Anales de la RANM

70 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 2.- Comorbidities of study population Comorbidity n (%) ASA Classification: - ASA I 7 (2,8%) - ASA II 169 (67,9%) - ASA III 73 (29,3%) - ASA IV 0 (0%) Hypertension 183 (70,4%) Auricular fibrillation 24 (9,2%) Valvulopathy 15 (5,8%) Ischemic heart disease 13 (5%) Deep vein thrombosis 5 (1,9%) Pulmonary embolism 3 (1,2%) Thrombopenia 3 (1,2%) Hemophilia 1 (0,4%) Preoperative simple anti-platelet therapy 46 (17,8%) Preoperative double anti-platelet therapy 2 (0,8%) Anticoagulation therapy 19 (7,3%) LWMH 18 (6,9%) ASA Classification: American Society of Anesthesiologists Classification; LWMH: low weight molecular heparin.