| There is none of the sense of suffocation that was once a feature of general anaesthesia. |
| Two other reports exist of nitrous oxide anaesthesia being used in patients with intraocular gas in a closed eye. |
| It is usually performed as a day case surgical procedure under general anaesthesia. |
| For many years pessaries have been used to treat prolapse, although their use has decreased with advances in anaesthesia and surgical techniques. |
| It is also possible to induce anaesthesia with anaesthetic gases, breathed through a mask. |
| Preoperative haemorrhage and hypotension are contraindications to spinal anaesthesia, and ketamine is used in only severely ill women. |
