Penambahan Natrium Bikarbonat 8,4% pada Lidokain 2% untuk Mengurangi Nyeri Saat Infiltrasi Anestetik Lokal

Local anesthetic infiltration in the area of epidural injections using lidocaine can cause pain. This research was done in June–July 2013, in Dr. Hasan Sadikin Hospital, to determine the effectiveness of adding 8.4% sodium bicarbonate to lidocaine HCl 2 % with 1:10 ratio. This was a double-blind randomized control study involving 44 patients undergoing surgery with epidural techniques. Subjects were divided into two groups, the experimental group ( LB ) was given 2% lidocaine HCl with sodium bicarbonate 8.4% 1:10 ratio as a local anestetich while the control group (L) was given lidocaine 2%. Numeric rating scale (NRS) was assessed during infiltration. Data was analyzed using chi-squere test, t-test and Mann-Whitney Test , with 95% confidence level and 94% strength tes and considered significant if p0.05. In conclusion, alkalinization of 2% lidocaine HCl by addition of 8.4% sodium bicarbonate with 1:10 ratio has an effect in reducing NRS.