This document provides guidelines for preventing and treating postoperative nausea and vomiting (PONV) in adult inpatients at University Hospital Wishaw. It outlines the Apfel risk assessment scale for predicting PONV risk based on number of risk factors. It recommends prophylactic anti-emetics for medium to high risk patients, including ondansetron, dexamethasone, granisetron, or droperidol. For treatment of ongoing PONV, it recommends ondansetron as first line, cyclizine as second, dexamethasone or prochlorperazine as third, and droperidol as fourth if previous options are ineffective. It provides tips on choosing and repeating anti-e