Intraventricular Pressure Gradients in Heart Failure

Intraventricular pressure gradients in heart failure.

The aim of the present study was to characterize intraventricular pressure gradients (IVPGs) in an animal model of chronic heart failure. New Zealand rabbits were treated with doxorubicin (heart failure group, n=5) or saline (control group, n=5) and instrumented with pressure catheters placed in the apex and outflow-tract of left ventricle (LV) and with sonomicrometer crystals placed in the ape...

Noninvasive assessment of ejection intraventricular pressure gradients.

OBJECTIVES The study was designed to validate in vivo a new method to measure ejection intraventricular pressure gradients (IVPGs) by processing color M-mode Doppler data and to assess the effects of inotropic interventions on IVPGs in the clinical setting. BACKGROUND In the absence of obstruction, ejection IVPGs cannot be estimated by Doppler using the simplified Bernoulli equation. METHOD...

Intraventricular conduction delay: a prognostic marker in chronic heart failure.

Chronic heart failure (CHF) is associated with high mortality, and there are several established clinical and laboratory parameters that predict mortality in CHF. The purpose of this study was (a) to identify the best ECG parameter that predicts mortality, (b) to evaluate the prognostic marker of ECG against well-established indicators of prognosis. Relevant data from 241 CHF patients were anal...

Improvement in Diastolic Intraventricular Pressure Gradients in Patients With Hypertrophic Obstructive Cardiomyopathy After Ethanol Septal Reduction

Improvement in diastolic intraventricular pressure gradients in patients with HOCM after ethanol septal reduction.

We sought to validate measurement of intraventricular pressure gradients (IVPG) and analyze their change in patients with hypertrophic obstructive cardiomyopathy (HOCM) after ethanol septal reduction (ESR). Quantitative analysis of color M-mode Doppler (CMM) images may be used to estimate diastolic IVPG noninvasively. Noninvasive IVPG measurement was validated in 10 patients undergoing surgical...