Gynecologists May Underestimate the Amount of Blood Loss during Total Laparoscopic Hysterectomy

Figure 1

(a) Measurement of blood loss. The measurement of blood loss was A, 59.8 ± 4.2 ml; B, 168.6 ± 9.0 ml; and C, 206.8 ± 19.6 ml in laparoscopic surgery and A, 130.7 ± 11.7 ml; B, 236.7 ± 18.4 ml; and C, 280.9 ± 12.3 ml in open surgery. The blood loss was significantly lower in laparoscopic surgery than open surgery in A, B, and C (, , and , respectively). (b) Change of the concentration of hemoglobin. The reduction of hemoglobin after surgery compared with that before surgery was A, 8.0 ± 0.2%; B, 13.3 ± 0.4%; and C, 12.0 ± 0.7% in laparoscopic surgery and A, 9.8 ± 0.6%; B, 15.2 ± 0.8%; and C, 12.0 ± 0.4% in open surgery. Blood loss was significantly lower during laparoscopic surgery than open surgery in A and B; however, it was not significantly different in C (, , and , respectively). , where Hb_pre is the concentration of hemoglobin one day before surgery and Hb_post is that one day after surgery. ΔHct (the changed value of hematocrit) was similarly defined. A, surgery for ovarian tumor including cystectomy and salpingo-oophorectomy (unilateral or bilateral); B, myomectomy; C, hysterectomy; , number of patients; L, laparoscopic surgery; O, open surgery. Values were described as means ± S.E. ; ; . n.s., not significant.

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