Sérgio Maltês1,2, Gonçalo J L Cunha3,4, Bruno M L Rocha3,4, Renato Guerreiro3,5, Joana Duarte3,5, Rui Morais3,5, Célia Henriques3,5, Catarina Rodrigues3,5,6, Inês Araújo3,5,6, Cândida Fonseca3,5,6. 1. Heart Failure Clinic, Hospital de São Francisco Xavier, Centro Hospitalar de Lisboa Ociental, Lisbon, Portugal. sergiomaltes@campus.ul.pt. 2. Cardiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ociental, Lisboa, Portugal. sergiomaltes@campus.ul.pt. 3. Heart Failure Clinic, Hospital de São Francisco Xavier, Centro Hospitalar de Lisboa Ociental, Lisbon, Portugal. 4. Cardiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ociental, Lisboa, Portugal. 5. Internal Medicine Department, Serviço de Medicina Interna, Hospital de São Francisco Xavier, Centro Hospitalar de Lisboa Ociental, Estrada do Forte do Alto Duque, 1449-005, Lisbon, Portugal. 6. NOVA Medical School, Faculdade de Ciências Médicas da, Universidade Nova de Lisboa, Lisboa, Portugal.
Abstract
BACKGROUND: Sleep-disordered breathing (SDB) is prevalent in heart failure (HF). Yet, scarce data exist on sleep-patterns in acute HF and differences in specific subgroups. Our goal was to assess SDB prevalence in hospitalized patients with decompensated HF across the entire spectrum of left ventricle ejection fraction (LVEF). METHODS: Single-center retrospective study enrolling patients admitted for acute HF between 2013 and 2018. All patients were screened for SDB with an ApneaLink™ Plus device before discharge while euvolemic and receiving oral therapy. Those with a sleep study time < 3 h were excluded. HF with reduced, moderately reduced, and preserved LVEF (HFrEF, HFmrEF, and HFpEF) was defined by a LVEF < 40%, 40-49%, and ≥ 50%, respectively. SDB was defined by an apnea-hypopnea index (AHI) ≥ 5/h. RESULTS: Overall, 221 patients were included (mean age 75 ± 11 years). Seventy-two (33%) had HFrEF, 26 (11%) HFmrEF, and 123 (56%) HFpEF. In total, 176 (80%) met the criteria for mild SDB, while 59% and 38% had an AHI ≥ 15/h or ≥ 30/h, respectively. SDB prevalence was high and similar between HFrEF, HFmrEF, and HFpEF. Yet, SDB was often more severe in HFrEF when compared to HFpEF. HFmrEF had intermediate characteristics, with an AHI closer to HFrEF. CONCLUSION: In a cohort of patients admitted for acute HF, SDB was highly prevalent in all subgroups, including HFmrEF. The pervasiveness and severity of SDB was particularly noted in HFrEF. These findings suggest that routine SDB screening may be warranted following acute HF.
BACKGROUND: Sleep-disordered breathing (SDB) is prevalent in heart failure (HF). Yet, scarce data exist on sleep-patterns in acute HF and differences in specific subgroups. Our goal was to assess SDB prevalence in hospitalized patients with decompensated HF across the entire spectrum of left ventricle ejection fraction (LVEF). METHODS: Single-center retrospective study enrolling patients admitted for acute HF between 2013 and 2018. All patients were screened for SDB with an ApneaLink™ Plus device before discharge while euvolemic and receiving oral therapy. Those with a sleep study time < 3 h were excluded. HF with reduced, moderately reduced, and preserved LVEF (HFrEF, HFmrEF, and HFpEF) was defined by a LVEF < 40%, 40-49%, and ≥ 50%, respectively. SDB was defined by an apnea-hypopnea index (AHI) ≥ 5/h. RESULTS: Overall, 221 patients were included (mean age 75 ± 11 years). Seventy-two (33%) had HFrEF, 26 (11%) HFmrEF, and 123 (56%) HFpEF. In total, 176 (80%) met the criteria for mild SDB, while 59% and 38% had an AHI ≥ 15/h or ≥ 30/h, respectively. SDB prevalence was high and similar between HFrEF, HFmrEF, and HFpEF. Yet, SDB was often more severe in HFrEF when compared to HFpEF. HFmrEF had intermediate characteristics, with an AHI closer to HFrEF. CONCLUSION: In a cohort of patients admitted for acute HF, SDB was highly prevalent in all subgroups, including HFmrEF. The pervasiveness and severity of SDB was particularly noted in HFrEF. These findings suggest that routine SDB screening may be warranted following acute HF.
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