Romanò C L, Cecca E
Orthopedic Institute Gaetano Pini, Piazza Cardinal Ferrari 1, 200122 Milan, Italy.
Minerva Anestesiol. 2005 Oct;71(10):609-15.
Although about 10% of the normal population is thought to be needle-phobic, no method to reduce pin-prick pain is currently available for large scale application. We describe a new simple and easy-to-do method to reduce pin-prick pain through the pressure of multiple blunt pins at the injection site.
Two-hundred and twelve patients were randomly assigned to 2 groups. The treated group (n= 106) received intramuscular and subcutaneous injections with the application of the blunt pins and the control group (n= 106) with a placebo device. Pain was tested with the visual analogue scale on a 0 (no pain)-10 (maximum pain) scale.
After intramuscular injections a significant (P< 0.0001) pain reduction in the treated group compared to placebo was observed: 1.90+/-1.27 versus 5.16+/-1.37 (mean pain reduction: 63.2%); 88.5% of the patients in the treated group and 11.4% in placebo group rated the pain as = or < 3. After subcutaneous injections mean reported pain in the treated group compared to placebo was: 0.32+/-0.51 versus 2.61+/-0.77 (mean pain reduction: 87.7%) (P< 0.0001); 95.1% of the patients in the treated group and 9.8% in the placebo rated the pain as = or <1. No side effects were observed.
Multiple blunt pins pressure on the skin, at the time of intramuscular or subcutaneous injection is able to significantly reduce pin-prick pain. The underlying physiological mechanisms are briefly discussed.
尽管据认为约10%的正常人群害怕打针，但目前尚无适用于大规模应用的减轻针刺疼痛的方法。我们描述了一种新的简单易行的方法，通过在注射部位使用多个钝头针施压来减轻针刺疼痛。
212例患者被随机分为两组。治疗组（n = 106）在进行肌肉注射和皮下注射时使用钝头针，对照组（n = 106）使用安慰剂装置。采用视觉模拟评分法在0（无疼痛）至10（最大疼痛）的量表上对疼痛进行测试。
肌肉注射后，与安慰剂组相比，治疗组疼痛显著减轻（P < 0.0001）：分别为1.90±1.27和5.16±1.37（平均疼痛减轻：63.2%）；治疗组88.5%的患者和安慰剂组11.4%的患者将疼痛评为≤3。皮下注射后，治疗组与安慰剂组相比，平均报告疼痛分别为：0.32±0.51和2.61±0.77（平均疼痛减轻：87.7%）（P < 0.0001）；治疗组95.1%的患者和安慰剂组9.8%的患者将疼痛评为≤1。未观察到副作用。
在进行肌肉注射或皮下注射时，在皮肤上使用多个钝头针施压能够显著减轻针刺疼痛。文中简要讨论了其潜在的生理机制。
