Knowledge | Understanding HSG: How Are Blocked Fallopian Tubes Diagnosed?
Several parts of the body must work together for pregnancy to occur. The ovaries must release an egg each month, the uterus must be healthy, and the fallopian tubes must be open. A problem with any of these organs can make conception difficult.
If a fallopian tube is blocked, sperm cannot reach the egg or a fertilized egg cannot enter the uterus. Blockage has many possible causes, but physicians diagnose it with a test called hysterosalpingography (HSG).
1. What Is Hysterosalpingography (HSG)?
HSG is an X-ray procedure used to examine the fallopian tubes and uterus. It usually takes less than five minutes, and the patient can go home afterward. It is generally performed after menstruation ends but before ovulation, when pregnancy is less likely, usually during days 1 to 14 of the menstrual cycle.
2. How Should You Prepare for HSG?
Before HSG, the physician may recommend an over-the-counter pain reliever one hour before the test and may prescribe antibiotics. These recommendations will be discussed in advance. Patients can usually drive themselves home afterward, but a friend or family member can provide transportation if needed.
How Is HSG Performed?
A gynecologist performs the test in a clinic or outpatient setting. The patient lies on an examination table beneath a fluoroscopy machine. The physician inserts a speculum to hold the vagina open and cleans the cervix. A thin tube called a cannula is then inserted through the cervix, and the speculum is removed. An iodine-containing contrast liquid is injected into the uterus, outlining the uterus and fallopian tubes on X-ray images.
Using fluoroscopy, the physician takes images showing the outlines of the uterus and fallopian tubes and the flow of the liquid through them. The patient may be asked to move slightly to obtain side views and may experience some cramping. Once imaging is complete, the cannula is removed.
Light vaginal bleeding may occur for several days after the test. Cramping, dizziness, and abdominal discomfort are also possible.
3. What Are the Risks of HSG?
HSG is relatively safe, but all medical procedures carry some risk. An allergy to iodine contrast may cause problems. Pelvic infection or uterine injury is also possible. Patients should contact a physician immediately if they experience:
Foul-smelling vaginal discharge
Fainting
Severe abdominal pain or cramping
Vomiting
Heavy vaginal bleeding
Fever
Results
A radiologist reviews the X-ray images and sends a report to the patient's physician. The physician discusses the results and explains whether further testing is needed. If the report shows blocked fallopian tubes, laparoscopy may be recommended to examine them directly. In vitro fertilization (IVF) may also be discussed. The physician will review all options to help the patient make an appropriate decision.
Knowledge | Understanding HSG: How Are Blocked Fallopian Tubes Diagnosed?
Knowledge | Understanding HSG: How Are Blocked Fallopian Tubes Diagnosed?
Several parts of the body must work together for pregnancy to occur. The ovaries must release an egg each month, the uterus must be healthy, and the fallopian tubes must be open. A problem with any of these organs can make conception difficult.
If a fallopian tube is blocked, sperm cannot reach the egg or a fertilized egg cannot enter the uterus. Blockage has many possible causes, but physicians diagnose it with a test called hysterosalpingography (HSG).
1. What Is Hysterosalpingography (HSG)?
HSG is an X-ray procedure used to examine the fallopian tubes and uterus. It usually takes less than five minutes, and the patient can go home afterward. It is generally performed after menstruation ends but before ovulation, when pregnancy is less likely, usually during days 1 to 14 of the menstrual cycle.
2. How Should You Prepare for HSG?
Before HSG, the physician may recommend an over-the-counter pain reliever one hour before the test and may prescribe antibiotics. These recommendations will be discussed in advance. Patients can usually drive themselves home afterward, but a friend or family member can provide transportation if needed.
How Is HSG Performed?
A gynecologist performs the test in a clinic or outpatient setting. The patient lies on an examination table beneath a fluoroscopy machine. The physician inserts a speculum to hold the vagina open and cleans the cervix. A thin tube called a cannula is then inserted through the cervix, and the speculum is removed. An iodine-containing contrast liquid is injected into the uterus, outlining the uterus and fallopian tubes on X-ray images.
Using fluoroscopy, the physician takes images showing the outlines of the uterus and fallopian tubes and the flow of the liquid through them. The patient may be asked to move slightly to obtain side views and may experience some cramping. Once imaging is complete, the cannula is removed.
Light vaginal bleeding may occur for several days after the test. Cramping, dizziness, and abdominal discomfort are also possible.
3. What Are the Risks of HSG?
HSG is relatively safe, but all medical procedures carry some risk. An allergy to iodine contrast may cause problems. Pelvic infection or uterine injury is also possible. Patients should contact a physician immediately if they experience:
Foul-smelling vaginal discharge
Fainting
Severe abdominal pain or cramping
Vomiting
Heavy vaginal bleeding
Fever
Results
A radiologist reviews the X-ray images and sends a report to the patient's physician. The physician discusses the results and explains whether further testing is needed. If the report shows blocked fallopian tubes, laparoscopy may be recommended to examine them directly. In vitro fertilization (IVF) may also be discussed. The physician will review all options to help the patient make an appropriate decision.
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