard catheter with respect to the quality of left ventricular opacification, lack of catheter recoil during angiography, and absence of complications. An in vitro study confirmed that better flushing of the terminal segment beyond the sideholes is achieved with the 6 sidehole catheter compared to the 12 sidehole catheter. It is anticipated that this feature will decrease the risk of thromboembolism associated with the use of the pigtail catheter.
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286
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Alexander CS, Schwartz L, Wigle ED, Sample KA. Reversibility of alcoholic cardiomyopathy. III. Role of pericardial effusion. Am J Cardiol 1976; 38:674. [PMID: 983968 DOI: 10.1016/s0002-9149(76)80040-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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287
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Oakley CM, Schwartz L, Wigle ED, Sample KA. Reversibility of alcoholic cardiomyopathy. II. Role of atrial fibrillation. Am J Cardiol 1976; 38:673-4. [PMID: 983967 DOI: 10.1016/s0002-9149(76)80038-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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288
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Swartz MH, Schwartz L. Reversibility of alcoholic cardiomyopathy. I. Role of sarcoplasmic reticulum. Am J Cardiol 1976; 38:673. [PMID: 983966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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289
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Schwartz L, Kieff JS, Winer JA. Group experience for nonpatient undergraduates with difficulties in making decisions. JOURNAL OF THE AMERICAN COLLEGE HEALTH ASSOCIATION 1976; 24:195-7. [PMID: 932327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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290
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Klinge V, Rodziewica T, Schwartz L. Comparison of the WISC and WISC-R on a psychiatric adolescent impatient sample. JOURNAL OF ABNORMAL CHILD PSYCHOLOGY 1976; 4:73-81. [PMID: 1270700 DOI: 10.1007/bf00917606] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The present study compared the WISC and WISC-R on a group of psychiatric adolescent inpatients. The results indicated high intercorrelationss between the two test versions but with the correlation linearly related to the changes in content and administration rules of the WISC-R. Analyses of variance indicated that, on the basis of the Full Scale IQ, the WISC is an "easier" test than the WISC-R.
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291
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Abstract
In a chronic alcoholic with a severe congestive cardiomyopathy the angiographic and hemodynamic evidence of left ventricular dysfunction was completely reversed after 1 year of abstinence. At the time of initial presentation two of the traditional hallmarks of a poor prognosis were present, namely, a long exposure to alcohol before the onset of symptoms and severe diffuse left ventricular dilation and hypokinesis (ejection fraction 14.9 percent). Yet, today, 18 months later he is asymptomatic, receiving no medications and has normal left ventricular function. A reexamination of prognostic factors in alcoholic cardiomyopathy may be indicated.
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292
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Schwartz L, Trabattoni AJ, Cebrian de Bonesana A, Becu L. [Tumors in childhood]. Medicina (B Aires) 1975; 35:237-44. [PMID: 1177742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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293
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Bach MC, Lewin EB, Sheaff ET, Schwartz L, DeBakey ME. Localization of endovascular infection by selective catheterization with serial cultures. J Thorac Cardiovasc Surg 1975; 69:377-81. [PMID: 804076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pseudomonas infection developed at the suture line of an aortic graft in a patient 13 years after the operation. The site of the infection was localized by quantitative blood cultures taken with the aid of selective arterial catheterization. This technique may be of great help in localizing the source of endovascular infection in difficult cases.
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294
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Brieux de Salum S, Larripa I, Schwartz L, Bachmann AE. [Murine cell line from an anaplastic sarcoma]. Medicina (B Aires) 1975; 35:37-42. [PMID: 1128211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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295
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Abstract
The role of a broad range of life events, especially those viewed as stressful, in the genesis of somatic illnesses or psychiatric disturbances is a subject of considerable interest. Recently attempts have been made to develop quantitative measures of life events and to explore the relationship between the ‘amount’ of life events and/or stress and illness in a general population (Rahe et al., 1968; Rahe et al., 1970): for example, The Social Readjustment Rating Questionnaire (SRRQ) (Holmes and Rahe, 1967). In the development of this scale a list of 43 life events was presented to a sample of 394 subjects. Marriage was arbitrarily assigned a value of 500, and the subjects were asked to compare the amount of relative readjustment they would anticipate from the other events. Means and item rankings (Masuda and Holmes, 1967) have been reported to be relatively consistent in groups of different age, sex, marital status, education, social class, generation American, religion, race and cultural background (Holmes and Rahe, 1967). These findings have been found reliable with patients on our unit and in a group of medical students (Mendels and Weinstein, 1972). Paykel et al. (1971) performed a study of weightings of a list of life events and obtained weights which were highly significantly correlated for the 14 items that were identical to those found on the SRRQ. They tested a mixed group of psychiatric patients and found that in general those events defined as ‘exits’ were scaled high, whereas events defined as ‘entrances’ had lower values.
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296
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Morch J, Morton B, McLaughlin P, Betriu A, Aldridge H, Schwartz L, Adelman A, Wigle D, McLoughlin M, Goldman B, Key J, Bigelow W, Trimble A. Late results of aortocoronary bypass grafts in 100 patients with stable angina pectoris. CANADIAN MEDICAL ASSOCIATION JOURNAL 1974; 111:529-32. [PMID: 4547241 PMCID: PMC1947801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
From March 1969 to December 1972, 314 patients underwent elective aortocoronary saphenous vein bypass graft surgery at the Toronto General Hospital for the relief of stable disabling angina refractory to medical management. Inhospital mortality was 2.5%. Of these patients 100 agreed to return for follow-up hemodynamic and angiographic assessment at a mean interval of 19.7 months after operation. Seventy-four percent of patients were asymptomatic or had angina only with strenuous exertion at the time of follow-up. Seventy-five percent of the 142 grafts were patent, though a few had significant narrowings. Clinical improvement could be correlated with successful myocardial revascularization. Myocardial infarction was diagnosed by the presence of new Q waves after operation in 15% of patients. Many of these patients had patent grafts at follow-up and all were improved. Dyslipoproteinemia was not found to be a factor affecting late graft patency. Total left ventricular function was not shown to be improved by segmental revascularization. The trend toward improved survival in the intervening period for the total operated group is encouraging.
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297
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Schwartz L, Nemeroff S, Reiss M. An Investigation of Writing Therapy for the Adult Aphasic: The World Level. Cortex 1974; 10:278-83. [PMID: 16295101 DOI: 10.1016/s0010-9452(74)80020-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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298
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Trimble AS, Gunstensen J, Silver MD, Aldridge HE, Schwartz L, Morch JE. Aortic valve replacement with fascia lata. An encouraging late study. J Thorac Cardiovasc Surg 1974; 68:219-25. [PMID: 4842582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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299
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Humphrey EW, Lindsay WG, Murphy WR, Schwartz L. Determinants in the measurement of pulmonary extravascular water. BULLETIN DE LA SOCIETE INTERNATIONALE DE CHIRURGIE 1974; 33:132-41. [PMID: 4602777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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300
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