Neonatal pulmonary flow pattern--a pulsed Doppler echo study

The pulmonary flow pattern was analysed by pulsed Doppler in 77 normal neonates, at < 48 hours (36 subjects), 49 to 96 hours (25 subjects) and 97 to 148 hours (16 subjects). From the flow velocity spectrum, using an built in computer system, the acceleration time and the ejection time were measur...

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Bibliographic Details
Published inIndian heart journal Vol. 44; no. 3; p. 165
Main Authors Jose, V J, Prabhakaran, P, Kirubakaran, C
Format Journal Article
LanguageEnglish
Published India 01.05.1992
Subjects
Blood Flow Velocity - physiology
Echocardiography, Doppler - instrumentation
Humans
Image Processing, Computer-Assisted - instrumentation
Infant, Newborn - physiology
Lung - blood supply
Pulmonary Artery - diagnostic imaging
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Summary:The pulmonary flow pattern was analysed by pulsed Doppler in 77 normal neonates, at < 48 hours (36 subjects), 49 to 96 hours (25 subjects) and 97 to 148 hours (16 subjects). From the flow velocity spectrum, using an built in computer system, the acceleration time and the ejection time were measured, and the ratio was calculated. This ratio was 0.24 +/- 0.08 in the subjects within 48 hours whereas this ratio was 0.53 +/- 0.11 in the subjects above 97 hours; thus the ratio increased with age. We noticed that the ratio obtained from the pulsed Doppler is useful in assessing the pulmonary vascular status, even in neonates.
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ISSN:0019-4832