Four Methods for Calculating Blood-loss after Total Knee Arthroplasty  

作　　者：Fu-Qiang Gao Zi-Jian Li Ke Zhang Wei Sun Hong Zhang 

机构地区：[1]Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China [2]Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China [3]Department of Orthopedics, The First Affiliated Hospital of People's Liberation Army General Hospital, Beijing 100037, China

出　　处：《Chinese Medical Journal》2015年第21期2856-2860,共5页中华医学杂志（英文版）

摘　　要：Background： Currently, various calculation methods for evaluating blood-loss in patients with total knee arthroplasty （TKA） are applied in clinical practice. However, different methods may yield different results. The purpose of this study was to determine the most reliable method for calculating blood-loss after primary TKA. Methods： We compared blood-loss in 245 patients who underwent primary unilateral TKA from February 2010 to August 2011. We calculated blood-loss using four methods： Gross equation, hemoglobin （Hb） balance, the Orthopedic Surgery Transfusion Hemoglobin European Overview （OSTHEO） formula, and Hb-dilution. We determined Pearson＇s correlation coefficients for the four methods. Results： There were large differences in the calculated blood-loss obtained by the four methods. In descending order of combined correlation coefficient based on calculated blood-loss, the methods were Hb-balance, OSTHEO formula, Hb-dilution, and Gross equation. Conclusions： The Hb-balance method may be the most reliable method of estimating blood-loss after TKA.Background： Currently, various calculation methods for evaluating blood-loss in patients with total knee arthroplasty （TKA） are applied in clinical practice. However, different methods may yield different results. The purpose of this study was to determine the most reliable method for calculating blood-loss after primary TKA. Methods： We compared blood-loss in 245 patients who underwent primary unilateral TKA from February 2010 to August 2011. We calculated blood-loss using four methods： Gross equation, hemoglobin （Hb） balance, the Orthopedic Surgery Transfusion Hemoglobin European Overview （OSTHEO） formula, and Hb-dilution. We determined Pearson＇s correlation coefficients for the four methods. Results： There were large differences in the calculated blood-loss obtained by the four methods. In descending order of combined correlation coefficient based on calculated blood-loss, the methods were Hb-balance, OSTHEO formula, Hb-dilution, and Gross equation. Conclusions： The Hb-balance method may be the most reliable method of estimating blood-loss after TKA.

关 键 词：ARTHROPLASTY Blood-loss Calculation Method Knee Replacement 

分 类 号：S829.1[农业科学—畜牧学] Q51[农业科学—畜牧兽医]