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Title: Sleep Disordered Breathing in Hospitalized African-Americans.
Author: Rives-Sanchez M, Quintos A, Prillaman B, Willes L, Swaminathan N, Niroula A, Alqsous N, Sharma S.
Journal: J Natl Med Assoc; 2020 Jun; 112(3):262-267. PubMed ID: 32305125.
Abstract:
RATIONALE: Sleep-disordered breathing (SDB) is a common disorder in general population, with higher prevalence in population with comorbid cardiovascular disease, and yet it remains frequently undiagnosed. Prior published data show that hospitalized obese patients have a high incidence of unrecognized SDB. However, limited data exists on the incidence, prevalence, and impact of SDB in hospitalized obese African-American (AA) patients. This study was performed to better understand the burden of undiagnosed SDB in hospitalized AA patients and its implications on readmission. METHODS: A total of 1243 consecutive obese AA patients admitted to medical or telemetry service were screened utilizing a screening questionnaire (STOP/STOPBANG) from October 2016 to October 2017. If the results of the screening questionnaire were positive, the patients were offered inpatient testing with either High Resolution Pulse Oximetry (HRPO), or a type 3 portable monitor (PM). SDB was suspected if the Oxygen Desaturation Index (ODI) or Apnea Hypopnea Index (AHI) ≥ 5. We collected 30-day readmission and emergency department (ED) visit data on all patients and requested a formal outpatient sleep study for patients identified as SDB positive. RESULTS: Of the 1243 AA patients screened, 852 (68.5%) patients screened positive for SDB. Of these high-risk screens, 538 (63.1%) patients underwent inpatient testing with either High Resolution Pulse Oximetry (HRPO) or PM. Of these 538 patients, 319 (59.3%) were found to have suspected obstructive sleep apnea (OSA) based on ODI/AHI >5. Mild SDB (AHI 5-14) was present in 149 (46.7%) patients; moderate (AHI 15-29) in 74 (23.2%) patients; and severe (AHI >30) in 96 (30.1%) patients. The patients with suspected SDB were educated and encouraged to get an out-patient polysomnogram (PSG) but only 32 (10.0%) returned to undergo a formal PSG. The 30-day readmission rate/ED visits for patient with SDB was 13.5% compared to 13.7% of patients without SDB. CONCLUSION: This is the largest SDB registry that included obese hospitalized AA patients in a tertiary care academic center and reveals a high prevalence of undiagnosed SDB in this cohort. Despite proactive screening and patient education only 3.8% (32/852) of patients returned post-discharge for formal polysomnography. The presence of SDB did not impact the 30-day readmission rate/ED visit rate in this cohort.

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