You can evaluate the risk and consider your anxiety separately. If you think the risk is worth it, then you can take care of the anxiety with medication. After

You can evaluate the risk and consider your anxiety separately. If you think the risk is worth it, then you can take care of the anxiety with medication. After enough diazepam, you won't be anxious anymore. You won't care. Not only does this help you feel better, but I'm sure a less anxious person is better for the surgery as well.