PNS

Cholinesterase inhibitors

Compounds that prevent the breakdown of acetylcholine (ACh) in the synaptic cleft.

Neuromuscular blocking agents

Medications that block the action of ACh on neuromuscular (Nm) receptors, leading to muscle relaxation during surgery.

Nondepolarizing NMBA

Type of neuromuscular blocking agent that binds tightly to the receptor, preventing depolarization.

Depolarizing NMBA

Type of neuromuscular blocking agent that initially depolarizes the muscle fiber before blocking further depolarization.

Adrenergic Agents

Medications that affect the adrenergic system, leading to effects like stopping bleeding, nasal decongestion, elevation of blood pressure, and mydriasis.

Alpha adrenergic blocking agents

Medications that selectively block alpha receptors, such as Minipress, which lowers blood pressure.

Central acting alpha 2 agonists

Medications like Catapres that act on central alpha 2 receptors, leading to effects on blood pressure regulation but may cause side effects like drowsiness, rebound hypertension, and xerostomia.

Methyldopa

Medication to watch out for due to potential adverse effects like hemolytic anemia and hepatotoxicity, especially in pregnancy.