Postoperative pelvic adhesions represent a major challenge to the surgeon operating to correct or prevent infertility. Many approaches have been tried, but intraperitoneal treatment seems to be the most efficacious. Some major landmarks led to the development of the intraperitoneal substances currently used to prevent postoperative pelvic adhesions. On comparing the data on both animals and humans we see that high-molecular-weight dextran seems to be superior to other substances. Much work needs to be done to enhance this adjunctive therapy since excellent surgical technique alone seems insufficient. The future emphasis will probably be on these medications in conjunction with precise surgical techniques and adjunctive intraperitoneal therapy.
DeCherney, A. H. (1984). Preventing postoperative pelvic adhesions with intraperitoneal treatment. The Journal of reproductive medicine, 29(3), 157-161.
DeCherney, A. H. "Preventing postoperative pelvic adhesions with intraperitoneal treatment." The Journal of reproductive medicine, vol. 29, no. 3, 1984, pp. 157-161.
To evaluate the safety and efficacy of an oxidized, regenerated, cellulose adhesion barrier (Interceed TC7) in the reduction of pelvic adhesions. Clinical studies published or completed by December 31, 1994, evaluating the barrier used at laparotomy were considered for a metaanalysis. Of 10 studies (n = 560) identified, data from 7 (n = 389) met the inclusion criteria for determining the reduction in the incidence of adhesions and 5 (n = 311) for determining the reduction in adhesion extent (raw surface area after adhesiolysis). There was a 24.2 +/- 3.3% difference in the incidence of adhesions (P < .001) between barrier-treated and untreated sites. Adhesion-free outcomes were 1.5-2.5 times more likely at barrier-treated sites than at sites with good surgical technique alone (odds ratio = 2.89; 95% confidence interval = 2.15-3.90). Barrier treatment resulted in a greater reduction (1.1 +/- 0.4 cm2) in adhesion extent (raw surface area) than good surgical technique alone (P < .001). Four adverse events were recorded; they were typical of those seen after surgery. No event was considered to be definitely related to the use of the barrier. The barrier significantly reduced the incidence and extent of adhesions as compared with no treatment, confirming the conclusion from individual studies that it is safe and effective in pelvic laparotomy surgery.
The records of 139 consecutive patients who underwent major gynecologic abdominal surgery in which 32% dextran 70 was used as an antiadhesion adjuvant were carefully reviewed for the presence or absence of dextran-related complications. Eleven patients (8.0%) were thought to have dextran-related complications, including postoperative ileus (2.9%), pleural effusion (2.2%), allergic reactions (1.4%), wound infection (1.4%) and labial swelling (0.7%). The mean amount of dextran used was 183 mL. The study indicated that dextran can be used in moderate amounts when instilled intraperitoneally and has an acceptably low rate of complications. Since dextran is used often in spite of scanty evidence of its effectiveness as an antiadhesion adjuvant, understanding its safety and potential complications is especially important.
Yeung PP Jr et al., 2023·Front Reprod Health·
Open Access
Pregnancy rates after the placement of expanded polytetrafluoroethylene (ePTFE, trade name Gore-Tex®) for adhesion prevention following cystectomy of endometriomas ≥3 cm and excision of endometriosis were analyzed in this pilot study. A prospective cohort study was performed at a single tertiary care center. 56 women qualified for the study and underwent surgery. Expanded polytetrafluoroethylene placement around affected ovaries was self-selected. Inclusion criteria for analysis were pathology-confirmed endometrioma ≥3 cm, no hysterectomy at time of surgery, ≥1 year of postoperative survey completion, and absence of strategies to avoid pregnancy. 18 women in the ePTFE group and 11 women in the control group met inclusion criteria for analysis. 16 of the 18 women in the ePTFE group and 7 of the 11 women in the control group were affected by infertility. Absolute pregnancy rates and cumulative 4-year pregnancy rates, which are based on survival analysis using lifetables and adjust for varying follow-up times, were calculated for all women as well as for women with infertility only. High cumulative 4-year pregnancy rates were observed for women with expanded polytetrafluoroethylene compared to women without (85% vs. 65%, p = 0.69). High cumulative 4-year pregnancy rates for women with infertility prior to surgery were observed for women with expanded polytetrafluoroethylene compared to women without (83% vs. 33%, p = 0.89). There are consistent trends, although not statistically significant, seen in pregnancy rates for women with ePTFE compared to women without, particularly in those with a history of infertility prior to ePTFE use. This is the first study examining how adhesion prevention strategy targeting the adnexa during surgery for endometriosis affects pregnancy rates. The trend towards increased pregnancy rates with expanded polytetrafluoroethylene use, particularly in patients with a history of infertility, is promising and warrants further study with larger groups.
Somigliana E et al., 2012·J Minim Invasive Gynecol·
Prevention of adhesions, whether de novo or by re-formation, is one of the most important and surprisingly neglected aspect of the treatment of endometriosis. Adhesions may cause infertility, dyspareunia, chronic pelvic pain but also intestinal obstruction and complications at subsequent surgery. They may play a role in the development of some forms of the disease such as ovarian endometriomas and possibly also deep invasive nodules. Three randomized controlled trials have been published documenting some partial success with Interceed, Oxiplex/AP gel or Adept solution in reducing adhesions extent at second look laparoscopy performed a few weeks after initial surgery. However, data on relevant long-term outcomes such as fertility, pelvic pain or disease recurrences or other adhesions-related complications is lacking. Noteworthy, endometriosis is a chronic inflammatory disorder and the insult causing adhesions is expected to persist after surgery. Therefore preventing adhesion formation with exclusively agents at the time of surgery may be insufficient. Future studies should focus on a 2-step strategy that includes measures applied at the time of surgery and subsequent administration of agents able to prevent the development of new adhesions.