Search PubMed⌕ Search

Biomedical subjects

W V Vieweg

Publications and source records attributed to W V Vieweg.

At least 109 records · Page 6Linked to original sources
PubMed1980

The distribution and severity of coronary artery disease and left ventricular dysfunction among patients with single coronary artery disease and angina pectoris.

The distribution and severity of coronary artery disease and left ventricular dysfunction were evaluated in 103 patients with single coronary artery disease and angina pectoris. The coronary arterial patterns were separated into right (76), mixed (18), and left (9) systems depending upon the blood supply to the inferior surface of the left ventricle. The following relationships were noted: (1) In patients with single coronary artery disease and angina pectoris, coronary arterial lesions are similar among right, mixed, and left systems. (2) In order of frequency, single coronary artery disease occurred most commonly in the left anterior descending coronary artery (55), next most commonly in the right coronary artery (36), and least commonly in the circumflex/obtuse marginal coronary artery (12). (3) Left ventricular wall motion abnormalities were seen in descending order of frequency: patients with right coronary artery (50%), left anterior descending coronary artery (36%), and circumflex/obtuse marginal coronary artery (25%) disease.

Adult↗
PubMed1980

Coronary arterial and left ventriculographic findings in patients with double-vessel disease and angina pectoris.

The distribution and severity of coronary artery disease and left ventricular wall abnormalities are described in 119 patients with double-vessel disease and angina pectoris. The coronary arterial patterns were divided into right (84), mixed (17), and left (18) systems, depending upon the blood supply to the inferior surface of the left ventricle. Patterns of double-vessel disease were separated into those with 50% or greater reduction of luminal diameter involving the left anterior descending and circumflex/obtuse marginal arteries (2-LC), circumflex/obtuse marginal and right coronary arteries (2-CR), and left anterior descending and right coronary arteries (2-LR). The following relationships were noted. (1) Left anterior descending and right coronary artery disease occurs with twice the frequency of 2-LC or 2-CR disease, supporting the thesis that of the three major coronary arteries, the circumflex/obtuse marginal arteries contribute least to angina pectoris. (2) The mid portion of the left anterior descending artery is most commonly involved and the left main coronary artery least commonly involved in patients with double-vessel disease. (3) Left ventricular wall motion abnormalities are found in one-half of patients with double-vessel disease and angina pectoris with hypokinesis usually found in all areas except at the apex where dyskinesis is usually seen.

Angina Pectoris↗
PubMed1980

Sympathetic nervous system activity during sodium restriction in essential hypertension.

Sympathetic nervous system activity was studied in 38 patients with essential hypertension during high- and low-sodium diets. Salt restriction was associated with a modest (6 mmHg) decline in mean arterial pressure, while the urinary excretion of catecholamines, metanephrines, and vanillylmandelic acid increased significantly. Plasma renin activity also increased. It is concluded that short-term low-sodium diet therapy for essential hypertension results in only small decrements in mean arterial pressure and may be limited in hypotensive effect by activation of the sympathetic nervous system. Support is offered for the rationale of sympatholytic drug therapy as an initial step in the management of hypertensive patients requiring arterial pressure reductions greater than those afforded by diet alone.

Adult↗
PubMed1980

"Pseudo-tumor" of the right ventricular outflow tract and congenital pulmonary valve regurgitation: a case report.

The M-mode and 2-D echocardiographic features of an unusual case of a "pseudo-tumor" of the right ventricular outflow tract are reported. The unique pathologic findings of the pulmonary valve with congenital fenestrations and the clinical implications of this "pseudo-tumor" are discussed. Whenever calcification is noted at fluoroscopy to exist in a region or structure being evaluated by echocardiography, caution must be taken to avoid overestimating the size. Indistinct, dense reflectances without specific motion or appearance of a mass further helps to distinguish the reflectances from an actual structure of significance. Furthermore, all clinical, angiographic, and echocardiographic information must be interpreted together when either the angiogram or the echocardiogram is confusing and potentially misleading.

Adult↗
PubMed1980

Semiautomated method for evaluation of left ventricular regional wall motion in coronary artery disease.

Regional left ventricular wall motion was independently assessed in 436 patients using both subjective visual inspection of ventriculograms and objective computer-determined percent change in the square root of the area between systolic and diastolic outlines. Agreement between subjective and objective techniques was greatest at the ventricular apex and least at the base and partly dependent on the number of abnormal segments present. Objective analysis of regional wall motion provides a permanent quantitative record of wall motion and shows good agreement with meticulous subjective inspection of ventriculograms. As such, it has potential as an adjunct to ventriculography.

Coronary Disease↗
PubMed1980

Dressler's syndrome and angina pectoris relieved by surgery.

A 49-year-old woman with progressive angina pectoris developed chronic Dressler's syndrome following a second myocardial infarction. Control of the chronic pericarditis required long-term steroid therapy. Because of multiple complications generated by the steroid administration, she underwent coronary angiography followed by pericardiectomy and coronary artery bypass surgery. The patient remains asymptomatic without steroid or antianginal medication five years after surgery.

