Title :
Right ventricular/vascular coupling during acute pulmonary hypertension
Author :
Fourie, Pieter R. ; Coetzee, André R. ; Rebel, Aart ; Bolliger, Chris T.
Author_Institution :
Dept. of Med. Physiol. & Biochem., Stellenbosch Univ., Tygerberg, South Africa
Abstract :
The ventricular/vascular coupling of the intact right heart was investigated under normal conditions as well as conditions of acute pulmonary hypertension. The normal right ventricle operates at maximum efficiency and submaximal stroke work under normal loading conditions. With acute pulmonary hypertension, the effective afterload increases to a situation where the effective afterload is greater than end-systolic time-varying elastance which is characterized by a decrease in stroke volume and the advent of ventricular pump failure
Keywords :
cardiology; haemodynamics; acute pulmonary hypertension; cardiac haemodynamics; effective afterload; end-systolic time-varying elastance; intact right heart; right ventricular/vascular coupling; stroke volume; ventricular pump failure; Arteries; Catheters; Equations; Heart; Hypertension; Myocardium; Statistical analysis; Stochastic processes; Transducers; Valves;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95595
