[Capable or incapable of giving consent? Assessing a patient's capacity to consent: Procedures and challenges in daily clinical practice].

Background/objectives: The capacity of patients to give consent (CTC) is an indispensable prerequisite for informed consent to medical measures. When there is doubt about a patient's CTC, careful assessment is therefore required. Despite a broad theoretical discussion about the conception of CTC and possible procedures for its assessment, there is often a lack of orientation towards binding standardized procedural guidelines in everyday clinical practice.