The impact of an educational video about radiotherapy and its toxicities in head and neck cancer patients. Evaluation of patients' understanding, anxiety, depression, and quality of life.

Objectives: Head and neck radiotherapy can cause several toxicities, and its management has important treatment implications. Proper information about treatment is crucial to assist patients by preparing them and enhancing their ability to manage their illness. Thus, this study aimed to verify the impact of an educational video on the improvement of the patient's understanding, satisfaction, quality of life, and influence on their emotional state in different moments of treatment.

Methods: A 10 min video about head and neck radiotherapy and its toxicities was produced. A prospective randomized clinical trial was performed in two groups: a control group (n = 65), which received standard verbal and written information, and an experimental group (n = 65), which received standard information and the video. Appropriated questionnaires (HADS, UW-QOLv4, IRTU, and Post-RTU) were applied in four different moments in order to evaluate patients' understanding, anxiety, depression, and quality of life.

Results: The video improved the understanding of treatment and its side effects. Also, the video group reported better awareness about oral health care during the treatment. Osteoradionecrosis and radiation-related caries were the most unknown side effects. On the other hand, the educational video did not modify the patients' anxiety, depression, and quality of life. All patients reported high satisfaction with the video.

Conclusions: Audiovisual tools may improve patients' understanding of radiotherapy and were shown to be a useful tool when used in association with verbal and written information in cancer centers. In addition, information about osteoradionecrosis and radiation-related caries must be reinforced to patients.