PMID: 9423064Feb 1, 1990Paper

The relationship between preoperative status and postoperative exercise tolerance after mitral valve replacement

Rinshō Kyōbu Geka = Japanese Annals of Thoracic Surgery
A SasakiS Komatu

Abstract

Treadmill exercise test was performed for the evaluation of exercise tolerance after mitral valve replacement. The duration of maximum exercise tolerance in TR free group had no significant difference as compared with TR combined group. Preoperative RV function in TR combined group was kept relatively good as shown in cardiac index, pulmonary arterial and right atrial pressure. As hemodynamics was improved by TAP (TVR), it may not occur the difference in exercise tolerance between the groups. The duration of maximum exercise tolerance with MS group showed shorter tolerance than that of MR group. This difference in MS group might be considered due to the limitation of LV dilatation by rheumatic cardiac damage. Exercise tolerance after MVR was significantly lowered by atrial fibrillation, cardio-thoracic ratio over 60% and pulmonary vascular resistance over 3.0 Runits.m2.

Related Concepts

Related Feeds

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Atrial Filbrillation

Atrial fibrillation refers to the abnormal heart rhythm characterized by rapid and irregular beating of the atria. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.