AIM: To establish reference ranges for cardiac dimensions and Doppler measurements in preterm infants. METHODS: 79 infants of less than 34 weeks' gestation were examined by echocardiography on days 0, 7, and 28 after birth, to produce a set of reference ranges and to examine changes in these indices over the first month of life. The following dimensions were measured: interventricular septum, left ventricular posterior wall, left interventricular diameter at end systole and diastole, left atrium, and aortic root; Doppler measurements were made of maximum blood flow velocity (Vmax) through the pulmonary, aortic, mitral, and tricuspid valves. RESULTS: Reference ranges are given. Cardiac dimensions correlated well with gestation and birth weight but Vmax did not. There was a significant increase in measurements over time. The "normal" preterm infant also appeared to often have asymmetrical septal hypertrophy. Antenatal dexamethasone administration did not appear to affect the measurements. CONCLUSIONS: There is a close correlation with both gestation and birth weight for all physical measurements. Echocardiograms in preterm babies clearly differ from those in older children and adults.
AIM: To establish reference ranges for cardiac dimensions and Doppler measurements in preterm infants. METHODS: 79 infants of less than 34 weeks' gestation were examined by echocardiography on days 0, 7, and 28 after birth, to produce a set of reference ranges and to examine changes in these indices over the first month of life. The following dimensions were measured: interventricular septum, left ventricular posterior wall, left interventricular diameter at end systole and diastole, left atrium, and aortic root; Doppler measurements were made of maximum blood flow velocity (Vmax) through the pulmonary, aortic, mitral, and tricuspid valves. RESULTS: Reference ranges are given. Cardiac dimensions correlated well with gestation and birth weight but Vmax did not. There was a significant increase in measurements over time. The "normal" preterm infant also appeared to often have asymmetrical septal hypertrophy. Antenatal dexamethasone administration did not appear to affect the measurements. CONCLUSIONS: There is a close correlation with both gestation and birth weight for all physical measurements. Echocardiograms in preterm babies clearly differ from those in older children and adults.
Authors: W L Henry; A DeMaria; R Gramiak; D L King; J A Kisslo; R L Popp; D J Sahn; N B Schiller; A Tajik; L E Teichholz; A E Weyman Journal: Circulation Date: 1980-08 Impact factor: 29.690
Authors: Allard E van Ark; Mirella C Molenschot; Maria H Wesseling; Willem B de Vries; Jan L M Strengers; Arthur Adams; Johannes M P J Breur Journal: Neonatology Date: 2018-06-25 Impact factor: 4.035
Authors: L F J Mildenhall; M R Battin; S M B Morton; C Bevan; C A Kuschel; J E Harding Journal: Arch Dis Child Fetal Neonatal Ed Date: 2005-09-20 Impact factor: 5.747
Authors: Swati Choudhry; Amber Salter; Tyler W Cunningham; Philip T Levy; Hoang H Nguyen; Michael Wallendorf; Gautam K Singh; Mark C Johnson Journal: J Am Soc Echocardiogr Date: 2017-06-07 Impact factor: 5.251