Depending on what procedure you will be having, you may need to arrive an hour earlier than your injection and up to two hours earlier than your appointment time for any type of implant. The reason is that an antibiotic must be given in the pre-op area. Once you have been to the operating room for your procedure and admitted into the Recovery Room, you will stay as long as necessary for your vital signs to be stable, pain and nausea are managed if you have any and you meet discharge criteria. Some patients awaken quick and others are slower to awaken. Most patients stay approximately 30 minutes to an hour depending on procedure type.