1. The document outlines preoperative investigations and assessments that should be performed for patients undergoing surgery based on their age, medical history, type of surgery, and other risk factors. 2. Key details include performing routine tests like urinalysis, ECG, and blood tests; obtaining consent from competent patients; explaining risks of surgery using everyday analogies; and classifying patients' physical health status according to the ASA system. 3. Factors like medical history, likelihood of complications, and seriousness of risks must be considered when determining a patient's fitness for surgery and obtaining their informed consent.

8. In addition to the frequency of the risk, the seriousness must be considered