Association of preadmission insomnia symptoms with objective in-hospital sleep and clinical outcomes among hospitalized patients.

STUDY OBJECTIVES: To determine the prevalence of preadmission insomnia symptoms among hospitalized patients and assess the association of insomnia symptoms with objective in-hospital sleep and clinical outcomes. METHODS: We conducted a prospective cohort study of medicine inpatients (age ≥ 50, no previously diagnosed sleep disorders). Participants answered the Insomnia Severity Index (ISI) questionnaire to assess for preadmission insomnia symptoms (scored 0-28; higher scores suggest more insomnia symptoms). Sleep duration and efficiency were measured with actigraphy. Participants self-reported 30-day postdischarge readmissions and emergency department and/or urgent care visits. RESULTS: Of 568 participants, 49% had ISI scores suggestive of possible undiagnosed insomnia (ISI ≥ 8). Higher ISI scores were associated with shorter sleep duration [ß = -2.6, 95% confidence interval (CI) -4.1 to -1.1, P = .001] and lower sleep efficiency (ß = -0.39, 95% CI -0.63 to -0.15, P = .001). When adjusted for age, sex, body mass index, and comorbidities, higher ISI scores were associated with longer length of stay (incidence rate ratio 1.01, 95% CI 1.00-1.02, P = .011), increased risk of 30-day readmission (odds ratio 1.04, 95% CI 1.01-1.07, P = .018), and increased risk of 30-day emergency department or urgent care visit (odds ratio 1.04, 95% CI 1.00-1.07, P = .043). CONCLUSIONS: Among medicine inpatients, there was a high prevalence of preadmission insomnia symptoms suggestive of possible undiagnosed insomnia. Participants with higher ISI scores slept less with lower sleep efficiency during hospitalization. Higher ISI scores were associated with longer length of stay, increased risk of a 30-day postdischarge readmission, and increased risk of a 30-day postdischarge emergency department or urgent care visit. CITATION: Neborak JM, Press VG, Parker WF, et al. Association of preadmission insomnia symptoms with objective in-hospital sleep and clinical outcomes among hospitalized patients. J Clin Sleep Med. 2024;20(5):681-687.

The Overlap of Obesity-Hypoventilation Syndrome and Obstructive Sleep Apnea: How to Treat?

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CPAP Adherence, Mortality, and Progression-Free Survival in Interstitial Lung Disease and OSA.

BACKGROUND: OSA, a common comorbidity in interstitial lung disease (ILD), could contribute to a worsened course if untreated. It is unclear if adherence to CPAP therapy improves outcomes. RESEARCH QUESTION: Does adherence to CPAP therapy improve outcomes in patients with concurrent interstitial lung disease and OSA? STUDY DESIGN AND METHODS: We conducted a 10-year retrospective observational multicenter cohort study, assessing adult patients with ILD who had undergone polysomnography. Subjects were categorized based on OSA severity into no/mild OSA (apnea-hypopnea index score < 15) or moderate/severe OSA (apnea-hypopnea index score ≥ 15). All subjects prescribed and adherent to CPAP were deemed to have treated OSA. Cox regression models were used to examine the association of OSA severity and CPAP adherence with all-cause mortality risk and progression-free survival (PFS). RESULTS: Of 160 subjects that met inclusion criteria, 131 had OSA and were prescribed CPAP. Sixty-six patients (41%) had no/mild untreated OSA, 51 (32%) had moderate/severe untreated OSA, and 43 (27%) had treated OSA. Subjects with no/mild untreated OSA did not differ from those with moderate/severe untreated OSA in mean survival time (127 ± 56 vs 138 ± 93 months, respectively; P = .61) and crude mortality rate (2.9 per 100 person-years vs 2.9 per 100 person-years, respectively; P = .60). Adherence to CPAP was not associated with improvement in all-cause mortality risk (hazard ratio [HR], 1.1; 95% CI, 0.4-2.9; P = .79) or PFS (HR, 0.9; 95% CI, 0.5-1.5; P = .66) compared with those that were nonadherent or untreated. Among subjects requiring supplemental oxygen, those adherent to CPAP had improved PFS (HR, 0.3; 95% CI, 0.1-0.9; P = .03) compared with nonadherent or untreated subjects. INTERPRETATION: Neither OSA severity nor adherence to CPAP was associated with improved outcomes in patients with ILD except those requiring supplemental oxygen.