Exaggerated posterior aortic wall excursion. A new echocardiographic feature of atrial septal defect with left to right shunt?

In 32 adult patients with a secundum type atrial septal defect (ASD) and normal pulmonary vascular resistance, the posterior aortic wall excursion (AoE) was measured using M-mode echocardiography, before, 16.2 +/- 4.5 days after, and 2.

Computer analysis of left ventricular pressure-volume relationships by echocardiography.

Programs were developed for the analysis of left ventricular pressure-volume relationships in clinical situations. Regression lines of end-systolic points on the pressure-volume plane were obtained from nine patients. Correlation coefficients between end-systolic pressure and volume were high.

Arrhythmia during insulin-induced hypoglycemia in a diabetic patient.

The temporal relationship between the level of blood glucose and the frequency of ventricular premature contractions (VPCs) during 24 hours was examined in a 45-year-old man with diabetes mellitus who was treated with a regular insulin injection. The number of VPCs increased sharply when the blood glucose level fell to about 50 mg/dL while the patient was awake. There was a minimal increase in VPCs during sleep, despite a decrease to 21 mg/dL in the blood glucose level.

Noninvasive assessment of right ventricular systolic pressure in atrial septal defect: analysis of the end-systolic configuration of the ventricular septum by two-dimensional echocardiography.

This study was performed to determine if 2-dimensional echocardiography (2-D echo) can be used to predict right ventricular (RV) systolic pressure. Ninety-one patients with atrial septal defect were studied prospectively. Analysis of the end-systolic configuration of the ventricular septum (VS) in the short-axis 2-D echocardiogram allowed classification of patients into 4 groups: type A (67 patients)--the VS was more circular at end-systole than at end-diastole; type B (9 patients)--the VS curvature at end-systole was same as or further flattened compared with that at end-diastole; type C (9 patients)--the VS was straight at end-systole; type D (6 patients)--the VS curvature at end-systole was reversed so that it was convex toward the left ventricle.

Diagnosis of tricuspid stenosis by M-mode and two-dimensional echocardiography.

A decreased diastolic slope (EF slope) of the tricuspid valve on the M-mode echocardiogram may not indicate the presence of tricuspid stenosis (TS). To explore diagnostic echocardiographic signs of TS, we examined an M-mode and 2-dimensional (2-D) echocardiogram in 9 patients with documented TS of rheumatic origin and in 14 patients with rheumatic heart disease who showed a decreased EF slope (less than 40 mm/s) but did not have TS. By M-mode echocardiography, the EF slope was not different between patients with TS (24.

Cardiac effects of aprindine in patients with or without cardiac dysfunction: echocardiographic and clinical evaluation.

Cardiac effects of aprindine, a relatively new antiarrhythmic agent, were investigated by means of echocardiography in nine patients with ventricular arrhythmias. Three patients had normal cardiac function, and six patients had dilated cardiomyopathy. Aprindine was administered orally in a dosage of 50 to 75 mg/d.