Although the pericardium can exert a restraining effect on filling of the normal left ventricle, it is uncertain to what extent the pericardium influences left ventricular filling during chronic volume overload. We measured left and right ventricular pressure and left ventricular segment dimension before and after pericardiectomy over a range of left ventricular end-diastolic pressure from <5 t...

Although the pericardium can exert a restraining effect on filling of the normal left ventricle, it is uncertain to what extent the pericardium influences left ventricular filling during chronic volume overload. We measured left and right ventricular pressure and left ventricular segment dimension before and after pericardiectomy over a range of left ventricular end-diastolic pressure from <5 t...

Abbreviations: TEE: Trans esophageal Echocardiography; HF: Heart Failure; HT: Heart Transplantation; LVAD: Left Ventricular Assist Device; ESHF: End Stage Heart Failure; LVHF: Left Ventricular Heart Failure; LV: Left Ventricular; LVEDV: Left Ventricular End Diastolic Volume; PV: Prolonged Ventilation; BNP: B-Type Natriuretic Peptide; VAD: Ventricular Assist Device; LVEDP: Left Ventricular End D...

I investigated the relation of the maximum rate of left ventricular pressure rise to the end-diastolic volume and the comparison of the maximum rate of left ventricular pressure rise-end-diastolic volume relation to the end-systolic pressure-volume relation, using the time-varying elastance model. These studies were performed in 11 dogs chronically instrumented to measure left ventricular press...

We investigated the effect of pacing from the atrium and various ventricular sites on the left ventricular end-systolic pressure-volume relation following autonomic blockade in a total of 10 dogs chronically instrumented to measure left ventricular pressure and determine left ventricular volume from three ultrasonic endocardial dimensions. During ventricular pacing, left ventricular end-diastol...

The left ventricular diastolic pressure-volume.relationship shifts upward during angina, but why this happens is not known. To assess regional myocardial stiffness, we studied 12 patients who.had coronary artery disease using simultaneous left ventricular micromanometer pressure recording and Mmode echocardiography before and during angina induced. by pacing tachycardia. All patients had twoor ...

To determine whether ambulatory blood pressure is more predictive of left ventricular hypertrophy than is casual blood pressure in hypertensive children, echocardiography and ambulatory blood pressure data from 37 untreated hypertensive children were analyzed. Left ventricular mass was calculated using the Devereux equation, left ventricular mass index was calculated as left ventricular mass (i...

The left ventricular diastolic pressure-volume relationship shifts upward during angina, but why this happens is not known. To assess regional myocardial stiffness, we studied 12 patients who had coronary artery disease using simultaneous left ventricular micromanometer pressure recording and M-mode echocardiography before and during angina induced by pacing tachycardia. All patients had two- o...

BACKGROUND To determine how the tissues that surround the heart affect diastolic and systolic function during the perinatal period, we studied the pressure-diameter relation of the left ventricle in partially delivered fetal lambs. METHODS AND RESULTS We anesthetized (1.5-2.0% halothane, balance O2) and ventilated six pregnant ewes (142-144 days of gestation) and then partially delivered each...