Reduction of Oxygen Saturation and Increase of Heart Rate in Hospital Workers Wearing Face Mask during Routine Shift

Abstract

Background & Aims : The COVID-19 pandemic forced healthcare workers to use Personal Protective Equipment (PPE) or at least wear gowns, gloves, and face masks during their working shifts. Previous research reports some problems such as headaches and itching due to the new working conditions. The present study was conducted to determine the possible physiological changes related to wearing face masks, in the current ongoing situation, among healthy hospital workers. Materials & Methods: A questionnaire was administered to hospital personnel requesting them to measure their oxygen saturation level (SpO 2 ) and heart beats per minute (BPM) before and after their shifts. They used a pulse oximeter available in their hospital. Eighty-two hospital workers completed their forms, reporting their pre- and post-SpO 2 and BPM measurements. Results : Statistically, the comparison of data (before and after shifts) indicated a significant decrease in SpO 2 (98.68±1.56 versus 97.57±1.76, p<0.01) and an associated significant increase in BPM (82.86±7.21 versus 93.14±5.00, p<0.001). Also, there was no significant difference (p>0.05) between the mentioned responses for those who used N-95 masks (10 persons) and those who used surgical masks (72 persons). Conclusion : Although these changes were all in the reference range for healthy subjects, these fluctuations in the long term can cause physiological and psychological stress among hospital staff during the COVID-19 pandemic.