Effect of Hypotensive Anesthesia on the Perfusion Index

Massimo is a newly introduced device which can measure the peripheral organ perfusion and expressed it as perfusion index(PI).

Nitroglycerin is a drug used as an hypotensive agent through its vasodilation effect on veins

Labetalol is an antagonist of adrenergic receptors (a1, b1, b2) which is used as an hypotensive inducer. This drug targets the beta receptors 5 to 10 times more specific than alpha receptors so that minor tachycardia happens