Cited by 90Neuroscience of respiration and sleepNeonatal Respiratory Health ResearchPrenatal Substance Exposure Effects

The effect of maternal smoking on respiratory and arousal patterns in preterm infants during sleep

Sawnani, Hemant, Jackson, Tonya, Murphy, Thomas, Beckerman, Robert, Simakajornboon, Narong·2004·American Journal of Respiratory and Critical Care Medicine

Abstract

Prenatal exposure to cigarette smoke is associated with an increased risk of sudden infant death syndrome. The effect of maternal smoking on apnea and arousal patterns in preterm infants is currently unknown. Multichannel polysomnographic studies were performed in preterm infants. Thirty infants were enrolled into the study: 16 exposed prenatally to cigarette smoke (S) and 14 control infants (C). There was no difference in the gestational and postconceptional ages at the time of study. Maternal smoking was associated with a significant increase in the apneic index in these infants (28.6 +/- 6.4/hour [S] vs. 13.2 +/- 3.9 [C]; p<0.05), and the difference was noted for obstructive events and only during active sleep. The arousal index was significantly decreased in the maternal smoking group (34.5 +/- 2.3/hour [S] vs. 46.3 +/- 5.6/hour [C]; p<0.05), with a specific decrease in percentage of arousal after respiratory events (10.7 +/- 2.1% [S] vs. 29.4 +/- 5.4% [C]; p<0.05). In conclusion, preterm infants exposed prenatally to cigarette smoke have increased respiratory events during active sleep, predominantly due to obstructive apnea, and possibly a higher arousal threshold during apneic events. These alterations in respiratory and arousal patterns in preterm infants born to smoking mothers may lead to significant vulnerability in this population.

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Crossref · 10.1164/rccm.200305-692oc

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Authors
Sawnani, H., Jackson, T., Murphy, T., Beckerman, R., & Simakajornboon, N.
Affiliations
Tulane University (US)
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2004-03
Volume
169
Issue
6
Pages
733-738
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W2015038954
Cited by
90
References
54
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 5 · 2020: 5 · 2019: 2 · 2018: 7 · 2017: 2 · 2016: 7 · 2015: 5 · 2014: 4 · 2013: 3 · 2012: 6
FWCI
1.66
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Respiratory and Critical Care Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Center for Research Resources (5 M01-RR-05096-10, M01RR005096)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Neonatal Respiratory Health Research
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
Keywords
maternal smoking, prenatal cigarette smoke exposure, preterm infants, apnea, arousal, obstructive apnea, arousal index, sleep patterns, sudden infant death syndrome, active sleep, arousal threshold
MeSH terms
Apnea, Female, Humans, Infant, Infant, Newborn, Infant, Premature, Pregnancy, Prenatal Exposure Delayed Effects, Sleep, Smoking, Polysomnography, Sleep Arousal Disorders

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