The Effect of Injection Duration of Subcutaneous Enoxaparin Sodium on Pain ¬intensity and Bruising of Injection Site

Injection of subcutaneous low molecular weight heparin often causes some local reactions such as ¬bruising, hematoma¬, and pain, directly related to inappropriate injection method¬. This study aimed at determining the effect of injection duration of¬ SubcutaneousEnoxaparin Sodium on the size of bruising and the severity of injection pain. This experimental study was conducted on 36 patients medicated by subcutaneous Enoxaparin Sodium (60mg). ¬¬They were randomly divided into two groups.¬ The first group received routine method of subcutaneous anoxaparine injection (10 second duration injection technique) and in the second group in addition to routine method,¬“10 second waits” before removing needle was performed. Data collection was carried out by using a researcher-made check-list consisting of a section for demographic data and a section to record the extent of bruising and pain intensity.¬ The Extent of bruising was measured by using a clear flexible ruler within 24, ¬ 48 and 72 hours and pain intensity by visual analog scale (VAS), immediately after injection¬.¬¬We analyzed the Data by independent T test and Chi square. ¬ The ¬Results indicate ¬¬that¬ the mean ¬of pain intensity in second group (¬3.05±1.71¬)¬ is less than first group (¬3.86 ± 2.75¬)¬.¬There is no significant difference between two groups for the extent of bruising in 24, ¬ 48 and 72 hours (P>0.05). with regard to ¬pain intensity and the size¬ of the bruising, the two groups are not significantly different.