Increased Pulmonary Artery Diastolic-pulmonary Wedge Pressure Gradient After Cardiopulmonary Bypass

Overview

Journal Can Anaesth Soc J

Specialty Anesthesiology

Date 1985 Mar 1

PMID 3872705

Citations 2

Authors

J Heinonen

M Salmenpera

O Takkunen

Affiliations

Soon will be listed here.

Abstract

In 29 patients undergoing elective coronary artery bypass grafting, the diastolic pulmonary arterial pressure-pulmonary capillary wedge pressure gradient (DPAP-PCWP) and related haemodynamic parameters were determined before and after induction of anaesthesia, immediately after cardiopulmonary bypass (CPB) and one and three hours after CPB. The DPAP-PCWP gradient remained unchanged after induction of anaesthesia but was significantly increased after CPB. A gradient of 5 mmHg or greater was observed in 16 patients after CPB, whereas none of the patients showed such a gradient before CPB. A significant correlation was found between the change in DPAP-PCWP and the change in pulmonary vascular resistance (PVR). It is concluded that DPAP should not be used as a substitute of PCWP in the early postbypass period without frequent confirmation of the presence of the normal small DPAP-PCWP gradient. Since an increase of PVR may impair right ventricular ejection, we recommend the routine measurement of DPAP-PCWP gradient in the postbypass period.

Citing Articles

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