atropine preanesthetic medication -to reduce the

amount of secretion and to prevent excessive
vagal tone due to anesthesia.

Atropine is commonly used as a preanesthetic medication to help reduce the amount of secretions in the respiratory tract, such as saliva and mucus, which can lead to complications during anesthesia. It also helps to prevent excessive vagal tone, which can cause a decrease in heart rate and blood pressure during anesthesia.

By blocking the effects of acetylcholine, a neurotransmitter that is responsible for stimulating secretions and regulating vagal tone, atropine helps to maintain a stable cardiovascular and respiratory function during surgery. It is particularly useful in patients who are at risk of respiratory complications or have excessive secretions.

Overall, atropine as a preanesthetic medication helps to create a more controlled and stable environment for anesthesia, reducing the risk of complications and ensuring the safety of the patient during surgery.