بررسی تأثیر طول مدت تزریق هپارین زیر جلدی بر شدت درد محل تزریق بیماران بستری در بخشهای منتخب بیمارستانهای قلب حضرت فاطمه (س) و شهید بهشتی شیراز در سال 1381

This research was a quasi - experimental study that carried out, the&nbsp;purpose was to determine the effectiveness of injection duration on site&nbsp;pain intensity associated with subcutaneous heparin in patients of wards of&nbsp;the Hazrat Fatemeh and the Shahid Beheshtie hospital of Shiraz in 2002. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Sample group was estimated 167 patients according to pilot study&nbsp;and sampling was done by continous manner. Data colloction was done by&nbsp;using a researcher-made checklist, consisted of section of demographic&nbsp;carachtristics and a section to record site pain intensity . In order to assess&nbsp;the site pain intensity , visual analogue scale (V.A.S) was used immediately&nbsp;after injection. Data analysis was done by distributional indexes and&nbsp;parametric (paired t-test) and Bi- parametric (Mann witney-U and kruskal&nbsp;wallis tests). Results indicated the 30-seconds duration of injection resulted in&nbsp;significantly less site pain (P<0.001), thus mean of pain intensity at 10second duration technique (38.12 &plusmn; 35.38) was higher than that of 30&nbsp;second duration injection technique (22.66 &plusmn; 30.62). There was a significant&nbsp;difference on site pain intensity between male and female cases , in both&nbsp;injection techniques (10-seconds and 30- seconds), so that mean of site&nbsp;pain intensity of females was more than males. Between age group and&nbsp;site - pain intensity was a significant difference (P<0.05) in 10-seconds &nbsp;&nbsp; injection technique , so there was higher pain intensity in 61-70 year age&nbsp;group and lower pain intensity in 17-50 year age group. But between pain&nbsp;intensity in different age groups there were not significant difference in 30&nbsp;seconds injection technique, so approximately the mean of pain intensity in&nbsp;all age groups was equal . Therefore results of this research indicated administering a subcutaneous&nbsp;heparin injection over longer duration reduces injection site pain specially in&nbsp;females.