Wågø Kathrine J, Skarsvåg Trine I, Lundbom Janne S, Tangen Lena F, Ballo Solveig, Hjelseng Tonje, Finsen Vilhjalmur
a Faculty of Medicine , NTNU , Trondheim , Norway and.
b Department of Orthopaedic Surgery , St. Olav's University Hospital , Trondheim , Norway.
J Plast Surg Hand Surg. 2016;50(2):115-8. doi: 10.3109/2000656X.2015.1111223. Epub 2015 Nov 23.
Local anaesthetics such as lidocaine are used both in minor and major surgical procedures, and can be painful. Different methods have been investigated to reduce the discomfort of the injections. This study investigated if different needle gauges can influence the pain experienced during injection of lidocaine.
A randomised study was performed on 36 healthy volunteers. Each participant received three injections of 3 ml 1% lidocaine subcutaneously on the abdomen using needles of different gauges. Following each injection, the participants evaluated the pain experienced on a visual analogue scale (VAS). After the session, they were asked to evaluate verbally which injection they found least and most painful. The VAS and verbal reports were used and compared to evaluate the difference between the two types of clinically reported pain scales.
Twenty-one participants verbally reported the thinnest needle (27 gauge (G)) as least painful, compared to the intermediate (23 gauge; p = 0.013) and the thickest needle (21 gauge, p = 0.004). The mean VAS scores were 19 (SD = 13) for the 21 gauge, 18 (SD = 13) for the 23 gauge, and 16 (SD = 14) for the 27 gauge needles.
A significant preponderance of respondents stated that there had been less pain using the thinnest needle. Mean VAS responses showed the same trend, but the differences between them were not statistically significant.
利多卡因等局部麻醉剂用于大小手术中，注射时可能会引起疼痛。人们研究了不同方法来减轻注射带来的不适。本研究调查了不同规格的针头是否会影响利多卡因注射时的疼痛感受。
对36名健康志愿者进行了一项随机研究。每位参与者使用不同规格的针头在腹部皮下注射三次3毫升1%的利多卡因。每次注射后，参与者用视觉模拟评分法（VAS）评估疼痛感受。注射结束后，要求他们口头评价哪一次注射最不痛和最痛。使用VAS和口头报告来评估两种临床报告疼痛量表之间的差异。
21名参与者口头报告最细的针头（27号）注射时最不痛，相比中等规格（23号；p = 0.013）和最粗的针头（21号，p = 0.004）。21号针头的平均VAS评分为19（标准差 = 13），23号为18（标准差 = 13），27号为16（标准差 = 14）。
绝大多数受访者表示使用最细的针头时疼痛较轻。平均VAS反应显示出相同趋势，但差异无统计学意义。
