Dexmedetomidine during local anesthesia.
The objective of our study was to assess the efficacy and safety of dexmedetomidine given in a small dose for a 1-h infusion as an adjuvant to local analgesia in ophthalmic operations. The study was double-blind prospective, randomized, and placebo controlled. We studied the effects of a small dose of dexmedetomidine (0.5 micro.kg(-1).h(-1) for 10 min followed by 0.2 micro.kg(-1).h(-1) for 50 min. Patients were divided randomly into two groups with 20 patients in each: group A was the study group and group B was the placebo group. Heart rate, systolic blood pressure, and diastolic blood pressure were significantly lower in the dexmedetomidine group than the placebo group. Bispectral index values were significantly lower in the dexmedetomidine group than the placebo group. Also, intraocular pressure significantly decreased in the dexmedetomidine group compared to the placebo group. The study revealed that dexmedetomidine in the studied dose has a sedative effect, provides safe control of heart rate and blood pressure, and also decreases intraocular pressure during ophthalmic surgery under local anesthesia.
Abdalla
Mahmoud I M
MI
Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Al Mansouri
Fatima
F
Bener
Abdulbari
A
D000328:Adult; D000368:Aged; D000772:Anesthesia, Local; D001794:Blood Pressure / Q000187:drug effects; D002387:Cataract Extraction; D020927:Dexmedetomidine / Q000494:pharmacology*; D004311:Double-Blind Method; D004569:Electroencephalography / Q000187:drug effects; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D006993:Hypnotics and Sedatives / Q000494:pharmacology*; D007429:Intraocular Pressure / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies
D006993:Hypnotics and Sedatives; D020927:Dexmedetomidine