Ahmad Muhammad
Department of Aesthetic Plastic Surgery, Islamabad Private Hospital, Islamabad, Pakistan.
World J Plast Surg. 2017 Sep;6(3):351-355.
Digital nerve block is commonly performed by care providers in medical fields. This study compares the blocks in terms of effectiveness of anesthesia and pain.
Patients were divided into two groups. First group underwent digital block whereas 2 group had transmetacarpal digital block. The subcutaneous ring block was performed by two injections of 3 ml of 2% lignocaine in a 3 ml syringe with a 26G needle at the level of phalangeal/palmer crease. One prick was performed on either side of the finger base extending on dorsal and volar aspects of the digit. The transmetacarpal block received lignocaine identically at dorsal aspect of metacarpo-phalangeal joint. 1.5ml of the solution was injected in dorsal and 1.5ml in palmer side on either side of the finger. When sensation of needle was felt, 1ml of the solution was injected. Then the needle was withdrawn injecting another 1ml and finally the last 1ml was injected close to the dorsal skin. The pain prick was recorded after 30 seconds.
The mean time to complete abolition of sensation was 9.1 minutes in group I and 9.0 minutes in group II. The mean duration of anaesthesia was 202 minutes in group I and 206.8 minutes in group II. The mean pain scale was 5.67 (range=4-7) in group I and 4.2 (range=3-7) in group II.
Subcutaneous ring block and transmetacarpal techniques are good in digital anesthesia and involve the administration of the local anaesthetic through two injections.
在医学领域，护理人员常进行指神经阻滞。本研究比较了两种阻滞方法在麻醉效果和疼痛方面的差异。
将患者分为两组。第一组接受指阻滞，而第二组接受掌骨间指阻滞。皮下环形阻滞是通过在指骨/掌侧折痕水平，使用26G针头的3ml注射器分两次注射3ml 2%利多卡因进行的。在手指基部两侧各进行一次穿刺，穿刺点向手指的背侧和掌侧延伸。掌骨间阻滞在掌指关节背侧以相同方式给予利多卡因。在手指两侧的背侧注射1.5ml溶液，掌侧注射1.5ml。当感觉到针刺感时，注射1ml溶液。然后拔出针头，再注射1ml，最后在靠近背侧皮肤处注射最后1ml。30秒后记录疼痛穿刺情况。
第一组感觉完全消失的平均时间为9.1分钟，第二组为9.0分钟。第一组的平均麻醉持续时间为202分钟，第二组为206.8分钟。第一组的平均疼痛评分是5.67（范围=4 - 7），第二组为4.2（范围=3 - 7）。
皮下环形阻滞和掌骨间技术在指麻醉方面效果良好，且都涉及通过两次注射给予局部麻醉剂。
