Document Detail

Determination of cardiac reserve in preterm infants.
MedLine Citation:
PMID:  21980813     Owner:  NLM     Status:  In-Process    
We aimed in this study to determine the cardiac reserve in preterm infants with phonocardiogram. One hundred and fifty-four preterm infants participated in this study. The ratio of the first heart sound to the second heart sound (S1/S2), the ratio of diastolic to systolic duration (D/S) and the cardiac contractility change trend after stimulation (CCCTS) were measured in all infants. The preterm neonatal S1/S2 decreased with increasing gestational age, but the differences between each gestational stage were not significant (p > 0.05), while the D/S significantly increased with increasing gestational age (p < 0.05). After crying induced by vaccination, the D/S was significantly lower than that in quiet state at each gestational stage (p < 0.05). The CCCTS increased with increasing gestational weeks, but the differences between each gestational stage were not significant (p > 0.05).
Xiao Yang; Weiyue Zeng
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Turkish journal of pediatrics     Volume:  53     ISSN:  0041-4301     ISO Abbreviation:  Turk. J. Pediatr.     Publication Date:    2011 May-Jun
Date Detail:
Created Date:  2011-10-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0417505     Medline TA:  Turk J Pediatr     Country:  Turkey    
Other Details:
Languages:  eng     Pagination:  308-13     Citation Subset:  IM    
Department of Obstetrics and Gynecology, West China Second Hospital of Sichuan University, Chengdu, Sichuan Province, China.
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