tubal ventilation test

The fallopian tube ventilation test is a metal catheter with a conical rubber plug. It is inserted into the cervical canal and the vaginal immersion rubber plug is injected into the vagina to detect whether there is air leakage during ventilation. A carbon dioxide gas storage cylinder equipped with a pressure gauge and a mediator is externally connected, and the injection speed is 20-40 ml/min, and the total amount is ≤200 ml. Basic Information Specialist classification: gynecological examination classification: other inspection Applicable gender: whether women are fasting: not fasting Tips: It is advisable to check 3-7 days after menstruation is clean. Normal value When the pressure of injecting carbon dioxide reaches 8-16 kPa (60-120 mmHg), the pressure starts to drop, and the gas is stopped to observe the pressure change, such as natural drop to 4 to 6.7 kPa, indicating that the fallopian tube is unobstructed. If the pressure does not drop, continue to inject carbon dioxide, when the pressure reaches 26.7kPa (200mmHg) can not fall, suggesting that the fallopian tube is blocked. At the same time, the auscultation can be performed on both sides of the lower abdomen. If the sound of the air bubbles is heard, the side of the fallopian tube is unobstructed. After the operation, the gas entering the abdominal cavity rises and accumulates under the diaphragm. It causes shoulder acid discomfort; if the x-ray abdominal fluoroscopy is performed immediately, the free gas under the armpit is seen, which can further prove that the fallopian tube is open. Clinical significance Check whether the fallopian tube is unobstructed and dredge the mild adhesion of the fallopian tube. High results may be diseases: hydrosalpinx, tubal obstruction infertility precautions [Time selection] 3-7 days after menstruation is clean. (1) Before the operation, the instrument is checked to allow the gas to pass through the cervical canal and the patency is confirmed. (2) The cervix catheter must be in close contact with the external cervix during ventilation to avoid air leakage. (3) When ventilation, the speed should not be too fast (60ml/min is appropriate), and pay attention to the patient's feeling at any time. Generally, the pressure should be stopped 10mmHg, and the maximum gas pressure should not exceed 200mmHg, so as to avoid injury or rupture of the fallopian tube wall, or even cause Internal bleeding. (4) If the ventilation pressure is not high, it may cause discomfort to the patient, which may be caused by a temporary fallopian tube. It can be confirmed by intramuscular injection of atropine 0.5mg. (5) If the test is to be repeated, the gas should be released first, and then rested for a while, and the general repetition should not exceed two. (6) Antibiotics may be applied as appropriate after surgery. (7) In the case of severe stimuli, the shock may sometimes occur. Patients should be allowed to take the head low hip height, so that the gas in the abdominal cavity tends to the pelvic cavity, which can reduce the irritation, and often the symptoms can be alleviated. Inspection process 1. Empty the bladder, take the bladder lithotomy position, disinfect the vulva and vagina, and sterilize the surgical towel. 2. Double-checking to understand the size, azimuth, texture, activity, shape and relationship with the surrounding organs, and whether there are any abnormalities on both sides of the attachment. 3. Place the speculum, expose the cervix, disinfect the vagina and the cervix, clamp the front lip with a cervical clamp, and pull outward to make the uterus horizontal. 4. Use the uterus probe to gently probe the uterus in the direction of the uterus, measure its depth and confirm whether the degree of flexion and size are consistent with the examination. If there is resistance, it is not possible to detect it. You can change the direction to find the position of the uterus without resistance and variation. It is clear whether there is a feeling of resistance to the probe caused by unevenness or adhesion of the inner wall and tumor compression. 5. Check that the ventilation device is perfect and should not leak air. 6. Insert the uterine ventilation catheter into the neck tube in the direction of the probe detection and fix it at a preselected depth. Use the tissue forceps to clamp the anterior lip of the cervix, and while pulling the cervix outward, push the conical head of the inflation catheter inward. The two are tightly fitted, and the air can be squeezed by the air to gradually increase the pressure to 26.66 kPa (200 mmHg). ); if CO2 ventilation device, open the valve, the pressure is controlled at 39.9 ~ 53.2kPa (300 ~ 400mmHg), so that the gas enters the uterine cavity. Not suitable for the crowd 1. The menstrual cycle disorder has not been corrected. 2. There is a genital tumor in the pelvic cavity. 3. In the acute phase of genital inflammation or chronic recurrent episodes, drug treatment has not been controlled. 4. The general condition is poor, and there are serious diseases such as heart, brain, lung, liver and kidney. 5. It has been clearly identified as a male infertility. Adverse reactions and risks It may cause accidents such as chest tightness, shortness of breath, convulsions and even coma.