0915 Actual Condition Survey of Obstructive Respiratory Events in Convalescent Post-stroke Patients with Dysphagia

Abstract Introduction Sleep related breathing disorder is one of the risk factors for stroke. In addition, post-stroke patients often have dysphagia. Although sleep related breathing disorder and dysphagia occur in the oropharyngeal region, their relationship is not well defined and understudied, especially during the recovery phase. This study investigated the oral intake level and obstructive respiratory events in post-stroke patients with dysphagia. Methods Seventy post-stroke patients (36 men; mean age ± S.D., 72.1 ± 11.1) who were hospitalized in a rehabilitation hospital between August 2021 and October 2023 were recruited for this study. Age, sex, body height, body weight, and scores of the functional oral intake scale (FOIS) were collected from their medical record. The body mass index (BMI) was calculated from their height and weight. FOIS was used to evaluate swallowing function. The apnea hypopnea index (AHI), 3% oxygen desaturation index (3%ODI), minimum oxygen saturation (min SpO2) was assessed to evaluate the severity of obstructive respiratory events using WatchPAT (Philips Japan, Ltd.), a portable device to test to diagnose sleep related breathing disorder. In the statistical analysis, we classified the FOIS into three groups: 7 points (no dysphagia), 6,5,4 points (ingestion of texture-modified diet), and 3,2,1 point (mainly feeding through tube). And Kruskal Wallis test was performed on AHI, 3%ODI, minSpO2. Results We obtained approval from our ethical committee before starting this study. According to the analysis, there was a significant difference between the groups in FOIS, AHI and min SpO2 (p 0.05). Conclusion We showed that poorer oral intake was associated with worse obstructive respiratory events. Our results suggest that clinicians should pay attention to sleep related breathing disorder in post-stroke dysphagia patients in rehabilitation hospitals, also to prevent stroke recurrence. Support (if any)