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Review
. 2018 Jun 20;8(1):73.
doi: 10.1186/s13613-018-0418-2.

Estimating mean circulatory filling pressure in clinical practice: a systematic review comparing three bedside methods in the critically ill

Marije Wijnberge  1   2   3 , Daniko P Sindhunata  1 , Michael R Pinsky  4 , Alexander P Vlaar  2   3 , Else Ouweneel  1 , Jos R Jansen  5 , Denise P Veelo  1 , Bart F Geerts  1
Affiliations
Review

Estimating mean circulatory filling pressure in clinical practice: a systematic review comparing three bedside methods in the critically ill

Marije Wijnberge et al. Ann Intensive Care. .

Abstract

The bedside hemodynamic assessment of the critically ill remains challenging since blood volume, arterial-venous interaction and compliance are not measured directly. Mean circulatory filling pressure (Pmcf) is the blood pressure throughout the vascular system at zero flow. Animal studies have shown Pmcf provides information on vascular compliance, volume responsiveness and enables the calculation of stressed volume. It is now possible to measure Pmcf at the bedside. We performed a systematic review of the current Pmcf measurement techniques and compared their clinical applicability, precision, accuracy and limitations. A comprehensive search strategy was performed in PubMed, Embase and the Cochrane databases. Studies measuring Pmcf in heart-beating patients at the bedside were included. Data were extracted from the articles into predefined forms. Quality assessment was based on the Newcastle-Ottawa Scale for cohort studies. A total of 17 prospective cohort studies were included. Three techniques were described: Pmcf hold, based on inspiratory hold-derived venous return curves, Pmcf arm, based on arterial and venous pressure equilibration in the arm as a model for the entire circulation, and Pmcf analogue, based on a Guytonian mathematical model of the circulation. The included studies show Pmcf to accurately follow intravascular fluid administration and vascular compliance following drug-induced hemodynamic changes. Bedside Pmcf measures allow for more direct assessment of circulating blood volume, venous return and compliance. However, studies are needed to determine normative Pmcf values and their expected changes to therapies if they are to be used to guide clinical practice.

Keywords: Blood pressure; Blood volume; Critical care; Hemodynamics; Intensive care; Venous pressure.

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Figures

Fig. 1
Fig. 1
The venous return curve (a) combined with the cardiac output curve (b). The intersection of these two curves (c) is the working point of the circulation. The central venous pressure when venous return equals zero is the Pmcf (d). The slope of the VR is determined by the resistance to venous return
See this image and copyright information in PMC

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