Angina Pectoris↗
PubMed1979

Distribution and severity of coronary artery disease in 500 patients with angina pectoris.

The distribution and severity of coronary disease in 500 patients with angina pectoris and at least one area of 50% or greater reduction of luminal diameter in a major coronary artery were compared with respect to patients' age and coronary arterial pattern. The coronary arterial patterns were separated into right (360 patients), mixed (89 patients), and left (51 patients) systems, depending upon the blood supply to the inferior surface of the left ventricle. The following relationships were noted: 1) In patients with angina pectoris, the distribution and severity of coronary artery disease is similar from the third to eighth decade. 2) Coronary arterial stenoses of 50-70% of greater reduction of luminal diameter involve most frequently the proximal portion of the major vessels. Coronary artery disease is multivessel in nature in 80% of cases. In single vessel disease the left anterior descending artery is involved most frequently. 3) The left main coronary artery is moderately to severely obstructed less frequently in individuals with left (2%) as compared to right (8%) and mixed (10%) systems. Otherwise, the distribution of coronary artery disease is similar in right, mixed, and left systems. 4) Coronary artery disease is a diffuse rather than a focal process. As demonstrated by coronary arteriography, patients with coronary artery disease have smaller vessels throughout the arterial tree as compared with individuals free of evident coronary atherosclerosis.

Adult↗
PubMed1979

Transseptal and retrograde left ventricular catheterization in patients with the stent-mounted porcine xenograft valve prosthesis in the aortic position.

Cardiac catheterization techniques for measuring the systolic pressure gradient across the stent-mounted porcine xenograft in the aortic position and accomplishing left ventriculography are described. The transseptal technique is a rapid and predictable means of entering the left ventricle but requires a highly skilled operator. Retrograde left ventricular catheterization via the femoral artery is a technique familiar to all invasive cardiologists. Usually a pitfall catheter is used. In patients with the stent-mounted procine xenograft in the aortic position, we have found the A2 Multipurpose catheter to be the fastest and most predictable means of entering the left ventricle from the groin. Potential complications of retrograde left ventricular catheterization in patients with aortic valve prostheses are discussed.

Aortic Valve↗
PubMed1979

Selective coronary arteriography in congenitally corrected transposition of the great arteries.

Three cases of congenitally corrected transposition of the great arteries in adults who underwent selective coronary arteriography are presented. The morphologic features of the epicardial coronary anatomy are distinctive and are identifiable angiographically as morphologically right and left coronary arteries that are specifically concordant with the morphologically right and left ventricles. This relation is constant in the presented cases, in previously published coronary arteriograms of congenitally corrected transposition of the great arteries and in a review of the anatomic studies of congenitally corrected transposition of the great arteries that identify the coronary arterial pattern. Thus the angiographic characteristics of the epicardial coronary arterial pattern permit identification of the morphologic features of the underlying ventricle regardless of other spatial relations.

Adult↗
PubMed1979

Endocarditis involving a left ventricular apicoaortic valve-bearing conduit.

Fatal infectious endocarditis involving a left ventricular apicoaortic valve-bearing conduit occurred in a 20-year-old man. Risk factors included early postoperative wound infection, broad spectrum suppressive antibiotic administration, and inadequate dental prophylaxis against infectious indocarditis. Palliative therapy included intravenous antibiotic administration and removal of the conduit. Lessons learned are discussed.

Adult↗
PubMed1979

Historic and angiographic features of young adults surviving myocardial infarction.

Sixty-eight survivors of myocardial infarction occurring before the age of 36 years were studied using selective coronary cinearteriograms, regardless of symptoms. Three groups of patients were delineated; 56 patients (82 percent) had obstructive coronary arterial disease, nine (13 percent) had normal coronary arteries, and three (4 percent) had congenital coronary arterial anomalies. Because the prognosis in these three groups is different, all young patients with myocardial infarction should undergo coronary arteriographic studies after a suitable period of convalescence. Myocardial infarction in the young differs from that in the elderly by virtue of a more heterogeneous underlying coronary anatomy, an overwhelming preponderance of male patients, and a better reported prognosis.

Adult↗
PubMed1978

Transmural myocardial infarction in the absence of coronary arterial luminal narrowing in a young man with single coronary arterial anomaly.

Reported is a case of single coronary arterial anomaly (SCAA) with its origin from the right sinus of Valsalva as demonstrated by selective coronary arteriography. No branches coursed between the great vessels. Electrocardiography and vectorcardiography were consistent with inferior wall myocardial infarction, although subsequent coronary arteriograms were free of luminal narrowing. While this is an infrequently recognized isolated coronary anomaly, it may carry significant risk of myocardial ishcemia. This risk may not depend alone upon the passage of a branch of SCAA between the great vessels. Evidence of precocious ischemic heart disease should alert the angiographer to look for anomalous coronary anatomy.

Adult↗