[Patient safety in primary care and for elderly patients - a case illustrates risks and possible measures].

Safe healthcare means care without preventable harm. Different parts of healthcare face various challenges, with types of harm varying by specialty and context. In primary care, delayed diagnoses dominate serious harm, while in home care settings, challenges often arise from the transfer of information among different caregivers or assistants, thereby increasing the risk of harm from for example medications or complications from catheters, stents, and urinary catheters.