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Biomedical subjects

A Bakst

Publications and source records attributed to A Bakst.

At least 37 records · Page 2Linked to original sources
PubMed1980

Early calcification and obstruction of a mitral porcine bioprosthesis.

A patient is described in whom severe prosthetic valvular stenosis developed ten months after mitral valve replacement with an Angell-Shiley porcine heterograft. At emergency operation, calcification of the prosthesis was revealed. Early calcification and stenosis of a porcine heterograft valve is a life-threatening complication that must be recognized promptly and treated by emergency valve replacement.

Adolescent↗
PubMed1980

Isolated circumflex coronary artery obstruction.

Isolated obstruction of the circumflex branch of the left coronary artery was present in 10 of 1,000 patients undergoing selective coronary angiography for suspected coronary artery disease. The clinical syndrome consisted of typical angina pectoris (six patients), atypical chest pain (three patients) and episodes of myocardial infarction (three patients). Left ventricular damage was mild, never involving more than 20% of the left ventricular circumference as measured during angiography. Left axis deviation was very common on the ECG. In eight patients, the ECG showed a mean frontal QRS axis of 0 degrees or less and in two, an axis of less than -30 degrees. The circumflex lesion typically occurred toward the end of the proximal third of the artery, often immediately after its major anterolateral marginal branch. Two patients had complete obstruction and eight had subtotal circumflex narrowing: the clinical picture was not differnet in these two subgroups. Overall left ventricular function, as measured by ejection fraction and left ventricular diastolic pressure, was normal in most of the patients. End-diastolic pressure was slightly increased in five patients, two of whom also had systemic hypertension.

Angina Pectoris↗
PubMed1978

Echocardiographic assessment of a Blalock-Taussig shunt.

A case of echocardiographic confirmation of the patency of a Blalock-Taussig anastomosis is presented. Using the left atrium-to-aortic ratio (LA/Ao), we could document an increase in left atrial size representing an increase in pulmonary blood flow. This is the first report using echocardiography to prove the patency of a systemic-to-pulmonary artery anastomosis.

Echocardiography↗
PubMed1975

Significance of exercise-induced second degree atrioventricular block.

A case of second degree, type II, atrioventricular block precipitated by exercise is presented. It is suggested that exercise and other vagolytic manoeuvres may be used as a means of differentiating type I from type II atrioventricular block: the conduction disturbance of type I improves with exercise, whereas that of type II deteriorates with exercise.

Aged↗