Spontaneous bacterial peritonitis

DiseaseDisorder infobox
Name = Spontaneous bacterial peritonitis
ICD10 =
ICD9 = ICD9|567.23
eMedicineSubj = emerg
eMedicineTopic = 882

Spontaneous bacterial peritonitis (SBP) is a form of peritonitis that occurs in patients with cirrhosis. It occurs in 10-30% of hospitalized patients with ascites, and can cause marked decompensation of the liver disease, with other complications and death occurring frequently.

ymptoms

Symptoms include fevers, chills, nausea, vomiting, abdominal tenderness and general malaise. Patients may complain of abdominal pain and worsening ascites. Hepatic encephalopathy may be the only manifestation of SBP; in the absence of a clear precipitant for the encephalopathy, all patients should undergo paracentesis, or sampling of the ascites fluid, in order to assess for SBP.

Diagnosis

Diagnosis necessitates paracentesis (needle drainage of the ascitic fluid) and laboratory confirmation of ascitic neutrophils > 250/mm³.

Treatment

Antibiotics

After confirmation of SBP, patients need hospital admission for intravenous antibiotics (most often cefotaxime given as 1gm/12hours for 5 days or ceftriaxone). They will often also receive intravenous albumin. A repeat paracentesis in 48 hours is sometimes performed to ensure control of infection. Once patients have recovered from SBP, they require regular prophylactic antibiotics (e.g. Septra DS, Cipro, norfloxacin) as long as they still have ascites.

Intravenous albumin

A randomized controlled trial found that intravenous albumin on the day of admission and on hospital day 3 can reduce renal impairment.cite journal |author=Sort P, Navasa M, Arroyo V, "et al" |title=Effect of intravenous albumin on renal impairment and mortality in patients with cirrhosis and spontaneous bacterial peritonitis |journal=N. Engl. J. Med. |volume=341 |issue=6 |pages=403–9 |year=1999 |pmid=10432325 |doi=10.1056/NEJM199908053410603]

Prevention/screening

All cirrhotic patients might benefit from antibiotics if:
* Ascitic fluid protein <1.0 g/dLcite journal |author=Runyon BA |title=Low-protein-concentration ascitic fluid is predisposed to spontaneous bacterial peritonitis |journal=Gastroenterology |volume=91 |issue=6 |pages=1343–6 |year=1986 |pmid=3770358 |doi=] . Patients with fluid protein <15 g/L and either Child-Pugh score of at least 9 or impaired renal function may also benefit.cite journal |author=Fernández J, Navasa M, Planas R, "et al" |title=Primary prophylaxis of spontaneous bacterial peritonitis delays hepatorenal syndrome and improves survival in cirrhosis |journal=Gastroenterology |volume=133 |issue=3 |pages=818–24 |year=2007 |pmid=17854593 |doi=10.1053/j.gastro.2007.06.065]
* Previous SBPcite journal |author=Grangé JD, Roulot D, Pelletier G, "et al" |title=Norfloxacin primary prophylaxis of bacterial infections in cirrhotic patients with ascites: a double-blind randomized trial |journal=J. Hepatol. |volume=29 |issue=3 |pages=430–6 |year=1998 |pmid=9764990 |doi=]

Cirrhotic patients admitted to the hospital should receive antibiotics if:
* They have bleeding esophageal varicescite journal |author=Soares-Weiser K, Brezis M, Tur-Kaspa R, Leibovici L |title=Antibiotic prophylaxis for cirrhotic patients with gastrointestinal bleeding |journal=Cochrane database of systematic reviews (Online) |volume= |issue=2 |pages=CD002907 |year=2002 |pmid=12076458 |doi=10.1002/14651858.CD002907]

References