What is B-ultrasound

Ultrasound contrast imaging is the application of ultrasound contrast agents to traditional medical sonography, which relies on the different ways in which sound waves reflect from interfaces between substances. This could be the surface of a small bubble or a more complex structure. Common contrast agents are gas-filled microbubbles that are administered intravenously into the systemic circulation. The microbubbles are highly echogenic, and there is a large difference in echogenicity between the gas in the microbubbles and the soft tissue environment of the body. Thus, ultrasound imaging using microbubble contrast agents enhances ultrasound backscatter of ultrasound waves to produce a sonogram with increased contrast due to hyperechoic differences. So what is B-ultrasound?

Hysterosalpingography is a procedure in which contrast agents are injected into the uterine cavity and fallopian tubes via a catheter, and X-ray fluoroscopy and radiography are performed using an X-ray diagnostic apparatus. The unobstructed nature of the fallopian tubes, the location of obstruction, and the morphology of the uterine cavity are determined based on the contrast agent's appearance in the fallopian tubes and pelvic cavity.

The best time for contrast imaging is within 3 to 7 days after the menstrual period ends. Those with constipation should take laxatives the night before contrast imaging, or have a cleansing enema 2 hours before contrast imaging to clear out intestinal contents and make the film clear. Urinate before contrast imaging to avoid affecting the position of the uterus. Do an iodine allergy test before contrast imaging. If there is no allergy, then perform contrast imaging. Bathing and sexual intercourse are prohibited for two weeks after salpingography, and antibiotics may be given as appropriate to prevent infection.

1. Patient preparation before angiography :

1. Perform 3-7 days after menstruation ends.

2. Check the cleanliness of vaginal discharge.

3. Do not have sexual intercourse three days before the angiography.

4. No systemic or cardiovascular or other important organ diseases.

5. Inject 0.5 mg of atropine intramuscularly 30 minutes before angiography.

2. Possible complications and adverse drug reactions:

1. Abortion syndrome:

(1) Symptoms: nausea, vomiting, dizziness, low blood pressure, etc.

(2) Treatment measures: Ask the patient to lie flat, and the doctor will reduce the water bag to relieve the pressure of the water bag on the uterine wall.

2. Hyperventilation:

(1) Symptoms: dizziness, chest tightness, dyspnea, limb numbness, etc. In severe cases, it can lead to low blood pressure, insufficient blood supply to the brain, and even fainting.

(2) Treatment measures: You can cover your mouth and nose with a paper bag or a plastic bag to slow down the loss of carbon dioxide in the body, but it should not be used for a long time. Stop when you feel that the symptoms have improved slightly.

3. Side effects of atropine: During the angiography process, patients often experience symptoms such as dry mouth, facial flushing, and rapid heartbeat.

4. Adverse reactions to contrast agents:

(1) Mild: Headache, nausea, mild vomiting; mild urticaria; itching, heat sensation (can be relieved on its own)

(2) Moderate: severe vomiting; obvious urticaria; bronchospasm; facial/laryngeal edema.

(3) Severe: anaphylactic shock, etc.