Table 1 Factors associated with the development of perioperative DVT
Variables | DVT group | Non- DVT group | P value |
|---|---|---|---|
Age(mean years±SD) | 78 ± 4 | 78 ± 5 | 0.911 |
Male sex (%) | 2 | 70 | 0.330 |
BMI(mean ± SD) | 22.9 ± 4.1 | 23.1 ± 4 | 0.910 |
EF(%) | 60.5 ± 1.1 | 60.6 ± 3.7 | 0.661 |
Comorbidities | |||
 Hypertension | 5 | 117 | 0.303 |
 Coronary artery disease | 1 | 42 | 0.478 |
 Diabetes | 3 | 58 | 0.529 |
 Arrhythmia | 2 | 32 | 0.600 |
 Cerebral infarction | 2 | 32 | 0.583 |
 Pulmonary disease | 3 | 15 | 0.074 |
 Anemia | 13 | 133 | 0.014 |
 PH(mean ± SD) | 7.43 ± 0.02 | 7.49 ± 1.22 | 0.861 |
 Hb(mean ± SD) | 107.1 ± 10.1 | 115.6 ± 18.7 | 0.007 |
 PCO2(mean ± SD) | 37.7 ± 4.4 | 39.8 ± 5.7 | 0.212 |
 PO2(mean ± SD) | 76.2 ± 9.6 | 75.9 ± 17.9 | 0.490 |
 D-dimer(mean ± SD) | 4860 ± 7824 | 3373 ± 7380 | 0.095 |
 ESR(mean ± SD) | 42.0 ± 18.6 | 33.9 ± 19.7 | 0.113 |
ASA classification | |||
 I-II | 6 | 106 | 0.814 |
 III-IV | 9 | 143 | 0.814 |
Anesthesia method | |||
 General anesthesia | 2 | 46 | 0.859 |
 Epidural anesthesia | 0 | 16 | 0.609 |
 Regional nerve block | 10 | 151 | 0.892 |
 General + nerve block | 3 | 33 | 0.443 |
 Injure to operation time(day) | 18.1 ± 12.1 | 13.7 ± 36.3 | 0.002 |
Type of operation | |||
 Hip replacement | 1 | 25 | 1.000 |
 Femoral head replacement | 4 | 93 | 0.386 |
 Bone nail | 10 | 128 | 0.270 |
 Operation time(min) | 103.1 ± 53.4 | 99.7 ± 47.4 | 0.901 |
 Preoperative hospitalization(day) | 8.1 ± 3.2 | 6.4 ± 3.2 | 0.039 |
 Postoperative hospitalization(day) | 12.4 ± 4.5 | 10.0 ± 6.4 | 0.159 |
 In-hospital time(day) | 20.5 ± 4.5 | 16.5 ± 7.3 | 0.001 |
 Blood loss(ml) | 365 ± 464 | 258 ± 220 | 0.898 |
 Whether transfusion | 2 | 36 | 0.904 |