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“Expiratory holding” approach in measuring end-expiratory pulmonary artery wedge pressure for mechanically ventilated patients

Authors Yang W, Zhao X, Feng Q, An Y, Wei K, Wang W, Li C, Cheng X

Received 27 July 2013

Accepted for publication 24 August 2013

Published 8 October 2013 Volume 2013:7 Pages 1041—1045


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Wanjie Yang,1 Xuefeng Zhao,1 Qingguo Feng,1 Youzhong An,2 Kai Wei,1 Wei Wang,1 Chang Li,1 Xiuling Cheng1

1Intensive Care Unit, the Fifth Central Hospital of Tianjin, Tianjin, People’s Republic of China; 2Intensive Care Unit, Peking University People’s Hospital, Beijing, People’s Republic of China

Objective: To accurately measure the end-expiratory pulmonary artery wedge pressure (PAWP) with the “expiration holding” function on the ventilator and the “pulmonary artery wedge pressure review” software on the monitor.
Materials and methods: Fifty prospective measurements were made on 12 patients undergoing pulmonary artery catheter and mechanical ventilation. All measurements were divided into <8 mmHg or ≥8 mmHg subgroups according to respiratory variability, and they were then subdivided into either an airway pressure display measurement group (AM group) or an expiration holding (EH) group for comparison.
Results: In all measurements, the two groups showed similar levels of accuracy; however, for the time spent for measurement, the EH group was much faster than the airway pressure display measurement group (P<0.001). Additionally, the EH group was associated with lower medical costs.
Conclusion: The expiration holding approach measured the PAWP more accurately, more quickly, and with reduced costs in comparison to the airway pressure display approach.

Keywords: expiration holding, pulmonary artery wedge pressure, eePAWP, mechanical ventilation, pulmonary artery catheter

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