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. 2016 Feb 12;17:76. doi: 10.1186/s12891-016-0917-y

Table 3.

Surgical and postoperative information, efficacy and safety in patients receiving preoperative and postoperative initiation of anticoagulation therapy

Characteristics Preoperative Anticoagulation group Postoperative anticoagulation group Total P value
(n=133) (n=89) (n=222)
Surgical information
 General anaesthesia, n (%) 37 (27.82) 17 (19.10) 54 (34.32)
 Surgery time (min),mean ± SD 173±43 180±53 176±34 0.287
 Intraoperative bleeding (mL),mean ± SD 208±183 228±179 216±135 0.204
 Intraoperative blood transfusion, n (%) 9 (6.77) 6 (6.74) 15 (6.76)
Postoperative information
 Postoperative blood transfusion, n (%) 22 (16.54) 13 (14.61) 35 (15.77)
 Postoperative drainage (mL),mean ± SD 212±154 244±196 225±133 0.403
 Reduction in hemoglobin concentrations (g/L) 23±11 27±13 25±14 0.143
 Hospital stays(days),mean ± SD 20±5 19±6 20±4 0.104
Efficacy assessment, n (%)
  Symptomatic DVT 1 (0.75) 1 (1.1) 2 (0.90)
  Symptomatic PE 2 (1.5) 1 (1.1) 3 (1.35)
Safety assessment, n (%)
  Major bleeding 0 (0) 0 (0) 0 (0)
  Minor bleeding 5 (3.76) 3 (3.37) 8 (3.60)
  Thrombocytopenia 0 (0) 1 (1.1) 1 (0.45)
  Elevated aminotransferase 0 (0) 1 (1.1) 1 (0.45)
  Suspicious allergic reaction 1 (0.75) 0 (0) 1 (0.45)