general anaesthesia

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general anaesthesia

A state of unconsciousness and immobility, brought about by drugs, so as to allow surgical operations or other physical procedures to be performed without pain or awareness. Deep levels of unconsciousness, formerly necessary to achieve the required degree of muscle relaxation, are no longer used. Light anaesthesia, associated with the use of drugs to relax muscles and prevent pain, shock and autonomic disturbance, is now standard.

The action of general anaesthetic drugs is now better understood. Pain responses are suppressed primarily at spinal cord level; hypnosis and amnesia are mediated by the brain. These drugs are now believed to operate on ion channels in nerve cells by binding directly to the protein sites. Different anaesthetic drugs bind specifically to different ion channels.

References in periodicals archive ?
Key players of the global general anaesthesia drugs market such as: Baxter International Inc.
Before the ban is implemented, there will be increased regulation of dental surgeries where general anaesthesia can be used.
A Government review has now recommended that general anaesthesia for dental treatment should only be administered in hospital by January 2002 in England.
Some scientific reflections on possible fundamental mechanisms of general anaesthesia.
Mr Beckett agreed Darren had been treated by, "a dentist who had five days general anaesthesia experience, an anaesthetist only recently starting general anaesthesia.
This may be done under general anaesthesia (5), local anaesthesia (7,8) or immediately on, or prior to, delivery (6).
General anaesthesia optimises surgical conditions but is not without its risks, especially in a newborn baby.
This report describes a child who had an interscalene catheter (ISC) placed under general anaesthesia with ultrasound guidance.
The second paper referred to in the review article relates to a prospective study of 6,538 patients undergoing general anaesthesia for a variety of procedures, published in 1987 in an orthopaedic journal and authored by orthopaedic surgeons'.
Administering an epidural bolus into an already established epidural catheter that is working effectively can allow a decision-to-delivery interval almost as short as general anaesthesia.
Regional block before or after induction of general anaesthesia.
On the other hand, there have been a few case reports suggesting that perioperative continuation of TCA therapy may contribute to the occurrence of severe and refractory hypotension during general anaesthesia (5-7).

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