Ascites is the buildup of excess fluid in the abdominal cavity.
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Ascites can be caused by:
- High blood pressure in the liver's portal venous system, which can be caused by:
- Malnutrition or other conditions leading to low amounts of protein in the blood
- Certain cancers
- Infections, such as certain bacteria and parasites, or tuberculosis that can invade the abdomen
- Kidney disease
- Abdominal leakage of lymph fluid
Factors that may increase your chance of ascites include having any of the conditions above.
Symptoms may include:
- Increased abdominal girth
- Shortness of breath
- Abdominal pain and/or distention
- Pain on the side of the abdomen
- Rapid weight gain
- Difficulty breathing while lying flat
- Decreased appetite
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
Tests to determine cause may include:
Imaging tests look for the amount and distribution of fluid, and evaluate abdominal structures. These may include:
Some treatments will vary according to what is causing the ascites. Talk with your doctor about the best treatment plan for you. Some options include:
- Sodium restriction—Limiting salt intake to 2,000 mg (milligrams) per day or fewer is often recommended to reduce or delay fluid buildup. More extreme restrictions in salt intake do not help.
- Fluid restriction—If sodium level is too low.
- Alcohol restriction—Ascites commonly occurs in people who have liver disease. Consuming excess alcohol can further impair liver function. Stopping alcohol use may limit the progression of ascites.
Diuretic medications cause the kidneys to excrete more sodium and water in the urine. These medications are often recommended as the treatment of choice for ascites, along with sodium restriction.
Ascites can be treated by inserting a hollow needle into the abdomen and removing excess fluid through the needle.
If the other treatments are not effective and the ascites keep coming back, surgery can be done to divert blood away from the liver. If this is not successful, a liver transplant may be necessary.
To help reduce the chance of ascites:
- Drink alcohol only in moderation. This means no more than 1 drink per day for women and 2 per day for men.
- Practice safe sex to avoid hepatitis.
- Do not share IV needles.
- Get vaccinated for hepatitis B.
- If you are taking medications that can damage your liver, follow your doctor's instructions closely.
- Michael Woods, MD
- Reviewed: 02/2016
- Updated: 05/16/2014
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