Effect of smoking habits on sleep

Effect of smoking habits on sleep

Author Conway, Silvia Goncalves Autor UNIFESP Google Scholar
Roizenblatt, Suely Autor UNIFESP Google Scholar
Palombini, Luciana Autor UNIFESP Google Scholar
Castro, Laura de Siqueira Autor UNIFESP Google Scholar
Bittencourt, Lia Rita Azeredo Autor UNIFESP Google Scholar
Silva, Rogério Santos Autor UNIFESP Google Scholar
Tufik, Sergio Autor UNIFESP Google Scholar
Institution Instituto do Sono - Associação Fundo de Incentivo à Psicofarmacologia
Universidade Federal de São Paulo (UNIFESP)
Abstract To evaluate the effect of smoking habits on sleep, data from 1492 adults referred to the Sleep Institute were accessed and divided into 3 categories of smoking status: current, former and non-smokers. Categories of pack-years (<15 and ≥15) defined smoking severity. The association of smoking status and smoking severity with sleep was analyzed for sleep parameters, especially apnea and hypopnea index (AHI) ≥5, more than 5% of total sleep time (TST) spent with oxyhemoglobin saturation (SaO2) <90%, and arousal index. The arousal index was higher among current (21 ± 17) and former smokers (20 ± 17) than non-smokers (17 ± 15; P < 0.04). Former smokers had a higher percent of TST at SaO2 <90% than non-smokers (9 ± 18 vs 6 ± 13; P < 0.04). Former smokers with pack-years ≥15 compared to <15 exhibited higher AHI (22 ± 24 vs 16 ± 21; P < 0.05) and arousal index (22 ± 19 vs 18 ± 15; P < 0.05). Current smokers with pack-years ≥15 compared to <15 exhibited higher arousal index (23 ± 18 vs 18 ± 16; P < 0.05) and percent of TST at SaO2 <90% (11 ± 17 vs 6 ± 13; P < 0.05). Smoking status and pack-years were not associated with AHI ≥5 on logistic regression analysis, but current smokers with pack-years ≥15 were 1.9 times more likely to spend more than 5% of TST at SaO2 <90% than non-smokers (95%CI = 1.21-2.97; P = 0.005). The variability of arousal index was influenced by gender, AHI and current smokers with pack-years ≥15 (all P < 0.01). Smoking habits seem to be associated with arousal and oxyhemoglobin desaturation during sleep, but not with AHI. The effect was more pronounced in current than former smokers.
Keywords Smoking
Smoking cessation
Sleep-disordered breathing
Language English
Date 2008-08-01
Published in Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 41, n. 8, p. 722-727, 2008.
ISSN 0100-879X (Sherpa/Romeo, impact factor)
Publisher Associação Brasileira de Divulgação Científica
Extent 722-727
Origin http://dx.doi.org/10.1590/S0100-879X2008000800014
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000259282600014
SciELO ID S0100-879X2008000800014 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/4487

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