Knowledge and practice of radiation safety among health professionals in Trinidad

Objective: To determine the practices and knowledge of radiation safety measures among health care providers in tertiary institutions in Trinidad. Design & Method: A cross-sectional survey of health care professionals within two public hospitals was conducted using a questionnaire distributed to individuals working in Cardiology, General Surgery, Internal medicine, Orthopaedics, Radiology and Urology who require the use of ionizing radiation machines. The questionnaire comprised of 30 questions divided into five subcategories including demographic data, usage of the ionizing radiation machines, basic knowledge, and attitude towards personal protective equipment as well as radiation exposure measurement. Questionnaire results were tabulated and analysed using Microsoft Excel and Stata v11 with comparative statistical analysis being done using the one-way analysis of variance test. Results: A total of 118 health care professionals participated in this study. The majority (85/118 (72%)) of individuals revealed that they had no formal training regarding safe practices when working with ionizing radiation despite the daily use of the fluoroscopy machines by at least 25% of participants. Individuals who had formal training in the use of ionizing radiation were found to score significantly higher than those without training (p < 0.0001). Participants’ knowledge regarding the proper positioning of the C-arm image intensifier to reduce radiation exposure was low with 46% of individuals providing a correct response. Conclusions: The level of knowledge among the individuals who participate in the operation of ionizing radiation equipment throughout the country is low. The benefit of training in the use of the C-arm image intensifier is highlighted by the revelation that the individuals who had formal training in the use of these machines performed better than those individuals without training. Annual recertification courses should be implemented such that individuals are kept abreast with current changes and reminded of commonly neglected safety practices