Table 1 Patient’s demographic, clinical, and surgical characteristics
From: The incidence and risk factors for allogenic blood transfusion in total knee and hip arthroplasty
Characteristics | Total (n = 1534) | TKA (n = 541) | THA (n = 993) |
|---|---|---|---|
Gender | |||
Male (%) | 467 (30.4) | 97 (17.9) | 370 (37.3) |
Female (%) | 1067 (69.6) | 444 (82.1) | 623 (62.7) |
Age, years (mean ± SD) | 64.8 ± 12.5 | 67.4 ± 7.4 | 63.4 ± 14.3 |
BMI, kg/m2 (mean ± SD) | 24.4 ± 4.0 | 26.1 ± 3.8 | 23.4 ± 3.8 |
Diabetes (%) | 184 (12.0) | 89 (16.5) | 95 (9.6) |
Hypertension (%) | 548 (35.7) | 239 (44.2) | 309 (31.1) |
Malignance (%) | 41 (2.7) | 16 (3.0) | 25 (2.5) |
Smoking (%) | 160 (10.4) | 32 (5.9) | 128 (12.9) |
Diagnosis | |||
OA (%) | 643 (41.9) | 491 (90.8) | 152 (15.3) |
RA (%) | 64 (4.2) | 50 (9.2) | 14 (1.4) |
Femoral neck fracture (%) | 401 (26.1) | – | 401 (40.4) |
ONFH (%) | 255 (16.6) | – | 255 (25.7) |
DDH (%) | 106 (6.9) | – | 106 (10.7) |
AS (%) | 54 (3.5) | – | 54 (5.4) |
Previous septic arthritis (%) | 11 (0.7) | – | 11 (1.1) |
PT, s (mean ± SD) | 11.5 ± 1.0 | 11.4 ± 0.9 | 11.6 ± 1.0 |
INR (mean ± SD) | 1.01 ± 0.09 | 1.00 ± 0.08 | 1.02 ± 0.09 |
APTT, s (mean ± SD) | 26.9 ± 4.5 | 25.9 ± 3.8 | 27.4 ± 4.8 |
Preoperative Hb level, g/L (mean ± SD) | 127.9 ± 14.9 | 127.3 ± 13.8 | 128.2 ± 15.5 |
PLT, 109/L (mean ± SD) | 200.4 ± 64.3 | 206.7 ± 66.9 | 197.0 ± 62.6 |
Operation time, min (mean ± SD) | 110.3 ± 29.8 | 124.2 ± 23.1 | 102.7 ± 30.4 |
Intraoperative blood loss, mL (mean ± SD) | 290.2 ± 168.9 | 201.3 ± 111.0 | 338.7 ± 175.2 |