Patients and Methods
hemorrhagic GIT disease, OSA, apnea, snoring, tiredness, hiatus hernia
OBSTRUCTIVE SLEEP APNEA, SYSTEMIC DISEASE, HIGH BLOOD PRESSURE
This randomized controlled study was conducted at our institution from September 2019 to January 2021. The study was conducted following the declaration of Helsinki and after approval of the institutional review board.Adults with a BMI of ≥ 40 kg/mAll patients underwent the preoperative workup, including complete medical history, clinical evaluation, upper GIT endoscope, routine laboratory investigations, and abdominal sonogram. Patients with previous GIT surgery, congenital, inflammatory, or hemorrhagic GIT disease, hiatus hernia, advanced systemic disease, immunodeficiency, autoimmune connective tissue disorders, or significant mental or neurological conditions were excluded from the study.Informed written consent was obtained from each patient before participation.To assess obstructive sleep apnea (OSA), all patients were asked to complete the STOP-Bang questionnaire, which was developed for a concise OSA screening. It entails eight questions assessing snoring, tiredness, observed apnea, high blood pressure, BMI, age, neck circumference, and male gender. For each question, the patient scores 1 or 0 for “yes” or “no” answers, respectively. Therefore, the total score ranges from 0 to 8. The questionnaire has a high sensitivity using a cutoff score of ≥ 3 to diagnose OSA [