Study Objective: The study aimed to evaluate whether there is an association between the ovarian ligament length and ovarian torsion. Design: This is a prospective cohort study. Design Classification: II.2. Setting: The study was conducted in the gynecology department of a university affiliated hospital. Intervention: We measured the length of the ovarian ligaments during laparoscopy. Patients: A total of 56 women were recruited, of which 28 women were operated for ovarian torsion (torsion group) and 28 others for other gynecologic conditions (control group). Measurement and Main Results: The study found correlations between ovarian ligament length and ovarian torsion. The length of the right (2.2 ± 0.6 cm) and left ovarian ligament (2.3 ± 0.8 cm) in the control patients were similar. Ovarian torsions occurred mainly on the right side (67.9 %). The right ovarian ligament was significantly longer in the torsion group (3.2 ± 0.9 cm) than in the control group (2.2 ± 0.6 cm; p < 0.001). Even after exclusion of patients with ovarian cyst, the ovarian ligament was still significantly longer in the torsion group as compared to the control group (3.2 ± 1.1 vs. 2.2 ± 0.6 cm respectively, p = 0.01). Conclusion: Our results suggest that increased length of ovarian ligament might be correlated with the development of ovarian torsion. This could be a basis for ovarian ligament fixation or oophoropexy at the time of conservative surgery for ovarian torsion.
Objective: To investigate the association between duration of ovarian torsion and levels of serum inhibin B in an animal model. Materials and Methods: An animal model prospective study was conducted in a tertiary referral hospital and chemical pathology institute. Nineteen female Lewis rats were divided to four groups. In the first group, the control group, laparotomies alone were performed. In groups 2-4 laparotomies and right ovarian torsion for 720 degrees with fixation of the adnexa to the parietal peritoneum were performed. Blood samples were taken from the rat groups at 12, 24, and 36 hours after laparotomy. Inhibin B levels were measured by ELISA. Results: Serum mean ± SD inhibin B level in the control rats during the beginning of the metesterus, 12, 24, and 36 hours later were 108.4 ± 43.6, 129.5 ± 49.3, 99.07 ± 60.50, and 91.58 ± 27.74 pg/ml, respectively. Inhibin B levels in the control group increased 12 hours after the beginning of the metesterus, whereas in the study group, a decline in inhibin B levels was found at the same time. This difference was significant (p = 0.05). Inhibin B levels at 24 and 36 hours from the beginning of the metestrus did not show statistical difference. Conclusions: Unilateral ovarian torsion in rats changed the pattern of inhibin B secretion at the beginning of the metesterus and was associated with a significant decrease in inhibin B serum levels. This observation, following acute ovarian vascular occlusion, is probably due the effects of ischemia on hormonal regulation during the early follicular phase.
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