Abstract :
Introduction: Succinylcholine, is one of the most commonly used muscle relaxant for rapid sequence airway management. It increases the Intraocular pressure (IOP) which is deleterious in open globe injuries. We studied the effects of Inj. dexmedetomidine, a highly selective ?2-adrenoceptor agonist, on IOP and hemodynamic responses to succinylcholine and tracheal intubation.
Materials and Methods: Sixty ASA I–II patients, scheduled for elective non-ophthalmic surgeries requiring general anesthesia were randomly premedicated by intravenous Inj. dexmedetomidine 0.4 µg/kg (Group-D) or saline (Group-S) (30 patients each group). Heart rate (HR), mean arterial pressure (MAP), and IOP (using Schiotz tonometer) were measured 10 minutes before and after the premedication, 30 seconds after succinylcholine and at 1, 5 and 10 minutes after intubation.
Results: Ten minutes after Inj. dexmedetomidine administration, there was marked decrease in IOP. After intubation there was a rise in IOP, however it remained below baseline IOP (p=0.315) and remained low at 10th minute after intubation (p
Keyword :
Dexmedetomidine, Eye, Intraocular pressure, Rapid sequence intubation, Succinylcholine.