Screening questionnaires for sleep-disordered breathing and six-minute walk test in patients attending cardiac rehabilitation

Prevalence, Impact, and Trajectories of Sleep Disturbance in Cardiac Rehabilitation

“…47 Sleep apnea: Participants in CR who are at high versus low risk for sleep apnea have differences in physiological and functional performance measures. Cheung and colleagues 51 compared performance on the 6-min walk test in CR participants considered high versus low risk for sleep apnea based on different screening questionnaires. Differences in distance walked emerged only in those identified as high versus low risk by the Berlin Questionnaire.…”

“…Adjusting for sociodemographic and clinical characteristics, individuals at high risk for sleep apnea walked a significantly shorter distance than those at low risk for sleep apnea. 51 Loo et al 67 compared performance on the 6-min walk test in individuals with and without sleep disordered breathing, enrolled in CR. Individuals without sleep-disordered breathing outperformed those with objectively diagnosed sleep-disordered breathing on the 6-min walk test; however, adjusting for age, sex, and waist circumference, these differences were not statistically significant.…”

“…Differences in distance walked emerged only in those identified as high versus low risk by the Berlin Questionnaire. Adjusting for sociodemographic and clinical characteristics, individuals at high risk for sleep apnea walked a significantly shorter distance than those at low risk for sleep apnea 51. Loo et al67 compared performance on the 6-min walk test in individuals with and without sleep disordered breathing, enrolled in CR.…”

“…Sleep apnea: Estimates from screening questionnaires suggest that somewhere between 37-80% of individuals in CR are at high risk for OSA. [49][50][51] By comparison, studies using objective assessment methods (eg, polysomnography, home sleep apnea testing, ECG Holter) estimate that 40-100% of CR patients have at least mild sleep apnea and 33-85% have at least moderate sleep apnea. 41,[52][53][54][55] Participants in CR also experience higher than normal or excessive daytime sleepiness, a common symptom of sleep apnea.…”