Asymptomatic cor triatrium in an elderly patient--observation by biplanar transesophageal Doppler echocardiography.

We present a case of asymptomatic cor triatrium in a 78-year-old man, in whom the condition was diagnosed and the severity of the lesion was accurately assessed by biplanar transesophageal echocardiography. To our knowledge, our patient is the oldest living person with cor triatrium.

A comparison of two exponential models of the time constant during left ventricular isovolumic pressure decay in coronary artery disease.

To make a comparison of two exponential models of the time constant (Tw: Weiss's method, Tc: exponential analysis with a variable asymptote) during left ventricular (LV) isovolumic relaxation, we assessed LV pressure decay in 104 patients with coronary artery disease (CADpts) and 21 normal subjects at rest and after pacing, and investigated the hemodynamic determinants of these two models using forward-backward stepwise multiple regression analysis. At rest, Tw was prolonged as the left ventricular minimal pressure (LVPmin), the left ventricular end-diastolic pressure (LVEDP) and the end-systolic volume (ESV) increased (multiple regression coefficient: R = 0.87), whereas Tc was prolonged as ESV and regional wall motion abnormality (RWMA) increased (R = 0.

Effects of left ventricular asynchrony on time constant and extrapolated pressure of left ventricular pressure decay in coronary artery disease.

To elucidate the effects of ventricular asynchrony with or without myocardial ischemia on the time constant of left ventricular pressure decay and asymptote, that is, the level to which pressure would decrease if isovolumic pressure decrease continued infinitely, left ventriculography and pressure measurements were investigated in 14 normal subjects and 25 patients with coronary artery disease. Ventricular asynchrony was quantitated by the segmental area-time curve. This study consisted of two parts.

Effects of diltiazem and nitroglycerin on left ventricular diastolic properties in patients with coronary artery disease.

To determine the effects of diltiazem (DTZ) and nitroglycerin (NTG) on left ventricular (LV) diastolic relaxation and filling in patients with cornary artery disease (CADpts), LV graphy and time constant (Tc) of LV isovolumic pressure decay were studied before and 5 min after intravenous DTZ (10 mg) in 16 CADpts and sublingual NTG (0.3 mg) in 11 CADpts. Diastolic regional ventricular filling dynamics were quantitated by segmental area-time curves during early-, mid- and late-filling periods.

Hemodynamic effects of digoxin on congestive heart failure in old myocardial infarction, dilated cardiomyopathy, acute myocardial infarction and mitral stenosis.

The hemodynamic effects of digoxin (0.01 mg/Kg) on congestive heart failure were compared in 32 patients with old myocardial infarction (OMI) (n = 9), dilated cardiomyopathy (DCM) (n = 10), acute myocardial infarction (AMI) (n = 5) and mitral stenosis (MS) (n = 8). The responses of heart rate (HR) and pulmonary capillary pressure (PCP) to digoxin in OMI, DCM and MS were marked but different in each of these groups and no significant changes were found in patients with AMI.

Assessment of left ventricular function in ischemic heart disease. The relation between pressure decay during the isovolumic relaxation phase and regional wall motion abnormality.

We examine whether regional wall motion abnormality (RWMA) could contribute to the slowed relaxation rate of the left ventricle (LV) in patients with coronary artery disease (CADpts). Simultaneous observations were made on the time constant (Tc) of the isovolumic pressure decay and left ventriculography at the control period and after right atrial pacing. Subsequently, the subjects investigated were divided into 3 groups, i.

[Regional myocardial contraction in ischemic heart disease: evaluation of regional myocardial thickening by two-dimensional echocardiography].

There were many studies concerning the evaluation of regional wall motion in ischemic heart disease by left ventriculography (LVG) and two-dimensional echocardiography (2DE), but only a few observations on the regional myocardial thickening have been reported. In a survey of 48 cases of old myocardial infarction, we selected 21 cases with adequate 2DE images for the evaluation of regional wall motion and thickening. In all cases the 2DE examinations were performed within seven days before or after LVG examinations.

[Two-dimensional echocardiographic findings in a case of arrhythmogenic right ventricular dysplasia].

Two-dimensional echocardiographic findings in a patient with arrhythmogenic right ventricular dysplasia ( ARVD ) were described. A 38-year-old male was admitted to our hospital on January 1982 because of palpitation and dyspnea caused by ventricular tachycardia. A cardiothoracic ratio was 45% and electrocardiogram revealed right axis deviation and T wave inversion in right precordial leads.

[Intracardiac flow pattern in dilated cardiomyopathy studied with pulsed Doppler echocardiography].

Left ventricular (LV) flow dynamics were analyzed by pulsed Doppler echocardiography in patients (pts) with dilated cardiomyopathy (DCM). Subjects consisted of five normal controls, 27 pts with DCM, five with myocardial infarction and five with valvular heart disease. The equipment used was a two-dimensional echocardiograph ( Toshiba SSH- 11A ) coupled with a pulsed Doppler flowmeter ( Toshiba SDS-10A).