Background: Health care workers' potential exposure to ionizing radiation has increased. Annual radiation exposure limit for the general public per US Nuclear Regulatory Commission is 100 mrem (1 mSv). The whole-body annual occupational radiation exposure limit is 5,000 mrem (50 mSv). Studies have been done to evaluate patient radiation exposure. To date, there has been no study to evaluate the radiation exposure of trauma team members or evaluate their behaviors and attitudes.
Methods: Forty primary providers (residents, physician assistants) rotating on the trauma service at an American College of Surgeons Level 1 trauma center participated. Dosimeters were worn by participants, and the radiation doses were measured monthly. A survey detailing the frequency of involvement in radiographic studies, use of protective equipment, and knowledge of education programs was completed monthly.
Results: The range of radiation measured was 1 mrem to 56 mrem, with an average effective dose of 10 mrem per month. Thirty-two (80%) of 40 reported daily exposure to x-rays and 28 (70%) of 40 to computed tomographic scans. Thirty-four (85%) of 40 reported that they never or seldom wore lead apron in trauma bay as opposed to 1 (3%) of 40 who failed to wear it during fluoroscopy. Twenty (50%) reported that an apron was not available, while 20 (50%) reported that it was too hot or did not fit. Thirty-nine (97%) of 40 reported that they received training in radiation safety.
Conclusion: Despite inconsistent use of protective equipment by resident staff, the actual radiation exposure remains low. Hospitals should be sure lead aprons and collars are available. Additional education concerning the availability of programs during pregnancy is needed.
Level of evidence: Epidemiologic study, level III.