During the procedure, you may be given a sedative medication to help you relax, or you may be given a medication that will put you to sleep during the procedure. It is important for you to try to relax and take slow, deep breaths through you nose. Every effort will be made to maintain your comfort and safety. Most patients sleep through the procedure. Your blood pressure, pulse, and oxygen level in your blood will be monitored. The procedure usually takes about 5 to 10 minutes to complete.