Abstract
The purpose of this study is to evaluate the need for prophylactic antibiotic treatment prior to combined intracavitary and interstitial (hybrid) brachytherapy for gynecologic cancer. A total of 105 gynecologic cancer patients received 405 brachytherapy sessions, including 302 sessions of intracavitary brachytherapy and 103 sessions of hybrid brachytherapy. Prophylactic antibiotics were administered before 35% of the hybrid brachytherapy sessions. The incidence of postbrachytherapy fever and the frequency of subsequent antibiotic use for infection were compared between treatment groups. Among patients treated with hybrid brachytherapy, fever ≥37.5°C occurred in 16.4% of those not receiving prophylactic antibiotics and 16.7% of those receiving prophylactic antibiotics (P > 0.05). Similarly, fever ≥38.0°C occurred in 4.9% of patients not receiving prophylactic antibiotics and 2.4% of those receiving prophylactic antibiotics (P > 0.05). Additional antibiotics were used to treat postbrachytherapy infections in 4.8% of the group receiving prophylactic antibiotics and 0% of those not receiving prophylactic antibiotics, again without statistically significant difference. There were also no significant differences in posttreatment fever incidence and antibiotics use for infection between intracavitary brachytherapy and hybrid brachytherapy sessions. In conclusion, the incidences of infection and fever are low following hybrid brachytherapy, so prophylactic antibiotics are generally unnecessary.
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