A pre-op clearance appointment takes 45-60 minutes. Dr. Nazarian reviews your medical records and quizzes you about your lifestyle, health, and any chronic illnesses you’re living with. He completes a physical exam, orders lab testing, and explains how to prepare for surgery. Dr. Nazarian might prescribe medication or provide specific instructions, depending on which surgery you need. For example, if you take blood thinners, you might need to stop in the days before the operation: they can increase the risk of complications, like bleeding and bruising.