HAND & WRIST
Buffered lidocaine reduces pain with local anesthesia in carpal tunnel decompression
J Hand Surg Am. 2013 May;38(5):971-5. doi: 10.1016/j.jhsa.2013.02.016. Epub 2013 Apr 625 patients (50 hands) undergoing bilateral simultaneous carpal tunnel decompression were randomized to receive local anesthetic injection of lidocaine with a buffered solution of sodium bicarbonate in one hand and mixed with saline in the other. Results, measuring the effects of buffering on visual analog scales pain scores, demonstrated that the buffered hand reported lower pain scores than the control. No adverse events were noted in the procedure.
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