The effectiveness and safety of tranexamic acid in bilateral total knee arthroplasty: A meta-analysis.
OBJECTIVE
A meta-analysis was performed to investigate the effectiveness and safety of tranexamic acid (TXA) for the treatment of blood loss after a bilateral total knee arthroplasty (TKA).


METHODS
Patients prepared for bilateral TKA and intervention including TXA versus placebo were comprehensively retrieved from MEDLINE (PubMed), Embase, Cochrane Central Register of Controlled Trials (CENTRAL), and Web of Science from the time of the establishment of these databases to January 2016. The outcomes were all calculated by Stata 12.0 software. The continuous endpoints (total blood loss and blood loss in drainage) were calculated as mean difference (MD) and 95% confidence intervals (CIs). Binary variables (the need for transfusion, and the occurrence of deep venous thrombosis [DVT]) were calculated as relative risk (RR) with 95% CIs.


RESULTS
Pooled results revealed that treatment with TXA associated with less need for transfusion (P = 0.000) and the value of Hb drop postoperatively (P = 0.290) after bilateral TKA. The results also indicated that TXA can decrease the total blood loss and blood loss in drainage after bilateral TKA (P < 0.05). Meanwhile, TXA can decrease the blood units transfused per patient by 1.23 U (P = 0.001). There is no statistically significant difference in terms of the occurrence of DVT between the 2 groups (P = 0.461).


CONCLUSIONS
Based on the current evidence, TXA can decrease the need for transfusion and the total blood loss without increasing the occurrence of DVT, and its administration is recommended routinely in bilateral TKA.
aDepartment of Orthopaedics, Zhejiang Rongjun Hospital, Jiaxing bDepartment of Orthopaedics, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China.
Kedi
K
Weng
Xingen
X
Zhang
Qing
Q
Bi
Chen
C
Zhao
D000368:Aged; D000933:Antifibrinolytic Agents / Q000627:therapeutic use*; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000379:methods; D001803:Blood Transfusion / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019106:Postoperative Hemorrhage / Q000188:drug therapy*; D011184:Postoperative Period; D014148:Tranexamic Acid / Q000627:therapeutic use*; D016896:Treatment Outcome; D020246:Venous Thrombosis / Q000453:epidemiology / Q000209:etiology
D000933:Antifibrinolytic Agents; D014148:Tranexamic Acid
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