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Biomedical subjects

A M Yousof

Publications and source records attributed to A M Yousof.

46 records · Page 3Linked to original sources

The limitation of mitral echocardiography in combined mitral lesions.

In combined mitral stenosis and incompetence, the mitral echocardiogram is able to estimate the degree of mitral stenosis (i. e. mitral valve area) without being able to detect or quantify mitral incompetence. A diastolic closure rate of 20 mm/sec or less does not exclude significant mitral incompetence as claimed by others. Cardiac catheterization is still necessary in mitral stenosis, where concominant mitral incompetence is suspected clinically, to confirm its presence and quantify its degree.

Cardiac Catheterization↗

The effect of atrial pacing on the mitral echocardiogram of mitral stenosis recorded simultaneously with haemodynamic data.

Simultaneous mitral echocardiograms and haemodynamic data were recorded in six cases of mitral stenosis during atrial pacing. Due to the prolongation of the P-R interval during atrial pacing, the diastolic closure rate E-F was measurable up to a heart rate of 80 per min. only. At a heart rate of 80 or less, both in sinus rhythm and during atrial pacing the diastolic closure rate remained essentially the same in each case. However, above 80/min E-F became too short and post-atrial systolic closure A-B only was available for measurement which was higher in each case than its corresponding E-F value. This contrasts with cases with sinus rhythm where the diastolic closure rate E-F measurable up to a heart rate of 110 per minute.

Cardiac Output↗

Congenital pericardial defect associated with atrial and ventricular septal defects.

Congenital pericardial defects are rare anomalies but in recent years improved diagnostic techniques have often led to a pre-operative diagnosis. The present communication describes a case of a partial pericardial defect with herniation of the lung into the pericardium associated with a lung cyst which is extremely rare. The sternum showed some deficiency in its lower portion. Atrial and ventricular septal defects with a small pericardio-peritoneal foramen were also present.

Cardiomegaly↗

Long term results of valvar replacement in Kuwaitis.

The long term follow-up of 59 Kuwait citizens who underwent valve replacement is presented. There was an early mortality of 12% and late mortality of another 12% with actuarial survival of 76% at five years. These values compare well with earlier Western series. The mean age of 26 is about half that reported in the Western literature. The ratio of mitral valve involvement (pure or mixed) to aortic valve involvement is 2.5:1 indicating that rheumatic heart disease is still prevalent. However, no case was operated during rheumatic activity. Anticoagulation therapy was well tolerated among the Bedouin community with acceptable thromboembolic and bleeding complications. There was high foetal wastage with only two live births out of six pregnancies. Valve malfunctions, haemolysis and subacute bacterial endocarditis complications are also discussed and were little different from other series.

Adolescent↗