Post-operative complications are issues that can arise after a surgical procedure. These complications can vary in severity and may include infections, bleeding, or adverse reactions to anesthesia. Patients are monitored closely after surgery to identify any problems early and to ensure proper recovery. Factors that can increase the risk of post-operative complications include the patient's overall health, the type of surgery performed, and adherence to post-operative care instructions. Common preventive measures include proper wound care, following dietary guidelines, and attending follow-up appointments with healthcare providers like surgeons or nurses.