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What is the best animal model for ACS?
A Schachtrupp1, J Wauters, A Wilmer
1Department of Surgery, Marien-Hospital, Duesseldorf, Germany. Alexander.Schachtrupp@post.rwth-aachen.de
Acta Clinica Belgica
|May 2, 2007
Summary
Animal models of abdominal compartment syndrome (ACS) lack standardized definitions and experimental designs. Future research should focus on developing pathological models to better understand ACS progression and treatment.
Area of Science:
- Critical care medicine
- Surgical research
- Animal modeling
Background:
- Current abdominal compartment syndrome (ACS) treatment relies on consensus, but critical questions about fluid management and intra-abdominal hypertension (IAH) thresholds remain.
- Prospective randomized trials addressing these issues are unlikely in the near future.
- This review synthesizes existing animal models of ACS to identify optimal experimental designs.
Purpose of the Study:
- To review and summarize current animal models of abdominal compartment syndrome (ACS).
- To outline the requirements for developing the most suitable animal model for ACS research.
- To highlight the variability in current experimental designs for inducing intra-abdominal hypertension (IAH).
Main Methods:
- A comprehensive literature search of the PubMed database was conducted.
- Articles describing animal models of abdominal compartment syndrome (ACS) were identified and analyzed.
- Key experimental parameters including animal species, body weight, intra-abdominal pressure (IAP) increase, duration of IAH, and time to organ dysfunction were extracted.
Main Results:
- Twenty-five articles on animal models of ACS were identified, revealing significant heterogeneity in experimental designs.
- No standardized definition for ACS in animal models currently exists.
- Intra-abdominal hypertension (IAH) was shown to induce intravascular volume loss, organ hypoperfusion, ischemic damage, and multiple organ failure within 4–6 hours across various animal models (rats, rabbits, dogs, pigs).
Conclusions:
- Abdominal compartment syndrome (ACS) in animals can be defined when artificially increased intra-abdominal pressure (IAP) results in circulatory, respiratory, and renal insufficiency.
- Future research should prioritize the development of "pathological" animal models.
- These advanced models should incorporate factors like hemorrhage or systemic inflammation alongside resuscitation to induce abdominal fluid accumulation and elevated IAP, mimicking clinical scenarios more closely.
