BACKGROUND: Abdominal compartment syndrome (ACS) sometimes occurs in critically ill patients following damage control surgery. The purpose of the present study was to develop a model of ACS and to evaluate its pathologic impact on liver, kidney, and lung morphology. METHODS: Twenty Wistar rats (mass 300-350 g) were randomly divided into four groups: 1) intra-abdominal hypertension (IAH): a laparotomy was performed and the abdomen packed with cotton until an intra-abdominal pressure (IAP) of 15 mm Hg was reached; 2) hypovolemia (HYPO): blood was withdrawn until a mean arterial pressure ~60 mm Hg was reached; 3) IAH + HYPO (to resemble clinical ACS); and 4) sham surgery. After 3 hours of protective mechanical ventilation, the animals were euthanized and the liver, kidney and lungs removed to examine the degree of tissue damage. RESULTS: IAH resulted in the following: oedema and neutrophil infiltration in the kidney; necrosis, congestion, and microsteatosis in the liver; and alveolar collapse, haemorrhage, interstitial oedema, and neutrophil infiltration in the lungs. Furthermore, IAH was associated with greater cell apoptosis in the kidney, liver and lungs compared to sham surgery. HYPO led to oedema and neutrophil infiltration in the kidney. The combination of IAH and HYPO resulted in all the aforementioned changes in lung, kidney and liver tissue, as well as exacerbation of the inflammatory process in the kidney and liver and kidney cell necrosis and apoptosis. CONCLUSIONS: Intra-abdominal hypertension by itself is associated with kidney, liver and lung damage; when combined with hypovolemia, it leads to further impairment and organ damage.
BACKGROUND:Abdominal compartment syndrome (ACS) sometimes occurs in critically illpatients following damage control surgery. The purpose of the present study was to develop a model of ACS and to evaluate its pathologic impact on liver, kidney, and lung morphology. METHODS: Twenty Wistar rats (mass 300-350 g) were randomly divided into four groups: 1) intra-abdominal hypertension (IAH): a laparotomy was performed and the abdomen packed with cotton until an intra-abdominal pressure (IAP) of 15 mm Hg was reached; 2) hypovolemia (HYPO): blood was withdrawn until a mean arterial pressure ~60 mm Hg was reached; 3) IAH + HYPO (to resemble clinical ACS); and 4) sham surgery. After 3 hours of protective mechanical ventilation, the animals were euthanized and the liver, kidney and lungs removed to examine the degree of tissue damage. RESULTS: IAH resulted in the following: oedema and neutrophil infiltration in the kidney; necrosis, congestion, and microsteatosis in the liver; and alveolar collapse, haemorrhage, interstitial oedema, and neutrophil infiltration in the lungs. Furthermore, IAH was associated with greater cell apoptosis in the kidney, liver and lungs compared to sham surgery. HYPO led to oedema and neutrophil infiltration in the kidney. The combination of IAH and HYPO resulted in all the aforementioned changes in lung, kidney and liver tissue, as well as exacerbation of the inflammatory process in the kidney and liver and kidney cell necrosis and apoptosis. CONCLUSIONS:Intra-abdominal hypertension by itself is associated with kidney, liver and lung damage; when combined with hypovolemia, it leads to further impairment and organ damage.
Authors: Mascha O Fiedler; Emilis Simeliunas; B Luise Deutsch; Dovile Diktanaite; Alexander Harms; Maik Brune; Maximilian Dietrich; Florian Uhle; Markus A Weigand; Armin Kalenka Journal: J Clin Med Date: 2021-01-15 Impact factor: 4.241
Authors: Silvia Marchesi; Göran Hedenstierna; Aki Hata; Ricardo Feinstein; Anders Larsson; Anders Olof Larsson; Miklós Lipcsey Journal: BMC Pulm Med Date: 2020-04-25 Impact factor: 3.317