The process and precautions of fallopian tube angiography under B-ultrasound

B-ultrasound can check many organs of the body and is a very effective examination. At present, B-ultrasound hysterosalpingography is the most commonly used gynecological examination method. It can clearly find the organs to be examined and can accurately judge when there are abnormalities. What we need to understand is the process of the examination and the precautions during the examination. Only then can the patient feel at ease to do the examination. So what are the main processes and precautions of B-ultrasound hysterosalpingography?

The process of salpingography:

The first step is to dilate the vagina and expose the cervix. The cervix and fornix are disinfected with iohexol, the cervical catheter is filled with iohexol, the air in the tube is removed, the cervical canal is inserted along the direction of the uterine cavity, and the cervical clamp is tightened so that the conical rubber head of the catheter fits tightly against the cervix to prevent the drug from flowing out.

The second step is that during the hysterosalpingography examination, the patient lies on his back on the X-ray machine operating platform, routinely disinfects the vulva and vagina, then lays a sterile towel, and then checks the position and size of the uterus.

The third step is to observe the contrast agent flowing through the uterine cavity under X-ray fluoroscopy, and slowly inject iodized oil under fluorescent fluoroscopy. The first injection volume is 3-5 ml. Observe its entry into the uterus and flow through the fallopian tubes. At this time, a picture will be taken and then iodized oil will continue to be pushed in. The film will continue after 5-10 minutes.

The fourth step is to take another picture at the same location one day later, and then observe whether there is free iohexol in the abdominal cavity. If both fallopian tubes are blocked, there will be no iodized oil in the pelvic cavity. If there is only a small amount of iohexol, it can be considered that the fallopian tubes are obstructed.

Precautions for salpingography:

1. The best time for surgery is 3 to 7 days after the patient's menstruation ends. Sexual intercourse is prohibited 5 days before surgery.

2. Atropine 0.5 mg can be injected within half an hour before the operation to reduce fallopian tube spasm.

3. The patient empties his bladder.

4. Ask whether there is a history of iodine allergy. An iodine allergy test is performed half an hour before imaging. Generally, a skin scratch test is performed by applying 2.5% iodine tincture to the flexor surface of the forearm with a diameter of about 2 to 3 cm. A scratch is made on it and the redness or swelling is observed after 20 minutes. Conjunctival testing or venous testing may also be done. Conjunctival test (conjunctival instillation method): Instill contrast agent into the conjunctiva of one eye. After 15 minutes, observe whether the conjunctiva is congested, red and swollen, and compare it with the side without drug instillation. If so, it is positive. Intravenous test (intravenous injection method): 1 ml of 30% contrast agent of the same batch is injected intravenously. If there is no reaction after 15 minutes, it is negative. If urticaria, sneezing, chest tightness, metallic taste in the mouth, laryngeal edema, etc. occur, it is positive.

5. Patients with constipation can take laxatives orally before surgery to keep the uterus in a normal position and avoid the false impression of external pressure.

Hysterosalpingography under B-ultrasound can clearly detect abnormalities in the examination area. If there is a disease, treatment can be taken immediately. If the patient undergoes treatment under this examination, it is also acceptable. It can reduce the risk of surgery and is a very mature gynecological examination. When the patient cannot be diagnosed with the disease after examination, other examinations can be used. The patient must accurately diagnose the disease for treatment and must not blindly use drugs indiscriminately, which will aggravate the patient's disease.