First, 3.2 is mildly low and not to be overly concerned with. If you are taking any medications that may cause you to lose potassium, then adjusting the medication or easier yet, supplemental potassium intake will solve this issue. you may simply increase your oral intake of food higher in potassium such as bananas, avocado, spinach, acorn squash...etc. You should repeat your potassium level a week before surgery to see if you are closer to the 3.4 level. If not, your surgeon still has time to give you potassium pills if necessary and repeat the exam once more.Best of luck.Dr T