Does patient position influence Doppler signal quality from the USCOM ultrasonic cardiac output monitor?

Anesthesia and Analgesia
Lyndon SiuJohn Monagle

Abstract

The USCOM1A continuous wave cardiac output monitor (USCOM Pty Ltd., Sydney, NSW, Australia) is a novel Doppler-based device used to measure cardiac output noninvasively. The proper alignment of the transducer, and hence the ultrasound beam to the aortic or pulmonary outflow tracts, is essential to acquire accurate measurements and often much time is spent on transducer and/or patient positioning. In this prospective, observational, crossover study, we investigated the effect of patient positioning on the acquisition of cardiac output measurement with USCOM1A. We measured cardiac output using USCOM1A in 30 healthy adult volunteers, each in five different positions: sitting, supine, Trendelenburg (20 degrees), left lateral tilt (20 degrees), and right lateral tilt (20 degrees) and compared the time required to obtain acceptable measurements. We also compared the quality of the Doppler signal obtained in these positions using a scoring system designed for this study. There was a higher rate of failed measurement, the mean time to obtain the first acceptable measurement was prolonged and the optimal measurement obtained within a 5-min period was of a lower quality in the sitting position compared with the other four positions. Our ...Continue Reading

References

Apr 1, 1992·Journal of the American College of Cardiology·S M NidorfA E Weyman
Sep 1, 1983·Clinical Nuclear Medicine·R Howman-Giles, P M Rahilly
Jun 1, 1996·Intensive Care Medicine·A Bach
Jun 1, 1996·Intensive Care Medicine·C TeraiY Okada
Sep 1, 1995·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·F KusumotoE Foster
Feb 15, 2001·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·D EhlerUNKNOWN American Society of Echocardiography Sonographer Training and Education Committee
Feb 12, 2002·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Miguel A QuiñonesUNKNOWN Doppler Quantification Task Force of the Nomenclature and Standards Committee of the American Society of Echocardiography
Jun 6, 2006·Journal of Cardiothoracic and Vascular Anesthesia·Rajesh ChandNaresh Trehan
Oct 3, 2006·Current Opinion in Anaesthesiology·T Kööbi
Apr 17, 2007·CJEM·Sonia Johnson, Sean O Henderson

❮ Previous
Next ❯

Citations

Mar 15, 2019·Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine·D McGregorTim Harris

❮ Previous
Next ❯

Related Concepts

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.