Abstract
The aim of the study was to investigate the influential factors for hidden blood loss after a total knee arthroplasty and their relationship with the total blood loss. Total knee arthroplasty (TKA) is a crucial treatment of late-stage knee osteoarthritis. Measured blood loss is significantly inconsistent with the hemoglobin (HB) drop postoperatively. Fifty-four patients, 20 males and 34 females, were retrospectively analyzed. The preoperative blood loss and therefore the hidden blood loss following TKA were calculated by the Gross formula. The typical perioperative blood loss was found to be 780±220 ml and therefore the average hidden blood loss was 280±180 ml. No significant differences were found in hidden blood loss for males compared to females. Hidden blood loss may not be reduced by hemostasis during operation with a deflated tourniquet.
Highlights
Total knee arthroplasty (TKA) may be a gold standard treatment for endstage knee osteoarthritis
15 million transfusions are performed annually worldwide caused by TKA4
Lotke et al came to a conclusion that the mean blood loss in TKA when calculated from pre-operative drop by hemoglobin was 1518 ml, which needed a minimum of one transfusion[5]
Summary
Total knee arthroplasty (TKA) may be a gold standard treatment for endstage knee osteoarthritis This surgery is considered the foremost effective treatment for severe knee osteoarthritis with good or excellent long-term outcomes[1,2,3]. It represents a serious orthopaedic surgery which involves a significant blood loss due to bone cuts and soft tissue releases. 15 million transfusions are performed annually worldwide caused by TKA4 In this surgery the blood loss consists of the visible blood loss from the wound drainage, into the tissues which is hidden and the surgical field. It could lead to a longer hospital stay and increased mortality[6]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
