Carbon dioxide Laser Vaporization for Treatment of HPV Infection Carbon dioxide laser vaporization is an effective method for treatment of HPV-related anogenital warts and carcinoma. This procedure is feasibly conducted in outpatient department. The patient is under regional or general anesthesia. When anesthesia wears off, patients report immense discomfort in the initial 24 hours. In order to manage post-procedure pain, clinicians recommend narcotic analgesia.