Abstract:Objective To explore the preventive effect of far infrared rays (FIR) irradiation on hospital-acquired pressure ulcers (HAPU) in patients treated with norepinephrine (NA) in ICU. Methods From March 2018 to March 2020, 60 patients treated with NA in ICU of Nanjing Drum Tower Hospital were enrolled and randomly divided into control group (n=30) and observation group (n=30). During treatment, control group was given standard preventive care measures for pressure ulcers, while observation group was given FIR irradiation at sacrococcygeal and heel sites on basis of control group (45 min/once, 3 times/d). The incidence of HAPU, changes of transcutaneous oxygen pressure (TcPO2) at sacrococcygeal and heel sites, and nursing satisfaction were compared between the two groups. Results The incidence of HAPU in observation group was significantly lower than that in control group (6.67% vs 26.67%, P<0.05), while there were no significant difference in stay time of ICU between two groups (P>0.05). TcPO2 at sacrococcygeal and heel sites was decreased with time in both groups after intervention （P＜0.05）. TcPO2 at sacrococcygeal and heel sites in observation group was higher than that in control group （P＜0.05）. The nursing satisfaction of observation group was better than that of control group （P＜0.05）.Conclusion FIR irradiation can improve the local microcirculation blood flow disorders at compressed sites in ICU patients treated with NA, reduce incidence of HAPU and improve clinical nursing effect.