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Table 2 Comparison of blood loss between K-line (+) group and K-line (-) group

From: Influence of K-line on intraoperative and hidden blood loss in patients with ossification of the posterior longitudinal ligament when undergoing unilateral open-door laminoplasty

  K-line (+) group K-line (-) group P value
Intraoperative blood loss (ml) 205.5 ± 98.3 286 ± 110.5 0.003
Postoperative drainage (ml) 160.8 ± 70.5 187:6 ± 88.3 0.189
Hidden blood loss (ml) 265.6 ± 103.8 295.5 ± 112.6 0.072
Postoperative Hb (g/L) 11.1 ± 1.5 10.5 ± 0.8 0.770
Postoperative HCT (%) 32.5 ± 3.8 31.8 ± 3.9 0.598
Surgical time (min) 95.5 ± 20.8 108.3 ± 30.5 0.075