Document Detail


The influence of artificial ventilation on heart rate variability in very preterm infants.
MedLine Citation:
PMID:  7700727     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To study the influence of artificial ventilation rate on neonatal heart rate variability (HRV), ECG and respiratory impedance curves were recorded four times a day in 20 preterm infants (< 33 wk) during the first 3 d after birth while the infants were ventilated at a wide range of ventilator rates. The contents of selected frequency bands within the R-R interval power spectrum were calculated for 3-min periods. Respiratory distress syndrome severity was assessed at each measurement. Respiratory sinus arrhythmia (RSA) induced by the ventilator appeared to mimic spontaneous RSA. As in spontaneous respiration, the amount of RSA (power in a frequency band around the respiratory rate) increases as the ventilation rate decreases. This phenomenon is most probably due to entrainment with baroreflex-related fluctuations in the heart rate. Although the artificial ventilation rate influences RSA and thus high-frequency HRV, an increase in respiratory distress syndrome severity results in a decrease in low-frequency HRV. Thus, the attenuation of low-frequency HRV by respiratory distress syndrome is not likely to be due to artificial ventilation.
Authors:
C M van Ravenswaaij-Arts; J C Hopman; L A Kollée; G B Stoelinga; H P van Geijn
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric research     Volume:  37     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  1995 Jan 
Date Detail:
Created Date:  1995-04-28     Completed Date:  1995-04-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  124-30     Citation Subset:  IM    
Affiliation:
Department of Paediatrics, University Hospital, Nijmegen, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Arrhythmia, Sinus / physiopathology
Female
Heart Rate / physiology*
Humans
Infant, Newborn
Infant, Premature / physiology*
Male
Respiration, Artificial*
Respiratory Distress Syndrome, Newborn / physiopathology,  therapy
Respiratory Mechanics / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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