Abstract
Introduction . Magnetic resonance radiation and ultrasound are the most common types of nonionizing radiation (NIR). Existing data on the biological effects of these types of non-ionizing radiation on the cardiovascular system and nervous system are of an ambiguous nature. There are no universal tools for assessing the long-term biological effects of NIR. Aim . To investigate the relationship between heart rate variability indicators and depression among healthcare professionals based on their professional exposure to various types of non-ionizing radiation: ultrasound and magnetic fields. Materials and methods . The study included 60 healthcare workers from magnetic resonance imaging (n=22), ultrasound (n=20) and ophthalmology (n=18) rooms. All medical workers had professional contact only with one type of NIR. The level of depression in all subjects was assessed using the PHQ-9 scale and the heart rate variability (HRV) indicators. Results and discussion . 60% of the medical workers had various levels of depression. In the group of ultrasound room workers, 60% had mild depression and 25% had moderate to severe depression. When assessing intergroup differences using the Mann-Whitney criterion, statistically significant differences were found in depression (p=0.0001) and HF (p=0.001). In conducting multiple multivariate logistic regression (control group – medical staff of ophthalmological rooms), depression lost its significance, and only HF in the group of MRI room medical workers retained statistical significance (p=0.049) Conclusions . Overall, our results demonstrate a high level of depression among medical workers, and HRV serves as an objective indicator reflecting a decrease in vagus nerve tone associated with depression symptoms. Further research is needed to assess the biological effects of ultrasound and radiation from MRI devices on the health of medical workers, which will help develop preventive measures.