Review article: Non-invasive assessment of cardiac output with portable continuous-wave Doppler ultrasound.
Cardiac output is considered an important parameter when assessing the cardiovascular status of a critically ill patient. Both non-invasive (e.g. bioimpedance, echocardiography) and invasive methods (Swan Ganz catheter) have been used to measure cardiac output. The ultrasonic cardiac output monitoring device provides a new method of non-invasively assessing cardiac output in various clinical settings. The ultrasonic cardiac output monitoring device was introduced clinically in 2001, and appears to be a promising adjunct in the assessment of the cardiovascular state in a variety of patient cohorts. In this short review article, we will introduce this new technique, discuss the required skills and compare it with methods already in use. In particular, a critical comparison with the 'gold standard', the invasive measurement of cardiac output with the pulmonary artery catheter, will be given.
Meyer
Sascha
S
Centre for Newborn Care, The Canberra Hospital and The Australian National University Medical School, Canberra, Australian Capital Territory, Australia. saschameyer69@hotmail.com
Todd
David
D
Wright
Ian
I
Gortner
Ludwig
L
Reynolds
Graham
G
D002302:Cardiac Output; D002407:Catheterization, Swan-Ganz / Q000295:instrumentation*; D015150:Echocardiography, Doppler / Q000295:instrumentation*; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation