Effect of injection duration and pressing time of subcutaneous low molecular weight heparin on bruising and pain in patients with acute coronary syndrome
SHEN Zhiqi, SHI Huan, MA Rui, ZHANG Yuzhen, SUN Tengwei
Department of Cardiology, General Hospital of Chinese People's Armed Police Force,Beijing 100039,China
Abstract:Objective To investigate the effect of the injection duration and pressing time of subcutaneous low molecular weight heparin on bruising and pain in patients with acute coronary syndrome (ACS) during antiplatelet therapy, and to find an effective surgical method.Methods Two hundred patients with ACS were enrolled in this study. They were administered with heparin subcutaneously, and each patient received four injections in four different ways. Way A: patients were injected for 10 s, needles were pulled out after 10 s ,and the injection areas were not pressed. Way B: patients were injected for 10 s, needles were pulled out after 10 s, and the injection areas were pressed for 5 min. Way C: patients were injected for 30 s, needles were pulled out ,and the injection areas were not pressed. Way D: patients were injected for 30 s, needles were pulled out ,and the injection areas were pressed for 5 min. The degree of pain at the injection site was evaluated with visual analogue scale (VAS) when the injection was finished, and the largest discoloration diameter was measured 48 h after injection.Results Way A’s incidence of subcutaneous bleeding(40.5%) was the lowest. Compared with other ways (67.0%, 58.5%, 58.0%), the difference was statistically significant(P<0.001).The skin discoloration diameters of the four ways were(2.58±2.23)mm,(7.87±11.26)mm,(3.81±3.69)mm and(6.15±9.97)mm respectively. The skin discoloration diameter of Way A and C was significantly smaller than that of B and D, and the difference was statistically significant(P<0.05). There was no statistically significant difference between Way A and C. Way A’s pain rate (44.5%) was the lowest. Compared with Way B (59.5%), the difference was statistically significant (P<0.05). The pain scores of the four ways were (0.70±0.93), (1.13±1.29), (0.94±1.27) and (1.18±1.46) respectively. The pain score of Way A was significantly lower than that of B and D, and the difference was statistically significant (P<0.05).There was no statistically significant difference between A and C.Conclusions When needles are pulled out,and the injection areas are not pressed after the patients with acute coronary syndrome are injected for 10 s, the bruising and pain of patients can be reduced, so can the workload of the nurses.
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SHEN Zhiqi, SHI Huan, MA Rui, ZHANG Yuzhen, SUN Tengwei. Effect of injection duration and pressing time of subcutaneous low molecular weight heparin on bruising and pain in patients with acute coronary syndrome. Med. J. Chin. Peop. Armed Poli. Forc., 2018, 29(3): 253-256.
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