How will surgeons know if i feel pain or i'm awake during general anesthesia? is it true i'm more at risk because i'm underweight (7 stone)?

Not really: The surgeons might not know, but your anesthesia provider will be most likely aware. We monitor your vital signs as well as potentially brain function to figure out the depth of anesthesia. Being awake during general anesthesia is an extremely uncommon event. Being underweight should know increase your risk of awareness.

Heart rate: Your heart rate would increase if you feel pain or if you awaken during surgery. A bis monitor can help monitor for consciousness as well. The surgeon is usually focused on the surgery so the responsibility of your level of conciousness lies upon your anesthesia provider. Talk to your doctors before your procedure and good luck.

You should be : Fully unconscious during a general anesthetic and it is your anesthesiplogist's job to ensure that. There are many signs that we watch for to alert us to the need for more anesthetic long before you are awake, like changes in your vitals, movement, increased ventilation. Your anesthesiologist will help you understand his plan when you have your procedure.

They don't: Your surgeon is performing surgery, and not monitoring pain or wakefulness. Your anesthesia provider, however, by monitoring and assessing your vital signs constantly, can tell if you're waking up or in pain and act accordingly. You are NOT at more risk because of your weight.