摘要
目的比较早产儿与足月儿心血管功能近日节律的特征。方法连续48h检测早产与足月新生儿的血压(BP);通过彩色Doppler检测主动脉平均血流速度(ABV)、血流加速度(ABA)和射血距离(ASD)。利用余弦法分析以上指标的近日节律特点。结果大多数足月儿心血管功能指标,包括:BP、ABV、ABA和ASD均呈现近日节律,相反仅有少部分早产儿的心血管指标呈现近日节律。而足月儿和早产儿心血管指标的中值均没有显著差异。结论早产儿心脏功能本身与足月儿没有明显差异,但心血管功能的节律性尚未完全形成。
Objective To compare the characters of circadian rhythm of the cardiovascular function between full-term and premature infants. Methods Blood pressure (BP), aortic blood velocity (ABV), aortic blood acceleration (ABA) and aortic strok distance (ASD) were continuously measured in full-term and premature infants for 48 h. Each time series was analyzed with 24-hour cosine curve-fitting method. Results The parameters of cardiovascular function in most of the full-term infants, including BP, ABV, ABA and ASD showed robust circadian rhythm, but most of premature infants did not show obvious circadian rhythm. The averages of those parameters were not different in full-term and premature infants, whereas the amplitude were significant different in the two groups. Conclusion It is indicated that the functions of the cardiovascular system was not different in full-term and premature infants, but circadian rhythm of cardiovascular system in premature infants has not perfectly developed.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2008年第4期365-367,共3页
Space Medicine & Medical Engineering
关键词
足月儿
早产儿
近日节律
心血管功能
full-term infant
premature infant
circadian rhythm
cardiovascular function