The Efficacy and Safety Study of a New Cross-linked Hyaluronan Hydrogel in the Reduction of Postsurgical Peritoneal Adhesions

Postsurgical adhesions are a common medical complication of gynecologic and pelvic surgeries, and are frequently associated with chronic or recurrent pelvic pain, intestinal obstruction and infertility. This randomized, controlled, multicenter, clinical study was designed to evaluate the safety and performance of the new crosslinked hyaluronan hydrogel versus the standard of care for the reduction of postoperative adhesions in subjects undergoing laparoscopic surgeries. Subjects were scheduled to return at 9 weeks after the initial surgical procedure. At that time, a second-look laparoscopy was performed for postsurgical adhesion assessment. Adhesions were graded using a modified American Fertility Society (mAFS) scoring system.

Inclusion criteria

• Female.
• Aged 18-45 years.
• Been scheduled for removal of myomas, ovary cysts, endometriotic cysts or adhesions.
• Been willing to comply with all aspects of the treatment and evaluation schedule.
• Agreed to a second-look laparoscopic procedure to assess and lyse any adhesions formed at 9 weeks following the primary surgery.
• Provided voluntary written informed consent.

Exclusion criteria

• Acute or severe infection.
• Autoimmune diseases such as diabetes etc.
• Abnormal liver/renal and cardiovascular function
• Abnormal blood coagulation
• Medical histories of peripheral vascular disease, alcohol or drug abuse, and mental illness.
• Known or suspected intolerance or hypersensitivity to hyaluronan or its derivatives.
• Concurrent use of systemic antiinflammatory drugs.
• Clinical evidence of cancer.
• Use of anticoagulant, fibrin glue, other thrombogenic agents, or any other anti-adhesion agent during the procedure.
• Concurrent peritoneal grafting or tubal implantation.