Echocardiographic measurement of left ventricular stroke volume in newborn infants: A correlative study with pulsed Doppler and M-mode echocardiography
✍ Scribed by Frans J. Walther; Bijan Siassi; Paul Y. K. Wu
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 447 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0091-2751
No coin nor oath required. For personal study only.
✦ Synopsis
Noninvasive monitoring of stroke volume by pulsed Doppler echocardiog- raphy is an important recent advance in neonatal care. Using this technique, we assessed stroke volume in 112 healthy neonates (birth weight 780-5350 g, menstrual age 27-42 weeks). Stroke volume increased with advancing birth weight (r = +0.93) and gestational age ( r = +0.90). Mean stroke volume per kilogram body weight (1.77 * 0.28 mlkg) was constant throughout the study population. Doppler-derived stroke volumes correlated linearly with left ventricular dimensions in diastole and in systole. Stroke volumes calculated from left ventricular dimensions using the Feigenbaum and Teichholz equations correlated equally well with Doppler-derived stroke volume values (r = +0.76 and +0.77, respectively). Indexing Words: Pulsed Dop- pler echocardiography e Left ventricular stroke volume -M-mode echocardiography a Cardiac output * Newborn infants
Monitoring stroke volume or cardiac output provides important information in the assessment and management of compromised newborn infants. Several investigators have reported values for stroke volumes in and children6-' that were derived from noninvasive M-mode measurements of the left ventricular diastolic and systolic dimensions and showed a significant correlation between angiocardiographic and echocardiographic estimates of left ventricular volumes. These studies, however, provide little information about newborn infants.
Pulsed Doppler echocardiography is an important recent advance and provides excellent quantitative measurements of cardiac output in comparison with values determined according to the Fick principle." Using the pulsed Doppler technique, we measured stroke volume (SV) in 50 healthy premature and 62 term newborn infants and studied the correlation of left ventricular di-From the Neonatology Division,