The Effect of Blood Transfusion on Recovery After Major Arthroplasties

After obtaining ethical approval Patients undergoing hip or knee arthroplasty or revision arthroplasty will be included in this prospective observational study.

Patient characteristics (age , gender, body mass index, ASA physical status, anticoagulant medication) Preoperative: hemoglobin, hematocrit, platelet, INR, APTT, PT values, the precence of preoperative anemia, anemia treatment modalities will be recorded.

Intraopreative: type and duration of surgery, anesthesia method, monitoring methods used, the amount of intraoprative adminestred fluids (crystalloid-colloid), amount of hemorrhage Postoperative: hemoglobin-hematocrit-platelet leve The amount of blood transfusion and the product used (erythrocyte suspension, fresh frozen plasma, thrombocyte-fibrinogen-factor concentration-cryoprecipitate-other ) Hemoglobin-hematocrit-platelet level before and after transfusion Indications for transfusion; hemoglobin threshold / physiological transfusion indicator; tachycardia, hypotension, low flow rate, desaturation, low SvO2, inotropic requirement, etc. / comorbidities / monitorisation findings, other, Discharge time of patients Early upright position (postoperative 2nd day), information on walking capacities (TUG - The Time Up and Go test) will be recorded and compared between transfused and non-transfused patients