Aortic regurgitation: ventricular response after aortic valve replacement.
This study was designed to evaluate the usefulness of the ratio of the preoperative regurgitant stroke volume to left ventricular end-diastolic volume (RSV/LVEDV) for assessing the left ventricular function preoperatively. In 26 patients with aortic regurgitation (AR), the percent decrease in LVEDV was compared with the preoperative RSV/LVEDV, ejection fraction (EF), LVEDV, left ventricular end-systolic volume (LVESV) or left ventricular end-diastolic pressure (LVEDP). There was a significant correlation between the percent decrease in LVEDV and RSV/LVEDV. Patients with RSV/LVEDV of more than 0.26 had a significantly smaller postoperative left ventricular end-diastolic volume index (LVEDVI) and left ventricular end-systolic volume index (LVESVI), and a greater postoperative EF than patients with smaller RSV/LVEDV. All but one patient with RSI/LVEDVI larger than 0.0016 LVEDVI had normal postoperative LVEDVI. Based on these findings, it is concluded that the RSV/LVEDV is an useful indicator for preoperative evaluation of left ventricular functions in patients with AR. Surgical intervention for patients with AR should be recommended before the RSI/LVEDVI drops to less than 0.0016 LVEDVI, to expect good postoperative ventricular responses.
Tabayashi
K
K
Department of Thoracic and Cardiovascular Surgery, Tohoku University School of Medicine, Sendai.
Sadahiro
M
M
Yaginuma
G
G
Ito
Y
Y
Endo
M
M
Akimoto
K
K
Suzuki
Y
Y
Mohri
H
H
D000328:Adult; D000368:Aged; D001022:Aortic Valve Insufficiency / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D011184:Postoperative Period; D013318:Stroke Volume / Q000502:physiology*