Cited by 152Obstructive Sleep Apnea ResearchSleep and related disordersNeuroscience of respiration and sleep

Prevalence of sleep apnea and electrocardiographic disturbances in morbidly obese patients

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Valencia‐Flores, Matilde, Orea, Arturo, Castaño, Violeta A., Resendiz, Montserrat, Rosales, María, Rebollar, Verónica, Santiago, Victoria, Gallegos, José +5 more·2000·Obesity Research

Abstract

OBJECTIVE: To determine the prevalence of sleep apnea in morbidly obese patients and its relationship with cardiac arrhythmias. RESEARCH METHODS AND PROCEDURES: Fifty-two consecutive morbidly obese (body mass index > or = 40 kg/m2) outpatients from the Obesity Clinic of the National Institute of Nutrition Salvador Zubirán underwent two nights of polysomnography with standard laboratory techniques. Electrocardiographic polysomnography signals (Lead II) were evaluated by two experienced cardiologists, and sleep complaints were measured with a standard sleep questionnaire (Sleep Disorders Questionnaire). In order to make comparisons between groups with different severities of sleep-disordered breathing, we classified the patients in four groups using the apnea-hypopnea index (AHI): Group 1, AHI 5 < 15 (n = 10); Group 2, AHI 15 < 30 (n = 10); Group 3, AHI 30 < 65 (n = 14); Group 4, AHI > or = 65 (n = 17). RESULTS: A wide range of sleep-disordered breathing, ranging from AHI of 2.5 to 128.9 was found. Ninety-eight percent of the sample (n = 51) had an AHI > or = 5 (mean = 51 +/- 37), and 33% had severe sleep apnea with AHI > or = 65 with a mean nocturnal desaturation time of <65% over 135 minutes. Electrocardiographic abnormalities were present in 31% of the patients. Cardiac rhythm alterations showed an association with the level of sleep-disordered breathing and oxygen desaturation. DISCUSSION: We conclude that there is a high prevalence of sleep apnea in morbidly obese patients and that the risk for cardiac arrhythmias increases in this population in the presence of a severe sleep apnea (AHI > or = 65) with severe oxygen desaturation (SaO2 < or = 65%).

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Authors
Valencia‐Flores, M., Orea, A., Castaño, V. A., Resendiz, M., Rosales, M., Rebollar, V., Santiago, V., Gallegos, J., Campos, R. M., González, J., Oseguera, J., García‐Ramos, G., & Bliwise, D. L.
Affiliations
Emory University (US)
Corresponding author
Valencia‐Flores, Matilde
Venue
Obesity Research
Publisher
Wiley
Published
2000-05
Volume
8
Issue
3
Pages
262-269
ISSN
  • 1071-7323 (ISSN-L)
  • 1550-8528
OpenAlex
W2061757992
Cited by
152
References
29
Citations by year
2026: 1 · 2025: 1 · 2024: 5 · 2023: 2 · 2022: 5 · 2021: 5 · 2020: 6 · 2019: 7 · 2018: 5 · 2017: 7 · 2016: 6 · 2015: 11 · 2014: 6 · 2013: 8 · 2012: 14
FWCI
1.84
Type
journal article
Language
en
Open access
Locations
  • Obesity Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Universidad Nacional Autónoma de México
  • National Institutes of Health (5r01ag010643-09)
  • Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México
  • National Institute on Aging (AG10643)
Topics
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
Keywords
sleep apnea, morbid obesity, cardiac arrhythmias, electrocardiographic abnormalities, sleep-disordered breathing, apnea-hypopnea index, nocturnal hypoxemia, prevalence, polysomnography
MeSH terms
Adult, Arrhythmias, Cardiac, Electrocardiography, Female, Humans, Male, Obesity, Morbid, Surveys and Questionnaires, Body Mass Index, Prevalence, Polysomnography, Sleep Apnea, Obstructive

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