Alterations in regional pulmonary blood flow after valve surgery in patients with mitral valve disease

Keimyung Medical Journal 1987;6(1):108-112.

승모판 질환에서 판막수술에 따른 폐혈류 분포의 변화

이광숙; 김옥배

Abstract

Perfusion lung scan using-99mTc-MAA was performed in 18 patients with mitral valve disease before and after valve surgery and 10 normal subjects. The ratio of 9flnlTc-MAA distribution per unit of lung volume in the upper third of the right Jung to that in the lower third; designated "U/L ratio" was calculated and taken to represent the ratio of blood flow in these two regions. In 10 normal subjects in whom Mb?TC-IAA was infused in the supine position; U/L ratio averaged 1.11-J 0.24; indicating essentially uniform distribution. Preoperative U/L ratio in the 18 patients with mitral valve disease averaged 2.29±0.67; a valve which was significantly greater than normal. Y./L ratio after surgical correction fell from preoperative value 2.29+0.67 to 1.71±0.44 three months postoperatively but still higher than that of the normal subjects.