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Background: Sentinel events (SEs) can result in severe and unwanted outcomes. To minimize the fear of sentinel events reporting and the occurrence of sentinel events, patient safety culture improvements within healthcare organizations is needed. To our knowledge, limited studies explored the relationships between patient safety culture and sentinel events on a local level and no research has been conducted at the national level in Saudi Arabia., Objectives: This study aimed to explore the relationships between the patient safety culture and the reported-SEs on a national level during the year 2020 in Saudi hospitals., Methods: This was a descriptive study. We utilized two data sources (the reported-SEs and the patient safety culture survey) that were linked using hospitals information. To explore the relationships between patient safety culture and reported-SEs rates, we performed descriptive statistics, a test of independence, post-hoc analysis, correlation analysis, and multivariate regression and stepwise analyses., Results: The highest positive domain scores in patient safety culture domains in the Saudi hospitals (n = 366) were "Teamwork Within Units" (80.65%) and "Organizational learning-continuous improvement" (80.33%), and the lowest were "Staffing" (32.10%) and "Nonpunitive Response to Error" (26.19%). The highest numbers of reported-SEs in 103 hospitals were related to the contributory factors of "Communication and Information" (63.20%) and "Staff Competency and Performance" (61.04%). The correlation analysis performed on 89 Saudi hospitals showed that higher positive patient safety culture scores were significantly associated with lower rates of reported-SEs in 3 out of the 12 domains, which are "Teamwork Within Units", "Communication Openness", and "Handoffs and Transitions". Multivariate analyses showed that "Handoffs and Transitions", "Nonpunitive Response to Error", and "Teamwork Within Units" domains were significant predictors of the number of SEs. The "Staff Competency and Performance" and "Environmental Factors" were the most contributory factors of SEs in the number of significant correlations with the patient safety culture domains., Conclusion: This study identified patient safety culture areas of improvement where hospitals in Saudi Arabia need actions. Our study confirms that a more positive patient safety culture is associated with lower occurrence of sentinel events. To minimize the fear of sentinel events reporting and to improve overall patient safety a culture change is needed by promoting a blame-free culture and improving teamwork, handoffs, and communication openness., (© 2023. The Author(s).)

Building and its environment are in focus owing to health impact attributed to indoor air quality. This study was carried out to assess indoor air quality in terms of particulate matter (PM) and carbon dioxide in a residential building, during COVD-19 pandemic lockdown from March 25 to April 23, 2020, Abha, Saudi Arabia. The PM concentration range for kitchen, bedroom, and hall were 40,000-81000 μg/m 3 (PM 0.3 ), 15,000-26000 μg/m 3 (PM 0.5 ), 4000-6000 μg/m 3 (PM 1 ), 1100-1500 μg/m 3 (PM 2.5 ), 160-247 μg/m 3 (PM 5 ), and 60-95 μg/m 3 (PM 10 ). The results of this study suggest that bedroom needs to be ventilated as CO 2 concentration was reaching 700 ppm during sleep hours. PM concentration was exceeding 300 μg/m 3 (unhealthy) for all particle sizes of PM 0.3 , PM 0.5 , PM 1 , and PM 2.5 except for PM 10 which was also above safe limits (0-50 μg/m 3 ). Also, with influential habit (aromatic smoke), these concentrations increased 2-28 times for PM. The hazard quotient value greater than 1 revealed potential health risk to the inhabitants. Hence, future studies are needed for developing indoor air quality guidelines for residential buildings in Saudi Arabia and better planning and management of energy consumption., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Obesity is a significant public health concern that predisposes individuals to a high risk of premature mortality. Previous studies also reported that low serum concentrations of AMY1 have been associated with obesity. The aimed of the study to assess the relationship between salivary amylase (AMY1) activity and body mass index (BMI) in Saudi male and female adults in Riyadh. This study included a total of 200 (100 individuals who were overweight and obese and 100 who had normal body weight [control individuals]) Saudi participants aged 20 to 50 years old. They were recruited from physical fitness clubs and were school employees in Riyadh City. The dietary food intake was assessed using a 24-hour dietary recall. The activity of the AMY1 was measured using a microplate fluorescence reader. A significant (P ≤ .05) increase was observed in the incidence of hypertension, dyslipidemia, diabetes mellitus (DM), and family history of overweight and obesity in overweight and obese individuals than in the control individuals, and these were in parallel to the significant increase in weight, waist circumference (WC), hip circumference (HC), systolic blood pressure (SBP), diastolic blood pressure (DBP), and BMI. A significant (P ≤ .05) increase was also observed in the carbohydrate and total fat dietary intake of overweight and obese individuals in relation to the respective dietary reference intake (DRI) values. AMY1 activity was significantly lower than the reference values in the overweight and obese group. Furthermore, AMY1 activity was significantly (P ≤ .05) reverse with weight, WC, HC, and BMI in both males and females in the overweight and obese group. In conclusion, the Saudi overweight and obese population seems to be at risk of low AMY1, which correlates with their obesity.