肌内注射按体型选择针头的观察与分析

Study of choosing intramuscnlar injection needle according to the type of body

通过对无力型、正力型、超力型三种不同体型共３６０例病人的常用臀大肌，肌注部位皮下脂肪层厚度的测定及临床对照观察分析提示：肌注必须按体型选择针头，常规使用的６．５～７号肌注针头已不适宜给正力型中老年女性和超力型男女病人使用，而分别应选用３５、４０、４５ｍｍ长肌注针头，才能进入肌肉层，有效地将药物注入肌肉组织，从而提高药效，减低局部肿痛和硬结的发生。

The sample of this study consisted of 360 patients with asthenic, sthenic or ortho-sthenic type. The thickness of hypodermic fat at dorsogluteal site was measured and the effect was compared. The result suggested that needle should be selected according to different habitus before intramuscular injection. The commonly used No. 6.5 and No. 7 needle are not suitable for elderly females patients with ortho-sthenic type or male and female patients with sthenic type. For these kind of patients, a needle with a length of 35 mm, 40 mm or 45 mm should be used respectively in order to reach muscular tissues,have good effect, and reduce local pain and tissue hardening.