THE EFFECT OF LEFT-VENTRICULAR BYPASS ON THE RIGHT VENTRICULAR-FUNCTION - EXPERIMENTAL-ANALYSIS OF THE EFFECTS OF ISCHEMIC INJURIES TO THE RIGHT VENTRICULAR FREE WALL AND INTERVENTRICULAR SEPTUM

被引:4
作者
NISHIGAKI, K
MATSUDA, H
HIROSE, H
NAKANO, S
OHTANI, M
OHKUBO, N
MATSUWAKA, R
KAWASHIMA, Y
机构
[1] First Department of Surgery, Osaka University Medical School, Osaka
关键词
Assisted circulation; Ischemic injury; Left ventricular bypass; Right ventricular function;
D O I
10.1111/j.1525-1594.1990.tb02960.x
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Abstract: The right ventricular (RV) function during left heart bypass (LHB) was examined in open‐chest anesthetized mongrel dogs (average weight, 11.8 kg). The LHB was carried out by a left ventricle (LV) to femoral artery bypass using a centrifugal pump for 90 min, and the bypass flow was kept maximum to obtain almost complete decompression of the LV. The RV function was evaluated by hemodynamic parameters and pressure‐dimension (sonomicrometry) relationship at pre‐LHB (control) and 30, 60, and 90 min after LHB (LHB‐30, LHB‐60, and LHB‐90). The materials were divided into three groups after LHB‐30: intact heart (group 1, n = 5), RV free wall ischemia (group 2, n = 5), and interventricular septum (IVS) ischemia group (group 3, n = 8). No significant changes in mean right atrial pressure (mRAP), RV end‐diastolic pressure (RVEDP), RV maximum derivative pressure, or RV fractional shortening (RVFS) were found between pre‐LHB and post‐LHB in groups 1 and 2. On the contrary, group 3 showed significant increases in mRAP and RVEDP, and a decrease in RVFS at LHB‐90 compared to both pre‐LHB and LHB‐30. The RV end‐systolic dimension (percentage of pre‐LHB) showed significant increases at LHB‐90 compared to LHB‐30 in groups 2 and 3. These results indicate that the LHB itself does not depress the RV function in the intact heart and in the RV free wall ischemic heart, while the impairment of the IVS during LHB appears to lead to RV dysfunction. © 1990 International Society for Artificial Organs
引用
收藏
页码:218 / 223
页数:6
相关论文
共 16 条
[1]   EFFECTS OF ISOLATED INTER-VENTRICULAR SEPTAL ISCHEMIA ON GLOBAL AND SEGMENTAL FUNCTION OF THE CANINE RIGHT AND LEFT-VENTRICLE [J].
AGARWAL, JB ;
YAMAZAKI, H ;
BODENHEIMER, MM ;
BANKA, VS ;
HELFANT, RH .
AMERICAN HEART JOURNAL, 1981, 102 (04) :654-658
[2]  
BAKOS AUGUSTUS C. P., 1950, CIRCULATION, V1, P724
[3]   LEFT AND RIGHT VENTRICULAR PUMP FUNCTION AND CONSEQUENCES OF HAVING 2 PUMPS IN ONE HEART - STUDY ON THE ISOLATED CAT HEART [J].
ELZINGA, G ;
PIENE, H ;
DEJONG, JP .
CIRCULATION RESEARCH, 1980, 46 (04) :564-574
[4]   VENTRICULAR INTERFERENCE [J].
ELZINGA, G ;
VANGROND.R ;
WESTERHO.N ;
VANDENBO.GC .
AMERICAN JOURNAL OF PHYSIOLOGY, 1974, 226 (04) :941-947
[5]   RIGHT HEART FUNCTION DURING LEFT HEART ASSIST AND THE EFFECTS OF VOLUME LOADING IN A CANINE PREPARATION [J].
FARRAR, DJ ;
COMPTON, PG ;
DAJEE, H ;
FONGER, JD ;
HILL, JD .
CIRCULATION, 1984, 70 (04) :708-716
[6]   RIGHT HEART INTERACTION WITH THE MECHANICALLY ASSISTED LEFT HEART [J].
FARRAR, DJ ;
COMPTON, PG ;
HERSHON, JJ ;
FONGER, JD ;
HILL, JD .
WORLD JOURNAL OF SURGERY, 1985, 9 (01) :89-102
[7]   CONTRIBUTION OF LEFT-VENTRICULAR CONTRACTION TO THE GENERATION OF RIGHT VENTRICULAR SYSTOLIC PRESSURE IN THE HUMAN-HEART [J].
FENELEY, MP ;
GAVAGHAN, TP ;
BARON, DW ;
BRANSON, JA ;
ROY, PR ;
MORGAN, JJ .
CIRCULATION, 1985, 71 (03) :473-480
[8]   HEMODYNAMIC ALTERATIONS DURING SEPTAL OR RIGHT VENTRICULAR ISCHEMIA IN DOGS [J].
FIXLER, DE ;
MONROE, GA ;
WHEELER, JM .
AMERICAN HEART JOURNAL, 1977, 93 (02) :210-215
[9]   PREDOMINANT RIGHT VENTRICULAR DYSFUNCTION AFTER RIGHT VENTRICULAR DESTRUCTION IN DOG [J].
GUIHA, NH ;
LIMAS, CJ ;
COHN, JN .
AMERICAN JOURNAL OF CARDIOLOGY, 1974, 33 (02) :254-258
[10]  
MIYAMOTO AT, 1983, J THORAC CARDIOV SUR, V85, P49