Obstructive sleep apnea is an important predictor of hepatic fibrosis in patients with nonalcoholic fatty liver disease in a tertiary care center.

Abstract:

BACKGROUND:The association of obstructive sleep apnea (OSA) with nonalcoholic fatty liver disease (NAFLD) has only been studied in selected subgroups such as the morbidly obese. We aimed to determine the prevalence and effect of OSA on NAFLD and vice versa in unselected patients attending the outpatient department. METHODS:OSA was diagnosed by polysomnography, done in patients having symptoms of OSA, in patients with NAFLD attending the liver clinic. Polysomnography-proven patients with OSA attending the chest clinic were evaluated for NAFLD by ultrasonography. Anthropometry, liver function tests, metabolic syndrome evaluation and transient elastography were performed in all patients. RESULTS:Three (3%; 95% CI 1.03-8.45%) out of 100 patients with NAFLD (mean age 41 ± 11 years) had symptomatic OSA. Of 23 patients with OSA (mean age 46 ± 12 years,), 3 (13%) had mild, 5 (22%) moderate and 15 (65%) severe OSA. Twenty-one (91.3%; 95% CI 73.2-97.6%) patients with OSA had NAFLD, while raised hepatic transaminase levels were seen in seven (30.4%; 95% CI 15.6-50.9%). Body mass index (OR 1.21, 95% CI 1.02-1.44) and male gender (OR 4.79, 95% CI 1.12-20.48) were significant independent predictors of OSA in NAFLD. The apnea-hypopnea index (OR 1.084, 95% CI 1.002-1.172), a marker of OSA severity, was the only significant independent predictor of significant fibrosis in patients with NAFLD. CONCLUSIONS:Prevalence of symptomatic OSA in patients with NAFLD is low and is predicted by male gender and obesity. Prevalence of NAFLD in patients with OSA is very high. Significant hepatic fibrosis in patients with NAFLD is predicted by OSA independent of obesity and metabolic syndrome.

journal_name

Hepatol Int

journal_title

Hepatology international

authors

Agrawal S,Duseja A,Aggarwal A,Das A,Mehta M,Dhiman RK,Chawla Y

doi

10.1007/s12072-015-9615-3

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

283-91

issue

2

eissn

1936-0533

issn

1936-0541

journal_volume

9

pub_type

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