1.What is a tubal contrast (HSG) procedure?
A: HSG is performed by injecting contrast into the uterine cavity and fallopian tubes through a catheter, and taking X-ray fluoroscopy and radiographs to find out whether the fallopian tubes are patent, the site of obstruction and the morphology of the uterine cavity according to the contrast image in the fallopian tubes and pelvis. The test is less invasive and can make correct diagnosis of tubal obstruction with an accuracy rate as high as 80%, and has certain therapeutic effects.
2.Why is this test necessary?
A: Among female infertility, ovulation and tubal factors are the most common. The fallopian tubes have the function of collecting eggs, transporting sperm and early embryos, and are sometimes the normal site of fertilization. Abnormal or non-specific inflammation of the fallopian tubes, various traditional surgeries of the fallopian tubes, and even post-surgical adhesions of peri-tubal lesions such as adnexal organs may lead to mechanical blockage of the fallopian tubes, or affect the peristaltic function of the fallopian tubes and the egg pick-up function of the umbilical end, resulting in infertility. Therefore, in order to check the patency and peristaltic function of the fallopian tubes in infertility, tubal imaging is necessary to understand the condition of the fallopian tubes and prepare for further treatment.
3. Which conditions are not suitable for this test?
A: 1. Acute or subacute inflammation of the internal and external genitalia;
2.Serious systemic diseases that cannot tolerate the procedure;
3.Pregnancy period, menstruation period;
4, postpartum, abortion, scraping within 6 weeks after the operation;
5.Iodine allergy.
4.What should I pay attention to if I do this examination?
A: 1. Since the time of imaging is 3~5 days after menstruation, and each patient’s menstrual cycle is different, you must make an appointment with the doctor who will do the examination on the first day after menstruation, so that we can arrange a safer time for you to do the examination with more ideal imaging results.
2.No intercourse after the appointment and two weeks after the imaging.
3.Eat a light diet on the day of the imaging procedure, do not consume intestinal gas-producing foods (such as soy milk), and try to clear your bowels before the examination.
4.Because the vaginal irrigation and disinfectant will flow out from the vagina after the imaging, which will make you feel inconvenient, so please bring your own sanitary napkin and try to bring a family member with you.
5.After the imaging procedure, the cervical traction may cause parasympathetic excitation, vomiting, sweating, abdominal pain and other reactions, but generally it will not affect your body.
6, 24 hours after the contrast, if the use of iodine oil contrast patients must come to the hospital film review, if the use of imported water contrast in the same day after the examination within twenty minutes after the review, the next day without review.
7. A small amount of bleeding (less than menstrual volume) after the procedure is a normal reaction, but if the bleeding volume is higher, please go to the gynecology department for examination in time.
5.What is the difference between domestic liquefied iodine oil (oil) and non-ionic contrast agent (water)?
A: Domestic liquefied iodine oil: advantages: cheaper, better and more accurate display of uterine tube morphology, less likely to have contrast agent reversed into the uterine interstitium. Disadvantages: The reaction rate is higher than that of non-ionic contrast media, and it needs to be reviewed when 24 hours old. Non-ionic contrast agent (aqueous): advantages: safe and reliable, less chance of side effects, time saving (can be reviewed after 20 minutes after the examination, no need to review the next day). Disadvantages: the contrast effect is not as good as that of oil, and it is easy to enter the uterus and the myometrium of the fallopian tubes to affect the contrast effect. Usually the interventional surgeon can choose the appropriate contrast agent for you.