Risks and sequele of general anaesthetic
Advancement of techniques and drugs reduced the risk of complications or unpleasant experience like nausea or vomit. Nevertheless, each patient is instructed to observe strict fast few hours before surgery to avoid aspiration of food in the lungs. The introduction of a breathing tube into the trachea (intubation) or into the throat (laryngeal mask) to allow breathing during the anesthesia can cause a sore throats or temporary hoarseness. If you have dental prosthesis or pathology in your mouth tell you anesthetist to avoid broken teeth or any possible damage during intubation. There can be a painful red blotch around the vein into which the drugs have been injected but this usually resolves within a few days. When you lay down on the operating bed for few hours your body will be well padded because your muscle will be relaxed and you will not be able to move. Sometimes, a long operating time may cause minor compression in certain nerves, which can lead to numbness, or, in exceptional cases partial paralysis of an arm or a leg. In most cases, the numbness (paresthesia) resolves within a few days. Temporary amnesia or a decrease in the ability to concentrate can occur for a few hours after the anesthesia. Unforeseeable life-threatening complications such as a serious allergic reaction, heart failure, pulmonary embolus or asphyxia are extremely rare (occurring in 1:250000 people).