The incidence of this<unk>  complication is variable and seems to affect 0.2% to 0.4% of patients according to the surgical setting carried out. This variation reflects the surgical setting as well as the physiological state of the patient. Thus, the incidence is 0.2% in general surgery, about 0.4% during caesarean section, between 1 and 2% during cardiac surgery and between 10% and 40% for<unk>  of the traumatized. The majority of these do not feel pain although around one third did, in a range of experience from a sore throat due to the endotracheal tube, to traumatic pain at the incision site. The incidence is halved in the absence of neuro-muscular blockade. The quoted incidences are controversial as many cases of<unk> " are open to interpretation. The incidence of<unk>  is higher and has more serious sequelae when muscle relaxants or neuromuscular-blocking drugs are used. This is because without relaxant the patient will move and the<unk> logist will deepen the<unk> . One study has indicated this phenomenon occurs in about 1 or 2 per 1000 patients or 0.13%. There is conflicting data however as another study suggested it is a rare phenomenon, with an incidence of 0.0068% after review of their data from a patient population of 211,842 patients. Post operative interview by an anesthetist is common practice to elucidate if<unk>  occurred in the case. If<unk>  is reported a case review is immediately performed to identify machine, medication, or operator error.
Anesthesia awareness
Pain tolerance
Neuroscience in space
Neural correlates of consciousness
Theories of general anaesthetic action
Affective sensation
Sense of balance
Sensory phenomena