Atropine is used as pre-anaesthetic medication.
- Ether vapours are too irritant to the respiratory passage when used as
volatile general anaesthetic.
- It causes excessive secretion of mucous in the bronchi, lachrymal glands and nasopharynx. These secretions interfere with normal respiration as well as with the anaesthetic process.
- To overcome this disadvantage of ether, antisecretory agent like atropine is combined with ether.
- Atropine blocks all secretions and assists in anaesthesia.