OPEN IN READ APP
JOURNAL ARTICLE

Non-invasive cardiac output assessment in critically ill paediatric patients

Theeranan Wongsirimetheekul, Anant Khositseth, Rojjanee Lertbunrian
Acta Cardiologica 2014, 69 (2): 167-73
24783468

OBJECTIVE: Recently, non-invasive methods for cardiac output (CO) assessment have been developed including the ultrasonic cardiac output monitor (USCOM). This technique uses the same concept as Doppler echocardiography but differs in two aspects including continuous wave (CW) Doppler and estimated outflow tract diameter (OTD) used in USCOM compared to pulsed wave Doppler and directed measurement of OTD used in echocardiography. We sought to assess the agreement between CO assessment by USCOM and echocardiography in critically ill paediatric patients.

METHODS: Paired measurements of CO in critically ill paediatric patients were simultaneously and independently obtained by USCOM and echocardiography. Agreement between OTD, velocity time integral (VTI), CO, and cardiac index (CI) were assessed by percentage error and Bland-Altman analysis.

RESULTS: Thirty-four children (aged 7.86 +/- 5.78years, 44.1% male) had a mean OTD (1.47 +/- 0.38, 1.41 +/- 0.40), VTI (19.13 +/- 6.06, 23.53 +/- 7.31 cm), CO (3.88 +/- 2.19,4.41 +/- 2.83 l/min) and CI (4.23 +/- 1.19,4.77 +/- 1.43 l/min/m2) by echocardiography and USCOM, respectively. Bias +/- precision and percentage of error of OTD, VTI, CO, and CI were -0.07 +/- 0.20 cm, 27.80%; -4.40 +/- 3.84 cm, 31.99%; -0.53 +/- 1.23 l/min, 54.66%; and 0.54 +/- 1.03 l/min/m2, 42.32%, respectively. The bias +/- precision and percentage error were more important in patients with septic shock (n = 16).

CONCLUSION: USCOM was an unreliable tool for absolute value measurement of CO and CI due to the errors of VTI by CW Doppler.

Comments

You need to log in or sign up for an account to be able to comment.

No comments yet, be the first to post one!

Related Papers

Available on the App Store

Available on the Play Store
Remove bar
Read by QxMD icon Read
24783468
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"