Right ventricular stroke volume assessed by pulmonary artery pulse contour analysis.

Berger, David; Hobi, Jan; Möller, Per W.; Haenggi, Matthias; Takala, Jukka; Jakob, Stephan M. (2020). Right ventricular stroke volume assessed by pulmonary artery pulse contour analysis. Intensive care medicine experimental, 8(1), p. 58. Springer 10.1186/s40635-020-00347-7

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BACKGROUND

Stroke volume measurement should provide estimates of acute treatment responses. The current pulse contour method estimates left ventricle stroke volume. Heart-lung interactions change right ventricular stroke volume acutely. We investigated the accuracy, precision, and trending abilities of four calibrated stroke volume estimates based on pulmonary artery pulse contour analysis.

RESULTS

Stroke volume was measured in 9 pigs with a pulmonary artery ultrasound flow probe at 5 and 10 cmH2O of PEEP and three volume states (baseline, bleeding, and retransfusion) and compared against stroke volume estimates of four calibrated pulmonary pulse contour algorithms based on pulse pressure or pressure integration. Bland-Altman comparison with correction for multiple measurements and trend analysis were performed. Heart rate and stroke volumes were 104 ± 24 bpm and 30 ± 12 mL, respectively. The stroke volume estimates had a minimal bias: - 0.11 mL (95% CI - 0.55 to 0.33) to 0.32 mL (95% CI - 0.06 to 0.70). The limits of agreement were - 8.0 to 7.8 mL for calibrated pulse pressure to - 10.4 to 11.5 mL for time corrected pressure integration, resulting in a percentage error of 36 to 37%. The calibrated pulse pressure method performed best. Changes in stroke volume were trended very well (concordance rates 73-100%, r2 0.26 to 0.987, for pulse pressure methods and 71-100%, r2 0.236 to 0.977, for integration methods).

CONCLUSIONS

Pulmonary artery pulse contour methods reliably detect acute changes in stroke volume with good accuracy and moderate precision and accurately trend short-term changes in cardiac output over time.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Intensive Care, Emergency Medicine and Anaesthesiology (DINA) > Clinic of Intensive Care

UniBE Contributor:

Berger, David; Hänggi, Matthias; Takala, Jukka and Jakob, Stephan

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2197-425X

Publisher:

Springer

Language:

English

Submitter:

Jsabelle Arni

Date Deposited:

09 Oct 2020 17:18

Last Modified:

11 Oct 2020 02:56

Publisher DOI:

10.1186/s40635-020-00347-7

PubMed ID:

33026562

Uncontrolled Keywords:

Pulse contour analysis Right ventricle Stroke volume

BORIS DOI:

10.7892/boris.146946

URI:

https://boris.unibe.ch/id/eprint/146946

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