Given the interest in the need for hysteroscopy in infertility, we are having a brief discussion on this today. What is hysteroscopy? Simply put, it is a procedure in which an instrument is inserted into the uterine cavity and an external light source is used to visualize the inside of the uterine cavity and perform the appropriate examination or treatment. Hysteroscopy is more intuitive, accurate and reliable than traditional diagnostic curettage, hysterosalpingography (HSG) and ultrasound, and significantly improves the diagnostic accuracy. It can be seen that in the diagnosis of infertility, hysteroscopy is obviously superior to HSG, but it cannot replace HSG, and the two are complementary rather than competing technologies. Indications for infertility hysteroscopy: 1, those with abnormal uterine bleeding; 2, those with a history of complicated uterine or uterine surgery; 3, those with repeated pregnancy failure; 4, those with HSG suggesting uterine cavity abnormality or filling defect; 5, those who have not done hysteroscopy before, which can be carried out at the same time with laparoscopy; 6, those with unexplained infertility; and 7, those who have not done hysteroscopy before, and have failed IVF-ET. Common infertility factors found by hysteroscopy: 1, uterine fibroids: hysteroscopy plays an important role in deciding the location of fibroids, determining the need for surgery and choosing the surgical method; 2, uterine adhesions: uterine adhesions are a common problem in most patients with secondary infertility, as hysteroscopy can only show the uterine cavity below the level of the adhesions, so it is possible to have a combined hysteroscopy and ultrasound examination; 3, endometrial polyps: small polyps Ultrasound may not be able to sweep, but hysteroscopy can be clearly identified, and can specify the nature, decide the treatment method, or remove at the same time, the focus is also not to damage the lining; 4, congenital uterine anomalies: but not all uterine anomalies are symptomatic or caused by infertility; 5, intrauterine foreign body: occasional hysteroscopy can be found in the uterus foreign body to the intrauterine device residue is the most common, and occasionally see the fetal bone embryonic residue residue; 6, tubal blockage : Tubal pathology is the most common cause of infertility. Conventional HSG examination can not identify whether the fallopian tube is underfilled, tubal spasm or tubal obstruction, and through hysteroscopy can be performed tubal cannulation to diagnose tubal pathology or a step further to determine whether it is all or part of the proximal tubal pathology. Contraindications for hysteroscopy: 1, acute inflammation: acute endometritis, acute adnexitis, acute pelvic inflammatory disease; 2, massive uterine bleeding; 3, pregnancy; 4, chronic pelvic inflammatory disease. Hysteroscopy preoperative examination notes: 1, physical examination: routine examination of cardiopulmonary function, the presence of pelvic inflammatory disease and acute vaginitis; 2, laboratory tests: blood, urine routine, liver, kidney function, fasting blood sugar, coagulation function, hepatitis B complete set, hepatitis C, negative AIDS (HIV), syphilis (TRUST), blood type, vaginal secretions that is the ordinary leukorrhea examination, if necessary, take the cervical secretions for chlamydia, mycoplasma Check; 3, hysteroscopy time selection: except for special circumstances, generally about 3-10 days after menstruation is appropriate. The reason is: at this time, the endometrium is proliferative, the endometrium is thin, the mucus is less, it is not easy to bleed, and the lesions in the lumen are easy to be exposed; for those with irregular bleeding, they can be examined at any time after stopping bleeding.