Wafa Hassan Abdelrahman Mohamed Ahmed2023-03-302023-03-302022http://hdl.handle.net/123456789/19102A Thesis Submitted in Partial fulfillment of Academic Requirements for the degree of Master in Medical PhysiologyABSTRACT: Background: Cardiovascular disease (CVD) is one of the leading causes of death worldwide as reported by the World Health Organization (WHO). Emergency doctors who work 24 hours duty face a high workload and stress that may have an impact on their Cardiovascular health. the aim of the present study is to look at the risk of developing CVD among those doctors by using two validated CVD Risk prediction systems (the QRISK3 calculator and the Ankle-brachial index. Method: A cross-sectional study was conducted over a period of two months using a standardized questionnaire based on the QRISK3 calculator, and handheld Doppler in the measurement of the ankle and brachial systolic pressure for calculating Ankle- brachial index (ABI). Results: the study was conducted among 60 emergency doctors, 52% of them were female and 48% were male, mean age was (29 ±3.8). Ankle-brachial index (ABI) results showed that (15% ) of the participant doctors have an increased risk of developing cardiovascular diseases and (36.7%) of them are Borderline, (ABI) mean was (1.01 ± 0.9). The average relative risk (RR) of developing CVD in the next 10 years was 2.4 and was higher in males than females. Conclusion: there is an increased risk of developing CVD in emergency doctors who work for 24 hours duties than in the general population, according to their QRISK3 total score and Ankle-brachial index (ABI) measurement. Recommendations: we recommend more laboratory investigations and tests to help in understanding and having more information about the effect of the extended working shifts on the Cardiovascular system and general health of the Doctors in the whole area of our country. Keywords: Cardiovascular diseases; QRISK3 calculator, Ankle-brachial index (ABI).CardiovascularThesis