Comparison of Four Questionnaires for OSA Screening in China

Study Overview
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Brief Summary
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Background: Obstructive sleep apnea (OSA) refers to the apnea and hypopnea caused by upper airway obstruction during sleep. Patients are associated with sleep disorders, frequent desaturation, hypertension, coronary heart disease, cerebrovascular disease and diabetes. OSA prevalence increased in China in recent years. It is estimated that nearly 80% of men and 93% of women are not diagnosed for moderate and severe OSA. Anesthesiologists and surgeons paid more attention on those high risk patients. The gold standard for OSA diagnosis is apnea and hypopnea index (AHI) obtained from polysomnography (PSG). But it is difficult to carry out PSG regularly in primary health care institutions in China for its high cost and long waiting list. So many OSA questionnaires are developed in Europe and North America, obesity is an important risk factor for OSA for them. But in China people have different anatomical characteristics, the diagnosis sensitivity and specificity of those methods has not been reported in China. Methods and Design: Participants for this study will be recruited in Beijing Tongren Hospital scheduled for elective surgery under general anesthesia. A total of 1200 adult male patients will be enrolled. It is including 3 kinds of persons. 1. To accept PSG monitor in sleep center. 2. To receive OSA correction surgery (UPPP). 3. To receive ophthalmological surgery under general anesthesia. Detailed inquiry and record all medical history. Upper airway assessment will be recorded. Preoperative snoring questionnaires will be integrated according to the four questionnaires. All patients complete PSG monitor. For patients undergoing surgical treatment, postoperative continuous pulse oximetry will be recorded for 24 hours. All postoperative adverse events will be recorded. The primary endpoint: All the patients complete the four snoring questionnaires (ASA, Berlin, STOP and STOP-BANG) before PSG test. The secondary endpoints: PSG monitor will be completed before operation. Medical history, upper airway assessment, postoperative 24 hours continuous pulse oximetry monitor and all perioperative adverse events will be recorded. The purpose is to compare the specificity and sensitivity of four questionnaires to figure out OSA. To find suspected OSA patients before operation with one easy-to-use assessment questionnaire and direct OSA clinical practice.

Official Title
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The Comparison of Different Questionnaires for Preoperative Screening and Perioperative Risk Prediction in Obstructive Sleep Apnea Patients in China

Conditions
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Organic Obstructive Sleep Apnea (Diagnosis), Questionnaire, Chiari Malformation

Intervention / Treatment
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* Diagnostic Test: questionnaires


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adult (18-60ys) Male ASA Ⅰ～Ⅲ grade Applie to receive PSG monitor in sleep center Plan to receive ophthalmological surgery under general anesthesia To accept OSA correction surgery (UPPP) Exclusion Criteria: Severe maxillofacial deformities, pharyngeal reconstruction surgery history ( velopharynoplasty, upper and lower jaw orthopedic surgery, cleft lip and palate surgery) Disturbance of consciousness, no self-control ability, serious mental illness, long-term alcohol abuse, drug abuse Took mental or nervous system drugs within 3 months Sleep apnea caused by hypothyroidism, acromegaly, laryngeal spasm, vocal cord paralysis Epilepsy, neuromuscular disease central sleep apnea Ventilator treatment before monitor for more than 1 month Llliteracy Non-Chinese

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Diagnostic Test: questionnaires|After filled the questionnaires, the patients will receive the PSG monitoring|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Berlin questionnair | The final reports of the questionnaire | From randomization to complete PSG monitor, assessed up to 3 months | 
| ASA Checklist | The final reports of the questionnaire | From randomization to complete PSG monitor, assessed up to 3 months | 
| STOP Questionnaire | The final reports of the questionnaire | From randomization to complete PSG monitor, assessed up to 3 months | 
| STOP-Bang Scoring Model | The final reports of the questionnaire | From randomization to complete PSG monitor, assessed up to 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| PSG monitor | golden standard for OSA diagnosis | on the day of PSG reservation or before operation |