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Background:The natural history of gallstone formation after bariatric surgery, the incidence of symptomatic gallstones, and timing of cholecystectomy are not well established.This research is being done to bring awareness to one particular postoperative consequence of bariatric surgery: gallstone development. Methods:This study was retrospective cross-sectional study to achieve the objectives of the study. A cross-sectional study because of the capture information based on data gathered for a specific point in time. Obese population who were surgically managed aby one of the bariatric surgeries. The sampling type was a non-probability convenient sample. Sample size was determined according to 95% confidence level using Epi Info software. Results: Researches filled the questionnaire from 843 participants. Among them, 15.5% had bariatric surgery (n= 131). Age at time of bariatric surgery was more than 25 years among most of participants. Male to female ratio was almost 1:1 among study participants who underwent bariatric surgery. The mean body mass index among study participants was 39.18 + 11.77 kg/m2 while the median BMI was 40.74 kg/m2. This indicates that most of study participants are morbidly obese. The most frequent type of bariatric surgery was gastrectomy operation (n= 101, 77.1%). There were a number of participants who reported having gallstone after the surgery (n= 24, 18.3%). The timing of gallstone formation varied among study participants Conclusion: The incidence of gallstone formation following bariatric surgery was relatively less that other literature. All of study participants who underwent bariatric surgery reported having complications following the surgery.

Purpose: The timing, schedule, and doses of dexamethasone administration to control edema are a topic of debate. This prospective observational study was performed to evaluate the effects of perioperative and intraoperative administration of dexamethasone on the occurrence of edema in patients who underwent rhinoplasty. Methods: This study was conducted at

Introduction: Causeway is providing a road link between travelers from Al-Khobar, Saudi Arabia and Bahrain. The vehicle traffic noise and emissions exhaust at Causeway have a significant effect on air quality parameters which leads to deteriorations impact on health of employees and passengers. The present study aimed to analyze the ambient air pollutants PM10, PM2.5, PM1, O 3 , CO 2 , SO 2 , CO, VOCs, and NO 2 , ambient noise and heat stress in and around causeway. Materials and Methods: All gaseous, particulate air pollutants, meteorological factors, ambient noise and heat stress were analyzed using standards calibrated equipment. July 2019 to October 2019 the study incused seven administrative sites in King Fahd causeway (Saudi Side). Air Quality Index (AQI) was used to determine the concentrations of selected ambient air pollutants. Results: All major air pollutants were high and significant difference in the concentration level between weekdays and weekends (p<0.05) and exceeds the international air quality guidelines in the selected studied sites of causeways. However, ambient noise demonstrated high significant levels in different studied sites in different times (p<0.05). Conclusion: Air quality measures in Causeway are significantly deteriorated and should be continuously evaluated to minimize the risk of daily exposure to traffic emissions.