• Dagoberto Ojeda, Mariana Cabezón, Mariela Agurto, Sofía Oviedo, Carlos Vega, Ximena Daza, Beatriz Demetrio, Cecilia Carrasco, and Patricia Cisternas.
• Servicio de Anestesiología, Clínica Dávila, Santiago, Chile.
• Rev Med Chil. 2019 Nov 1; 147 (11): 1415-1422.

AbstractBackground Sun exposure is the main source of 25-hydroxy-vitamin D. Since anesthesiologists work inside operating rooms, they are identified as a deficiency risk group. As medical activity in general occurs indoors, added to the work excess and sedentary lifestyle, physicians in general have low sun exposure. Aim To investigate the determinants of vitamin D levels in physicians. Material and Methods Anesthesiologists and physicians not working in operating rooms were included. A survey that comprised working hours, diet, skin color, sunscreen use and outdoor activities was also applied. Measurements of vitamin D and parathormone levels in blood were performed. Results We analyzed samples from 81 volunteers. Median vitamin D values of the whole sample were in the range of insufficiency (25.3 [interquartile range 12.4] ng/ml). Multiple linear regression analysis detected no differences between anesthesiologists and non-anesthesiologists. A higher body mass index was a risk factor for vitamin D deficiency, (p = 0.025). The only protective factor was the intake of a vitamin D supplement (p < 0.01). Conclusions Anesthesiologists and other specialists were both at risk for vitamin D deficiency. Obesity was a risk factor and the use of a vitamin D supplement was the only protective factor.

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