[Tertiary peritonitis: as difficult to define as it is to treat]
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Updated: Jun 4, 2026

Colon Ascendens Stent Peritonitis (CASP) - a Standardized Model for Polymicrobial Abdominal Sepsis
Published on: December 18, 2010
Alejandro Martín-López1, Sergio Castaño-Ávila, Francisco Javier Maynar-Moliner
1Servicio de Medicina Intensiva, Hospital Santiago, Vitoria-Gasteiz, Álava, España. alejandro.martinlopez@hotmail.com
Insights
Tertiary peritonitis, a severe complication of intra-abdominal infections, lacks a clear definition, complicating diagnosis and treatment. Prevention is crucial due to its high mortality rate.
Area of Science:
- Infectious Diseases
- Surgical Pathology
- Critical Care Medicine
Context:
- Tertiary peritonitis represents a severe, delayed complication arising from complicated intra-abdominal infections.
- Diagnosis and management are hindered by the absence of a universally accepted definition.
- This condition necessitates aggressive, multidisciplinary interventions.
Purpose:
- To provide a comprehensive review of tertiary peritonitis, addressing its definitions, risk factors, pathophysiology, and microbiological aspects.
- To highlight the challenges in diagnosing and treating this severe clinical condition.
- To emphasize the critical role of prevention strategies.
Summary:
- Tertiary peritonitis is characterized by persistent infection despite initial treatment, often involving multi-resistant bacteria.
- Management includes early, repeated surgeries, broad-spectrum antibiotics, and intensive supportive care.
- Despite maximal interventions, mortality rates remain high, underscoring the importance of preventative measures.
Impact:
- This review aims to standardize the understanding and approach to tertiary peritonitis, potentially improving patient outcomes.
- Clarifying diagnostic criteria and treatment protocols can lead to more effective management strategies.
- Highlighting preventative measures may reduce the incidence and associated mortality of this severe condition.
Abstract:
Tertiary peritonitis is the most delayed and severe outcome of patients with complicated intra-abdominal infections. The major difficulty lies in giving a common, precise and consensus definition in order to know when to make its diagnosis and how it can be avoided and/or treated. This condition requires early and repeated surgery, wide spectrum antibiotic therapy against multi-resistant bacteria and intensive systemic support measures. Despite all this, the prognosis is extremely poor since it has a mortality which can reach up to 60%, with preventions being the most important measure to avoid it developing. In this article, we have made a specific review of tertiary peritonitis, of the accepted definitions, the risk factors, its pathophysiology, the microbiological flora involved, and its treatment.
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