Endometriosis can make it extremely difficult or impossible to conceive without advanced medical care and fertility treatment. Researchers from the Nanjing Medical University in China evaluated more than 300 patients who presented with infertility related to endometriosis in a study published in the Chinese journal Zhonghua Fu Chan Ke Za Zhi.
Patient data included in the study was collected between 2007 and 2011. Participants were split into two groups, non-pregnancy and clinical pregnancy. Factors researchers noted included age, follicle stimulating hormone, body mass index, antral follicle count, endometriotic stage, CA125, CA199 and surgical history, among others.
Conclusion: Researchers found a significant link between year of infertility, endometrial stage and surgical history and clinical pregnancy rates. Patients who underwent surgery were more likely to become pregnant than patients who did not undergo surgery. Patients who experienced fewer infertile years were also more likely to achieve pregnancy.
Source: Hou Z, Mao YD, Liu JY. Study on the factors associated with clinical pregnancy rate of in-vitro fertilization in endometriosis related infertility. Zhonghua Fu Chan Ke Za Zhi. 2013 Jan;48(1):6-10.