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A meta‐analysis of the accuracy and precision of the ultrasonic cardiac output monitor (USCOM)
Author(s) -
Chong S. W.,
Peyton P. J.
Publication year - 2012
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2012.07311.x
Subject(s) - medicine , cardiac output , ultrasonic sensor , accuracy and precision , systematic error , limits of agreement , bolus (digestion) , biomedical engineering , ultrasound , cardiology , statistics , hemodynamics , nuclear medicine , radiology , mathematics
Summary The ultrasonic cardiac output monitor is a non‐invasive, continuous‐wave Doppler monitor that can be used to measure cardiac output. Its accuracy and precision in peri‐operative and critical care has been assessed with varied results. We conducted a meta‐analysis to calculate a pooled mean bias, precision and percentage error for this device. Six studies were suitable for inclusion into a pooled parametric analysis consisting of 320 measurements. The mean weighted bias was −0.39 l.min −1 (95% CI −0.25 to −0.53 l.min −1 ), precision 1.27 l.min −1 and percentage error 42.7% (95% CI 38.5−46.9%). The ultrasonic cardiac output monitor achieved similar agreement with bolus thermodilution to that of other minimally invasive methods of peri‐operative cardiac output monitoring, and may have a useful role in cardiac output monitoring.