Cited by 166Obstructive Sleep Apnea ResearchCardiovascular Function and Risk FactorsPulmonary Hypertension Research and Treatments

Left Ventricular Hypertrophy Is a Common Echocardiographic Abnormality in Severe Obstructive Sleep Apnea and Reverses With Nasal Continuous Positive Airway Pressure*

Cloward, Tom V., Walker, James M., Farney, Robert J., Anderson, Jeffrey L.·2003·Chest

Abstract

Study objectives To determine cardiac structural abnormalities by echocardiography in subjects with severe obstructive sleep apnea (OSA), and to determine the long-term effects of nasal continuous positive airway pressure (CPAP) on such abnormalities.Design Polysomnography was conducted on oximetry-screened patients who showed a desaturation index > 40/h and > or = 20% cumulative time spent below 90%. From these, 25 patients with severe OSA but without daytime hypoxemia underwent echocardiography prior to, then 1 month and 6 months following initiation of CPAP treatment.Setting Outpatient sleep disorders center.Results Of the 25 patients, 13 patients (52%) had hypertension by history or on physical examination. Baseline echocardiograms showed that severe OSA was associated with numerous cardiovascular abnormalities, including left ventricular hypertrophy (LVH) [88%], left atrial enlargement (LAE) [64%], right atrial enlargement (RAE) [48%], and right ventricular hypertrophy (16%). In all patients (intent to treat) as well as those patients compliant with CPAP therapy (84% > 3 h nightly), there was a significant reduction in LVH after 6 months of CPAP therapy as measured by interventricular septal distance (baseline diastolic mean, 13.0 mm; 6-month mean after CPAP, 12.3 mm; p < 0.02). RAE and LAE were unchanged after CPAP therapy.Conclusions LVH was present in high frequency in subjects with severe OSA and regressed after 6 months of nasal CPAP therapy.

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Crossref · 10.1378/chest.124.2.594

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  • Use of continuous positive airway pressure at night for 6 mo was associated with a reduction in LV wall thickness.

    “Cloward et al. (55) found that the use of continuous positive airway pressure at night for 6 mo was associated with a reduction in LV wall thickness (55).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [55]

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Authors
Cloward, T. V., Walker, J. M., Farney, R. J., & Anderson, J. L.
Affiliations
  • Intermountain Healthcare (US)
  • University of Utah (US)
Venue
Chest
Publisher
Elsevier BV
Published
2003-08
Volume
124
Issue
2
Pages
594-601
ISSN
0012-3692 (ISSN-L)
OpenAlex
W2011473929
Cited by
166
References
54
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 3 · 2022: 8 · 2021: 6 · 2020: 8 · 2019: 3 · 2018: 4 · 2017: 7 · 2016: 4 · 2015: 13 · 2014: 7 · 2013: 7 · 2012: 6
FWCI
5.17
Type
journal article
Language
en
Open access
closed
Locations
  • CHEST Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Pulmonary Hypertension Research and Treatments
Keywords
left ventricular hypertrophy, obstructive sleep apnea, continuous positive airway pressure, cardiac structural abnormalities, left atrial enlargement, right atrial enlargement, right ventricular hypertrophy, hypertension
MeSH terms
Adult, Aged, Hypoxia, Blood Gas Analysis, Female, Humans, Male, Middle Aged, Positive-Pressure Respiration, Ultrasonography, Polysomnography, Hypertrophy, Left Ventricular, Sleep Apnea, Obstructive

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