Lower anticoagulation intensity reduces the occurrence of hemorrhagic complications in patients with extracorporeal membrane oxygenation / 中华急诊医学杂志

ABSTRACT

Objective:To analyze whether lower anticoagulation intensity can reduce the incidence of complications in patients with extracorporeal membrane oxygenation (ECMO).Methods:Clinical data of 88 non-cardiac surgery patients who received ECMO support for more than 72 h were collected in the Extracorpical Life support Center of Jiangsu Province Hospital from March 2015 to March 2021. According to the average activated partial thromboplastin time (APTT) level on the third day of ECMO, the patients were divided into the APTT < 50 s group ( n=53) and APTT ≥50 s group ( n=35). The venovenous ECMO (VV-ECMO) subgroup was divided into the APTT <50 s group ( n=23) and APTT ≥50 s group ( n=10). The venoarterial ECMO (VA-ECMO) subgroup was divided into the APTT <50 s group ( n=30) and APTT≥50 s group ( n=25). The average daily transfusion volume of red blood cells during ECMO, the incidence of bleeding, the incidence of thrombosis and all-cause mortality were compared between the two groups. Results:There were no significant differences in the incidence of thrombosis and all-cause mortality in the APTT <50 s group compared with the APTT ≥50 s group ( P>0.05), but the incidence of bleeding and the daily transfusion volume of red blood cells were significantly decreased (7.5% vs. 35.7%; 0.50 U vs. 0.88 U) ( P < 0.05). In 33 VV-ECMO patients, the all-cause mortality, incidence of bleeding, average daily transfusion volume of red blood cells in the APTT <50 s group were lower than those in the APTT ≥50 s group, and the incidence of thrombosis was higher, but there was no statistical difference between the two groups ( P>0.05). In the 55 VA-ECMO patients, there were no significant differences in all-cause mortality, incidence of bleeding, thrombosis and average daily transfusion volume of red blood cells between the two groups ( P > 0.05). Conclusions:The lower anticoagulation intensity in patients without anticoagulation can reduce the occurrence of bleeding in ECMO patients. It is reasonable for such patients to have a lower anticoagulation intensity and studies with larger sample size need to be carried out.