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Biomedical subjects

L Schwartz

Publications and source records attributed to L Schwartz.

At least 217 records · Page 12Linked to original sources
PubMed1977

The treatment of A and V patterns by monocular surgery.

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.

Humans↗
PubMed1977

Comparison of the performance of pigtail catheters with different number of sideholes.

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.

Cardiac Catheterization↗
PubMed1977

Long-term angiographic assessment of the influence of coronary risk factors on native coronary circulation and saphenous vein aortocoronary grafts.

The influence of smoking, hyperlipidemia, and glucose intolerance on graft patency and rate of progression of obstructive disease in the native circulation was assessed in 99 patients 1 1/2 years after aortocoronary bypass grafting. There were 24 patients in whom none of these risk factors was identified. There were 42 patients with one, 29 with two, and four with three risk factors. Overall graft patency rate was 74%. Graft patency was not significantly influenced by any of these factors either singly or in combination. Progression of obstructive disease in both proximal and distal segments of grafted vessels and in nongrafted vessels was not significantly increased by the presence of one, two, or three risk factors. Over all, there was progression in 56% of segments proximal to grafts, in 8% distal to grafts, and in 14% of nongrafted vessels. Longer term studies will be required to establish any adverse influence of these risk factors on saphenous vein bypass grafts and native circulation.

Adult↗
PubMed1976

Comparison of the WISC and WISC-R on a psychiatric adolescent impatient sample.

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.

Adolescent↗
PubMed1975

Severe alcoholic cardiomyopathy reversed with abstention from alcohol.

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.

Alcoholism↗
PubMed1975

Localization of endovascular infection by selective catheterization with serial cultures.

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.

Aorta, Abdominal↗
PubMed1974

Late results of aortocoronary bypass grafts in 100 patients with stable angina pectoris.

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.

Adult↗