Makins A, Jess C, Johnson N
Department of Obstetrics and Gynaecology, Royal United Hospital, Combe Park, Bath, UK.
J Obstet Gynaecol. 2007 Feb;27(2):168-70. doi: 10.1080/01443610601124430.
A block randomised, non-blinded trial was performed to see if injecting lidocaine down a surgical drain could reduce the pain associated with its removal. A total of 36 women who had a closed suction intraperitoneal drain after elective gynaecological surgery were randomly allocated to conventional drain removal or drain removal 5-10 min after squirting 10 ml 2% lidocaine down the drain tube. We found that the pain associated with removal of the drain is variable but can be reduced significantly with lidocaine. The median pain score (95% range) during drain removal was 3.0 (2.5 - 5.0) in the group allocated lidocaine compared with 5.5 (4.6 - 6.5) if lidocaine was not used (median difference = 2.0; 95% confidence interval for the difference between medians is 1 - 3.5). In summary, the median pain score was halved by injecting lidocaine down the drain tubing before removal.
进行了一项整群随机、非盲法试验，以观察通过手术引流管注射利多卡因是否能减轻拔除引流管时的疼痛。共有36名在择期妇科手术后留置闭合式腹腔引流管的女性被随机分为两组，一组采用传统方法拔除引流管，另一组在向引流管内注入10 ml 2%利多卡因5 - 10分钟后拔除引流管。我们发现，拔除引流管时的疼痛程度因人而异，但利多卡因可显著减轻疼痛。注入利多卡因组在拔除引流管时的疼痛评分中位数（95%范围）为3.0（2.5 - 5.0），未使用利多卡因组为5.5（4.6 - 6.5）（中位数差值 = 2.0；中位数之间差异的95%置信区间为1 - 3.5）。总之，在拔除引流管前通过引流管注入利多卡因可使疼痛评分中位数减半。
