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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4 Pt 1
|
| pubmed:dateCreated |
1994-8-26
|
| pubmed:abstractText |
To assess the influence of intrauterine growth retardation on heart rate (HR) and HR variability during sleep, we performed polygraphic recordings in 10 small-for-gestational age (SGA) and 16 appropriate-for-gestational age (AGA) newborns. Both groups were clinically and neurologically normal and were at 37 to 41 wk conceptional age. RR intervals were analyzed using the short-time Fourier transform in three frequency bands: 1) high frequency, with a period 3-8 heartbeat; 2) mid frequency, with a period 10-25 heartbeat; and 3) low frequency, with a period 30-100 heartbeat. In both active and quiet sleep, SGA newborns significantly differed from AGA newborns by having a shorter RR interval (p < 0.01) and lower amplitude of HR variability in all bands (p < 0.05) except low frequency in quiet sleep. Quiet sleep differed from active sleep by having a longer RR interval (p < 0.05), higher high-frequency variability (p < 0.02) in both SGA and AGA newborns, and lower low-frequency variability (p < 0.005 for AGA newborns). Our data give evidence of clear modifications of both sympathetic and parasympathetic HR control in the at-risk SGA population. Similarity of between-state characteristics suggests maintained CNS control of HR in SGA as well as in AGA newborns. We speculate that between-group HR and HR variability differences may be related to augmented metabolic rate in SGA compared with AGA newborns.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Apr
|
| pubmed:issn |
0031-3998
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
35
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
500-5
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:8047389-Basal Metabolism,
pubmed-meshheading:8047389-Birth Weight,
pubmed-meshheading:8047389-Female,
pubmed-meshheading:8047389-Fetal Growth Retardation,
pubmed-meshheading:8047389-Gestational Age,
pubmed-meshheading:8047389-Heart Rate,
pubmed-meshheading:8047389-Humans,
pubmed-meshheading:8047389-Hypertension,
pubmed-meshheading:8047389-Infant, Newborn,
pubmed-meshheading:8047389-Infant, Small for Gestational Age,
pubmed-meshheading:8047389-Labetalol,
pubmed-meshheading:8047389-Male,
pubmed-meshheading:8047389-Methyldopa,
pubmed-meshheading:8047389-Pregnancy,
pubmed-meshheading:8047389-Pregnancy Complications, Cardiovascular,
pubmed-meshheading:8047389-Sleep
|
| pubmed:year |
1994
|
| pubmed:articleTitle |
Heart rate and heart rate variability during sleep in small-for-gestational age newborns.
|
| pubmed:affiliation |
INSERM, Hôpital A. Béclère, Clamart, France.
|
| pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
|