Study characteristics
The characteristics of the included studies are given in Table 1. The
age of patients was between 18 and 45 years old, and the sizes of
ovarian cysts in the selected studies were similar, mainly at a diameter
of 3-10 cm. Five of the selected studies included patients with various
kinds of ovarian cysts2, 4, 19, 22, 23, while the
others included patients with only endometriomas3,
16-18, 20, 21, 24, 25. As for intervention, we defined nonthermal
hemostatic method as the experimental group. Six studies used suturing
as the nonthermal hemostatic method4, 16-19, 22,
another six used hemostatic matrix or sealants2, 3, 20,
21, 23, 24, and one study combined suturing with hemostatic
matrix25. The control group received
electrocoagulation using bipolar current. The bipolar current used in
all included studies had a power range of 20 to 40 watts. The basal
serum AMH level before surgery did not differ significantly between the
two groups.