当前位置： SCI文献检索 > JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA期刊下所有文献 > Hepatic blood flow and right ventricular function during cardiac surgery assessed by transesophageal echocardiography.

Hepatic blood flow and right ventricular function during cardiac surgery assessed by transesophageal echocardiography.

Abstract：

OBJECTIVE:To determine the effect of cardiopulmonary bypass (CPB) on hepatic blood flow (HBF) and the hepatic venous flow pattern. DESIGN:Single-arm prospective study. SETTING:University hospital operating room and intensive care unit. PARTICIPANTS:Eight patients ranging in age from 57 to 73 years undergoing cardiac surgery. INTERVENTIONS:Transesophageal echocardiography (TEE) was used to assess HBF before, during, and after CPB by pulsed-wave Doppler ultrasound recordings of hepatic venous flow velocity and two-dimensional recordings of the hepatic vein diameter. Hepatic vein oxygenation was monitored by hepatic vein catheterization, and gastric intramucosal pH (pHi) was followed by tonometry. MEASUREMENTS AND MAIN RESULTS:The HBF was unchanged after the start of CPB but was reduced from the baseline value 415 (standard error of the mean 40) mL/min to 225 (25) mL/min during hypothermic CPB (p < 0.05). Cardiac index, right ventricular ejection fraction, and arterial and tonometric pH were essentially unchanged during the study period. Hepatic vein and mixed venous saturation were unchanged compared to control during CPB and were reduced at 2 and 3 hours after CPB (p < 0.01). Six of the patients had a normal predominant systolic flow pattern before surgery. In the postoperative period, seven patients showed an abnormal predominant diastolic filling pattern. CONCLUSIONS:TEE represents a useful tool in assessing changes in the hepatic blood flow. The HBF was reduced during hypothermic CPB, but this was not accompanied by a reduced pHi. The changes in the venous flow pattern with a reduction in systolic flow could be explained by impaired atrial relaxation.

journal_name

J Cardiothorac Vasc Anesth

journal_title

Journal of cardiothoracic and vascular anesthesia

authors

Gårdebäck M,Settergren G,Brodin LA

doi

10.1016/s1053-0770(96)80090-5

subject

Has Abstract

pub_date

1996-04-01 00:00:00

pages

318-22

issue

3

eissn

1053-0770

issn

1532-8422

pii

S1053-0770(96)80090-5

journal_volume

10

pub_type

杂志文章

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