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Cirrhosis Complications: Spontaneous Bacterial Peritonitis

Spontaneous bacterial peritonitis (SBP) is an infection of the fluid that builds up in the belly. It causes pain and swelling inside the belly. It may also cause a fever. Sometimes there are no symptoms.

This infection most often occurs in people with other health problems that cause fluid to build up in the belly. These can include cirrhosis, kidney failure, heart failure, and some cancers. Sometimes the fluid builds up without a clear cause.

This infection is serious and needs medical care right away. If it is not treated, the infection can quickly get worse and be life-threatening. Most people can be treated with antibiotics and get better.

How is it treated?

The infection is usually treated with antibiotics. Your doctor may do a procedure called paracentesis (say "pair-uh-sen-TEE-sus") to get a sample of fluid from your belly. The fluid can be tested to help find the cause of your symptoms. It can also help your doctor decide which medicines will work best to treat the infection. Paracentesis also drains the fluid to relieve belly pressure or pain.

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Current as of: February 27, 2026

Author: WebMD Ignite Staff
Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Current as of: February 27, 2026

Author: WebMD Ignite Staff

Clinical Review Board
All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.