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If you're pregnant with twins, you'll want to carefully consider this advice. It can help increase your chances for a full-term pregnancy.

A kidney ultrasound is an imaging test that uses sound waves to look at your kidneys. It can check the size, shape, and location of your kidneys. It also lets your healthcare provider see how well blood is flowing in your kidneys.

In cardiac catheterization (often called cardiac cath), a very small hollow tube, or catheter, is advanced from a blood vessel in the groin, arm, or neck through the aorta into the heart. Once it is in place, several diagnostic and treatment procedures can be done using catheterization.

A dobutamine stress echocardiogram is a diagnostic test to assess the heart muscle under stress. If exercise on a treadmill is not an option (too much stress on the heart) due to a person's medical condition, a doctor may use an intravenous medicine called dobutamine. Dobutamine causes the heart to beat faster and will mimic the effects of exercise on the heart.

A renal venogram is an imaging test to look at the veins in and around your kidneys. Your doctor may also use the test to find out what is causing your high blood pressure (hypertension).

A liver biopsy is a test used to diagnose liver conditions. Read on to learn more about the procedure.

An episiotomy is an incision through the area between your vaginal opening and your anus. This area is called the perineum. This procedure is done to make your vaginal opening larger for childbirth.

Laparoscopy uses a thin lighted tube that has a video camera. The tube is called a laparoscope. It is put into a tiny cut or incision in your belly. The video camera images can be seen on a computer screen.

An echocardiogram is a noninvasive (the skin is not pierced) procedure used to evaluate the heart's function and structures.