Anales de la RANM

69 A N A L E S R A N M R E V I S T A F U N D A D A E N 1 8 7 9 POSTOPERATIVE BLOOD SALVAGE AFTER KNEE ARTHROPLASTY Valbuena I, et al. An RANM. 2022;139(01): 67 - 77 TABLE 1.- Homogeneity results. Cuantitative variables BS No BS p Cualitative variables BS No BS p Age 71,8 71,5 0,718 Gender Male /Female 30/100 34/96 0,666 Weight 77,52 78,89 0,427 ASA Classification: ASA I ASA II ASA III 5 91 30 2 78 43 0,102 Height 160,63 161,14 0,686 Cardiovascular diseases: 0,703 Analytic results: Arterial hypertension 85 80 0,607 - Haemoglobin 13,82 13,63 0,245 Ischemic heart disease 16 11 0,417 - Haematocrit 41,75 41,69 0,891 Hematological diseases: Anemia Pulmonary embolism/ deep vein thrombosis Trombopenia Hemophilia Myeloproliferative Syndromes/Lymphoma 1 6 2 0 3 0 2 1 1 0 0,388 - Platelets 230x10 3 241x10 3 0,141 Anti-platelet therapy 22 24 0,352 - Protrombin activity 106,9 106,89 0,992 Anticoagulation therapy 10 9 0,817 - Fibrinogen 419,22 426,57 0,505 Preoperative LWMH treatment 9 9 1 - International Normalized Ratio (INR) 0,97 0,97 0,681 Tipe of surgery: Primary TKA Cementless TKA Replacement 116 3 9 114 1 13 0,627 - Cephalin rate 0,94 0,94 0,786 Anesthetic technic Spinal Combined General 91 32 4 115 12 3 0,500 Surgery time 103,29 102,92 0,904 Ischemia release moment: Before After 112 12 102 18 0,195 Ischemia time 82,28 82,98 0,812 Total surgery time 151,90 155 0,498 Postoperative bleeding 796,8 727,88 0,203 p: statistic signification. ANOVA. BS: blood salvage; LWMH: low weigh molecular heparin; TKA: total knee arthroplasty.