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Randomized Controlled Trial
. 2009 Oct;33(5):1263-8.
doi: 10.1007/s00264-008-0647-3. Epub 2008 Aug 27.

The effect of tourniquet use on hidden blood loss in total knee arthroplasty

Bin Li  1 , Yu Wen, Haishan Wu, Qirong Qian, Xiangbo Lin, Hui Zhao
Affiliations
Randomized Controlled Trial

The effect of tourniquet use on hidden blood loss in total knee arthroplasty

Bin Li et al. Int Orthop. 2009 Oct.

Abstract
in English, French

The objective of this study was to examine the characteristics of hidden blood loss and assess the effects of using a tourniquet on postoperative hidden loss in patients undergoing primary total knee arthroplasty. Eighty patients were randomised into two groups: one group underwent operation with a tourniquet and one without. Operating time, perioperative blood loss, hidden blood loss, free haemoglobin, swelling, ecchymosis, straight leg raising action and knee flexion were measured. There were significant differences in the hidden blood loss, free haemoglobin, postoperative swelling, extent of ecchymosis, straight leg raising and postoperative knee flexion in the early period after operation between the two groups. Our results indicate that knee arthroplasty operations with a tourniquet might promote postoperative hidden blood loss and hinder patients' in early postoperative rehabilitation exercises.

L’objectif de l’étude est de déterminer les caractéristiques des pertes sanguines occultes et les effets de l’utilisation du garrot sur ces pertes sanguines dans les prothèses totales du genou primaires. Matériel et méthode: les patients ont été randomisés en deux groupes, un groupe a été opéré sous garrot et un groupe sans garrot. Le temps opératoire, les pertes sanguines péri-opératoires et occultes, le taux d’hémoglobine, l’hématome, l’ecchymose, la possibilité d’extension active et de flexion du genou ont été mesurés. Résultats: il y a une différence significative sur les pertes sanguines occultes, le taux d’hémoglobine, les douleurs post-opératoires, les ecchymoses, l’élévation active de la jambe et la flexion du genou post-opératoire. En conclusion, nos résultats montrent que la prothèse totale du genou avec garrot, peut entraîner des pertes de sang occultes chez les patients notamment en cours de la rééducation post-opératoire.

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