Spontaneous bacterial peritonitis: Difference between revisions
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= Spontaneous bacterial peritonitis (SBP) = |
= Spontaneous bacterial peritonitis (SBP) = |
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= Definition = |
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* Primary infection of the ascitic fluid |
* Primary infection of the ascitic fluid |
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= Pathophysiology = |
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* Intestinal bacterial overgrowth with increased intestinal permeability leads to translocation to intestinal lymph notes and bloodstream, which results in hematogenous seeding to ascitic fluid |
* Intestinal bacterial overgrowth with increased intestinal permeability leads to translocation to intestinal lymph notes and bloodstream, which results in hematogenous seeding to ascitic fluid |
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* Only occurs in portal hypertension, not in other causes of ascites |
* Only occurs in portal hypertension, not in other causes of ascites |
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= Bacteriology = |
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* ''Escherichia coli'' (43%) |
* ''Escherichia coli'' (43%) |
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** ''Aeromonas hydrophila'', in Korean |
** ''Aeromonas hydrophila'', in Korean |
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= Risk Factors = |
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* Previous history of SBP |
* Previous history of SBP |
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* Child-Pugh class |
* Child-Pugh class |
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= Presentation = |
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* Asymptomatic in 10% |
* Asymptomatic in 10% |
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* Hypothermia (15%) |
* Hypothermia (15%) |
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= Investigations = |
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* Labs |
* Labs |
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* Other |
* Other |
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= Management = |
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* Acute |
* Acute |
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* Some role for primary prophylaxis, I think? |
* Some role for primary prophylaxis, I think? |
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= Prognosis = |
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* In-hospital mortality of about 33% in hospital |
* In-hospital mortality of about 33% in hospital |
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* 58% 6-month mortality |
* 58% 6-month mortality |
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[[Category:Intra-abdominal infections]] |
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== Further Reading == |
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Revision as of 01:33, 15 August 2019
Spontaneous bacterial peritonitis (SBP)
Definition
- Primary infection of the ascitic fluid
Pathophysiology
- Intestinal bacterial overgrowth with increased intestinal permeability leads to translocation to intestinal lymph notes and bloodstream, which results in hematogenous seeding to ascitic fluid
- Only occurs in portal hypertension, not in other causes of ascites
Bacteriology
- Escherichia coli (43%)
- Klebsiella pneumoniae (11%)
- Streptococcus pneumoniae (9%)
- Other streptococcal species (19%)
- Enterobacteriaceae (4%)
- Staphylococcus (3%)
- Pseudomonas (1%)
- Miscellaneous (10%)
- Aeromonas hydrophila, in Korean
Risk Factors
- Previous history of SBP
- Upper GI bleed
- Low sciatic protein
- Child-Pugh class
Presentation
- Asymptomatic in 10%
- Fever (70%)
- Abdominal pain (60%)
- Hepatic encephalopathy (50%)
- Abdominal tenderness, usually without rigidity (50%)
- Diarrhea (30%)
- Ileus (30%)
- Shock (20%)
- Hypothermia (15%)
Investigations
- Labs
- Ascitic fluid for cell count and culture
- Neutrophil count < 250 rules it out
- Culture usually monomicrobial
- Repeat paracentesis at 48h if ongoing concern
- Ascitic fluid for cell count and culture
- Imaging
- Other
Management
- Acute
- Ceftriaxone 1-2g IV q24h
- Chronic
- Prophylaxis after a single episode
- Septra SS PO daily
- Norfloxacin
- Prophylaxis after a single episode
- Some role for primary prophylaxis, I think?
Prognosis
- In-hospital mortality of about 33% in hospital
- 58% 6-month mortality
