A212 SLEEP, Volume 41, Abstract Supplement, 2018 that ORP on consecutive nights isn’t systematically different. Arousal/ awakening index (AI) prior to therapy was 27.3 ± 14.7 vs 17.5 ± 5 dur- ing therapy (p=0.0002). ORP9 (an index of arousability) decreased from 0.95 ± 0.26 to 0.87 ± 0.29 (p>0.05). Multiple linear regression analysis revealed a model with major factors being ∆ORP9 and ∆AI (R 2 =0.779). There was no correlation between ∆FOSQ10 or ∆ESS and ∆ORP. Conclusion: The ORP decreases with CPAP therapy in most patients and provides a simple objective measure of improvement of sleep depth and quality. Support (If Any): Financial and in-kind support was provided Cerebra Health Inc and RANA Respiratory Care Group. 0569 SCREENING FOR OBSTRUCTIVE SLEEP APNEA IN PATIENTS WITH ISCHEMIC STROKE AND TRANSIENT ISCHEMIC ATTACK Metzler A 1 , Lindsay D 2 , Irfan M 1 1 Hennepin County Medical Center, minneapolis, MN, 2 Hennepin County Medical Center, Minneapolis, MN Introduction: Sleep related disordered breathing is an independent risk factor for ischemic stroke. Research suggests that treatment of Obstructive Sleep Apnea (OSA) improves neurologic recovery, quality of life, and is integral to secondary prevention of stroke but screening is often overlooked. In this quality improvement project, the aim was to improve OSA screening rates in patients with ischemic stroke or tran- sient ischemic attack (TIA) who were admitted to Hennepin County Medical Center. The objectives were to evaluate baseline documenta- tion of OSA screening in ischemic stroke patients, develop effective protocols to encourage screening, and measure the post intervention rate of screening documentation and resulting sleep referrals. Methods: Two sets of interventions were implemented, in July 2015 and March 2016, including an education session for resident physi- cians, an electronic stroke discharge note template, and email reminders. Retrospective chart review was conducted on ischemic stroke and TIA patients discharged over two consecutive months in 2014, 2015, 2016, and 2017, to collect OSA screening and referral data before and after each intervention, as well as a year later, to assess retention. Surveys were filled out before and after the interventions, to assess physicians’ reported screening practices and behaviors towards the discharge template. Results: The rate of OSA screening in ischemic stroke and TIA patients at discharge increased from baseline 2.4% in 2014 to 24.1% in 2015 fol- lowing intervention. It further increased to 66.0% in 2016 after continued efforts for implementation. After reiteration, in 2017, the OSA screen- ing rate improved to 69.4%. All patients (100%) who screened positive, had a sleep referral ordered at discharge. Physician survey before and after interventions found increase in self-reported screening rate (69% to 100%) and increase in satisfaction with the discharge template. Conclusion: Implementation of an education session, stroke dis- charge note template, and email reminders positively correlated with screening rate and referral to the sleep clinic. The substantial gains, compared to baseline, were retained a year following the interventions. Physician self-reported screening rate and satisfaction with discharge template both increased. Support (If Any): NA. 0570 TAILORED APPROACH TO SLEEP HEALTH EDUCATION (TASHE): PRELIMINARY RESULTS FOR A RANDOMIZED CONTROLLED TRIAL OF A WEB-BASED EDUCATIONAL TOOL TO PROMOTE SELF-EFFICACY FOR OSA DIAGNOSIS AND TREATMENT AMONG BLACKS Robbins R 1 , Allegrante J 2 , Rapoport DM 3 , Senathirajah Y 4 , Rogers A 1 , Williams N 1 , Cohalll A 5 , Butler M 1 , Ogedegbe O 1 , Jean-Louis G 1 1 New York University School of Medicine, New York, NY, 2 Mailman School of Public Health, Columbia University, New York, NY, 3 Department of Internal Medicine, Mount Sinai, New York, NY, 4 Department of Medicine, Northwell Health, New York, NY, 5 Columbia University Medical Center, New York, NY Introduction: Blacks are at higher risk of developing obstructive sleep apnea (OSA), relative to other racial/ethnic groups. Yet, they are less likely to seek evaluation and treatment than their counterparts. In an NHLBI-funded study to promote awareness of OSA among blacks, we designed and evaluated the effect of a tailored, web-based educa- tional intervention. Methods: We conducted a 6-month randomized controlled trial (n=200) of the Tailored Approach to Sleep Health Education (TASHE) versus generic OSA educational materials. The intervention com- prised a web-based tool that incorporated health communication best practices, including message tailoring and narrative storytell- ing designed to promote awareness of OSA. Participants received a pre-programmed tablet providing access to either the TASHE or con- trol website (National Sleep Foundation), and were asked to review the materials weekly. We recruited community-dwelling blacks from barbershops, health centers, and faith-based organizations and rand- omized individuals to TASHE or control. Primary outcomes were sleep hygiene and OSA self-efficacy (risk perception, outcome expectation, treatment efficacy), beliefs and knowledge. Of the sample, 46% were male and average age was 48.8 ± 13.1 years. Effects of the intervention were modeled using linear repeated-measures intent-to-treat mixed effects regression analysis with maximum likelihood estimation. Results: Sleep hygiene increased as a result of exposure to the TASHE intervention by approximately one unit per month, relative to the control group (b=0.95,SE=0.39,p=.015). Compared to the control group, those exposed to TASHE had increased sleep hygiene (5.68 units; 95%CI:1.11–10.25) over the 6-month period. Among the three dimensions of self-efficacy, treatment efficacy increased over time for participants in both groups (b=0.07,SE=0.03,p=.013). No significant changes in OSA beliefs or knowledge were observed. Conclusion: Our study showed the web-based tailored intervention led to improved sleep hygiene for blacks at high OSA risk. Further scale-up and dissemination of this intervention may enable a broader understanding of this approach for addressing health disparity in OSA. Support (If Any): Supported by grants R25HL116378, RO1MD007716 and K07AG052685. 0571 CONTINUOUS POSITIVE AIRWAY PRESSURE TREATMENT ALTERS DIETARY HABITS IN PATIENTS WITH OBSTRUCTIVE SLEEP APNEA Raveendran J 1 , Hynes M 2 , Hunley A 2 , Younes N 3 , Jain V 2 1 The George Washington University School of Medicine and Health Sciences, Washington, DC, 2 The George Washington University Medical Faculty Associates, Washington, DC, 3 The George Washington University Milken Institute School of Public Health, Washington, DC Introduction: Although it has been well-established that obesity is a major risk factor for obstructive sleep apnea (OSA), there is emerging evidence that OSA contributes to obesity. OSA is thought to promote a change in dietary habits in favor of high caloric items, but it is not well-known if this change is reversed with continuous positive airway pressure (CPAP), the current gold standard treatment for OSA. This B. Clinical Sleep Science and Practice II. Sleep-Related Breathing Disorders Downloaded from https://academic.oup.com/sleep/article/41/suppl_1/A212/4988607 by guest on 19 August 2022