J.Jpn. Surg. Soc.
ISSN 1880-1129

[Abstract] [Full Text PDF] （in Japanese / 424KB） [Members Only And Two Factor Auth.]

J.Jpn. Surg. Soc.. 94(6): 625-630, 1993

Original article

INTRAOPERATIVE ASSESSMENT OF LEFT VENTRICULAR FUNCTION WITH LEFT VENTRICULAR PRESSURE-VOLUME RELATIONSHIPS IN PATIENTS WITH OPEN HEART SURGERY

First Department of Surgery, School of Medicine, Gifu University, Gifu, Japan

Yoshio Mori, Shinji Murakawa, ken-ichiro Asuma, Taku Yamada, Masaki Hishimoto, Hajime Hirose

There are few reports on the assessment of the left ventricular function from left pressure-volume relationships intraoperatively in open heart surgery. LV Emax, Ea/Ees and EW/PVA efficiency were assessed intraoperatively by using a left ventricular conductance catheter in patients with aortocoronary bypass. After dobutamine administration (DOB, 10μg/kg/min), LV Emax was increased by 33±23% during cardiopulmonary bypass (CPB) and 60±38% after weaning from CPB. Ea/Ees changed from 2.14±1.36 to 1.08±0.47 after weaning from CPB with dobutamine administration. EW/P VA efficiency changed from 52±12% to 66±10%. The change of LV Emax after dobutamine administration was correlated with the change of LV Emax after weaning from CPB and was correlated with Ea/Ees and EW/PVA efficiency after weaing from CPB. Wec oncluded that measuring LV Emax before and after dobutamine administration during CPB is useful to assess left ventricular contraction clinically.

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