The epidemiological characteristics of sleep disordered breathing in congestive heart failure: A prospective, single centre study in Southeast Asia

Author:

Lourdesamy Anthony Albert Iruthiaraj1ORCID,Abdul Rani Rosilawati2

Affiliation:

1. Respiratory Unit, Hospital Taiping, Ministry of Health Malaysia, Perak, Malaysia

2. Clinical Research Centre, Hospital Taiping, Ministry of Health Malaysia, Perak, Malaysia

Abstract

Background: The presence of sleep-disordered breathing (SDB) in congestive heart failure (CHF) is associated with poor prognosis and is underdiagnosed despite advances in CHF management. The prevalence of SDB in CHF remains understudied in South East Asia. Methods: A prospective, observational single-centre study was conducted where 116 consecutive patients in a specialised heart failure clinic underwent level 1, attended polysomnography (PSG). Results: The prevalence of SDB was 78% using the apnoea-hypopnea index (AHI), AHI ⩾ 5/h threshold, and 59% with the AHI ⩾ 15/h threshold. Obstructive sleep apnoea (OSA) was the predominant type of SDB and was associated with increased body mass index and neck circumference. STOP-BANG was predictive of SDB, especially in men. Central sleep apnoea (CSA) patients had worse sleep indexes and lower awake arterial carbon dioxide. SDB was also homogenously present in preserved ejection fraction (EF) CHF. Conclusion: Most of the CHF patients were found to have SDB with the utility of PSG. Local CHF guidelines should include sleep testing for all patients with CHF. The study is registered on ClinicalTrials.gov (NCT05332223) as ‘The Epidemiological Characteristics of SDB in Patients with Reduced or Preserved EF CHF’.

Publisher

SAGE Publications

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