Skip to main content

Table 1 Patient characteristics

From: Transfusions and blood loss in total hip and knee arthroplasty: a prospective observational study

  Hip arthroplasty Knee arthroplasty p value
n = 114 n = 79 (hip vs. knee)
Male gender 62 (54%) 32 (41%) 0.058
Preop medication    
NSAID 30 (26%) 16 (20%) 0.33
Acetylsalicylic acid 18 (16%) 18 (23%) 0.22
SSRI 10 (9%) 9 (11%) 0.55
Thromboprophylaxis    
Dabigatran 104 (91%) 75 (95%) 0.33
LMWH 10 (9%) 4 (5%)
Anesthesia    
Spinal 95 (83%) 65 (82%) 0.85
General 19 (17%) 14 (18%)  
BMI (kg/ m 2 ) 27 ± 4.1 (17–40) 30 ± 4.5 (22–49) <0.001
Age (years) 66 ± 12 69 ± 10 0.086
Hemoglobin (g/ L) 136 ± 13 133 ± 12 0.24
Platelet count (10 9 /L) 283 ± 65 280 ± 72 0.81
PT (INR) 1.0 ± 0.1 1.0 ± 0.1 0.77
aPTT (s) 34 ± 3.8 33 ± 3.3 0.57
Operation time (min) 125 ± 28 113 ± 28 0.004
RBC transfusion 21 (18%) 9 (11%) 0.18
RBC transfusion (units) 0 (0–4) 0 (0–3) 0.22
EBL (mL) 984 (0–4571) 789 (0–1927) 0.001
EBL/ kg ( mL /kg) 12 (0–33) 9 (0–23) <0.001
Cellsaver ( mL) 0 (0–1200) 0 0.007
  1. Abbreviations: aPTT activated partial thromboplastin time, BMI body mass index, EBL estimated blood loss, LMWH low molecular weight heparin, NSAID nonsteroidal anti-inflammatory drugs, PT prothrombine time, RBC transfusion red blood cell transfusion, SSRI selective seretonine receptor inhibitor.
  2. Mean and standard deviation, median and range, or number and percentage.