Surgical methods and postoperative treatment
anemia, fatigue
MYOCARDIAL ISCHEMIA, ANEMIA
All procedures were performed by the same orthopedic surgeon (senior level). All patients were given 60 mg/kg TXA intravenously 5 min prior to prosthesis placement [Patients’ vital signs and state of consciousness were closely monitored, meanwhile the blood supply and drainage volume of the affected limb were also observed. The drainage tube was removed 24 h after surgery and the drainage volume was recorded. After recovery from anaesthesia, each patient was instructed to lie flat and keep the affected limb straight for ankle pump exercises. Compression bandaging of the affected limb and ice packs were recommended 24 h after surgery. Multimodal analgesia using analgesic pumps combined with NSAIDs was recommended. On the second day after surgery, patients were encouraged to perform active and passive knee flexion and extension exercises under the help of the surgeon and walk with the help of a walker.According to the clinical transfusion guidelines released by the Chinese Ministry of Health, allogeneic blood transfusions are given if the Hb is < 70 g/L in asymptomatic patients or 70–100 g/L in symptomatic patients (namely, fatigue, poor appetite, anemia, or myocardial ischemia). An attending physician who was not involved in this study were responsible for the decision-making of blood transfusion [