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Biomedical subjects

S I Thompson

Publications and source records attributed to S I Thompson.

11 recordsLinked to original sources
PubMed1980

Topical nitrate.

Explore the source record for details and available documents.

Administration, Topical↗
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↗
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

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↗
PubMed1977

Incidence and age distribution of patients with myocardial infarction and normal coronary arteriograms.

Over a 41 month period selective coronary arteriography was performed on all patients age 35 and under seen at our hospital with a documented myocardial infarction. In these 25 patients, 4 (16%) demonstrated no arteriographic evidence of coronary artery disease. One-hundred and fifty-two patients over age 35 with a documented myocardial infarction underwent selective coronary arteriography during the same period. In each of the 15 2 cases, obstructive coronary artery disease was demonstrated. The generally favorable prognosis of patients with myocardial infarction and normal coronary arteriograms has been previously documented. On the basis of our experience and a review of the literature, it is recommended that all patients age 35 and under sustaining a myocardial infarction should undergo selective coronary arteriography, in order to establish prognosis.

Adult↗
PubMed1977

Mediastinal teratoma masquerading as idiopathic enlargement of the right atrium.

A chest roentgenogram of an asymptomatic 22-year-old man revealed prominence of the right heart border characteristic of idiopathic dilatation of the right atrium. On further evaluation, a malignant teratoma was found. The importance of including teratoma and idiopathic enlargement of the right atrium in the differential diagnosis of abnormalities of the right heart border is discussed.

Adult↗
PubMed1977

Left ventricular function in massive pulmonary embolism.

Serial echocardiographic and angiographic measurements of left ventricular function were obtained in a patient with massive pulmonary embolism before and after pulmonary embolectomy. These data suggest that left ventricular dysfunction secondary to right ventricular failure is the results of markedly decreased left ventricular filling in this settings.

Echocardiography↗
PubMed1976

Anomalous origin of the right coronary artery from the left sinus of Valsalva with associated chest pain: report of two cases.

Ectopic origin of the right coronary artery from the left sinus of Valsalva is an infrequent coronary anomaly. The right coronary artery then passes between the aorta and pulmonary artery. We report two such cases with chest pain suggestive of angina pectoris in the absence of atherosclerosis, as demonstrated by selective coronary arteriography. A technique for selectively catheterizing the ectopic right coronary artery is described.

Coronary Vessel Anomalies↗