Objective: The purpose of this study is to clarify the characteristics of cases where decision-making is difficult and how the medical staff can deal with them in the medical field. Method: Seven oncology physicians were interviewed. The survey items include cases where decision-making is difficult, how to deal with them, and decision support. Category analysis was performed based on verbatim records. Results: First, the cases where decision-making is difficult were divided into two categories: patient factors and environmental factors. The former is further divided into two subcategories: “personal factors” include personality and, intellectual ability and “factors due to diseases and aging” that included flailing of body parts and dementia. Further, there were three categories of medical staff’s strategies: assessment, response skills, and environmental approach. Discussion: In providing information to patients, it is necessary to respond according to the patient’s intellectual state environmental factors to promote understanding. Specifically, it is effective to use patient-specific explanations, target planning, and nudges.

Purpose: In today’s medical field, it is an essential quality competency for staff to not only recognize the importance of patient decision-making and the skills to support it, but also implement it. This study aimed to establish a training program on decision support for healthcare professionals and examine its effectiveness. Method: We conducted the training at a medical institution and conducted a questionnaire survey at two points before and after the training. A total of 88 nurses and doctors participated in the survey. Result: We developed a two-hour training on the knowledge and skills needed for decision support. Questionnaire results showed improvements in literacy and efficacy before and after the training. Discussion: It was confirmed that the training led to an in-depth understanding of the participants’ decision support, and increased the sense of efficacy in their daily work, particularly through responding to patients according to patients’ cognitive and physical assessments, and in actively supporting those who have difficulty in making decisions. There were references to the significance of re-learning and the possibility of applying the training to difficult situations in participants comments. In the future, it is necessary to study decision support with reference toco-operation in the medical field where collaboration among multiple professions is indispensable.