Abdominal compartment syndrome

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Abstract

The abdominal compartment syndrome (ACS) was first described in surgical patients with abdominal aortic aneurysm repair, trauma, bleeding, or infection, but in recent years it has also been described in patients with other pathologies such as burn injury and sepsis and in medical patients. This F1000 Medicine Report is intended to provide critical care physicians a clear insight into the current state of knowledge regarding intra-abdominal hypertension (IAH) and ACS, and will focus primarily on the recent literature as well as on the definitions and recommendations published by the World Society of the Abdominal Compartment Syndrome. The definitions regarding increased intra-abdominal pressure (IAP) will be listed, followed by a brief but comprehensive overview of the different mechanisms of organ dysfunction associated with IAH. The gold standard measurement technique for IAP as well as recommendations for organ function support in patients with IAH and options for medical and surgical treatment of IAH and ACS will be discussed.

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Most cited references 61

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Results from the International Conference of Experts on Intra-abdominal Hypertension and Abdominal Compartment Syndrome. II. Recommendations.

Michael Cheatham, Manu Malbrain, Andrew Kirkpatrick … (2007)

Intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS) have been increasingly recognized in the critically ill over the past decade. In the absence of consensus definitions and treatment guidelines the diagnosis and management of IAH and ACS remains variable from institution to institution. An international consensus group of multidisciplinary critical care specialists convened at the second World Congress on Abdominal Compartment Syndrome to develop practice guidelines for the diagnosis, management, and prevention of IAH and ACS. Prior to the conference the authors developed a blueprint for consensus definitions and treatment guidelines which were refined both during and after the conference. The present article is the second installment of the final report from the 2004 International ACS Consensus Definitions Conference and is endorsed by the World Society of the Abdominal Compartment Syndrome. The prevalence and etiological factors for IAH and ACS are reviewed. Evidence-based medicine treatment guidelines are presented to facilitate the diagnosis and management of IAH and ACS. Recommendations to guide future studies are proposed. These definitions, guidelines, and recommendations, based upon current best evidence and expert opinion are proposed to assist clinicians in the management of IAH and ACS as well as serve as a reference for future clinical and basic science research.

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Different techniques to measure intra-abdominal pressure (IAP): time for a critical re-appraisal.

Manu Malbrain (2004)

The diagnosis of intra-abdominal hypertension (IAH) or abdominal compartment syndrome (ACS) is heavily dependent on the reproducibility of the intra-abdominal pressure (IAP) measurement technique. Recent studies have shown that a clinical estimation of IAP by abdominal girth or by examiner's feel of the tenseness of the abdomen is far from accurate, with a sensitivity of around 40%. Consequently, the IAP needs to be measured with a more accurate, reproducible and reliable tool. The role of the intra-vesical pressure (IVP) as the gold standard for IAP has become a matter of debate. This review will focus on the previously described indirect IAP measurement techniques and will suggest new revised methods of IVP measurement less prone to error. Cost-effective manometry screening techniques will be discussed, as well as some options for the future with microchip transducers.

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Esophageal and transpulmonary pressures in acute respiratory failure.

Todd Sarge, Alan Lisbon, Beate Ritz … (2006)

Pressure inflating the lung during mechanical ventilation is the difference between pressure applied at the airway opening (Pao) and pleural pressure (Ppl). Depending on the chest wall's contribution to respiratory mechanics, a given positive end-expiratory and/or end-inspiratory plateau pressure may be appropriate for one patient but inadequate or potentially injurious for another. Thus, failure to account for chest wall mechanics may affect results in clinical trials of mechanical ventilation strategies in acute respiratory distress syndrome. By measuring esophageal pressure (Pes), we sought to characterize influence of the chest wall on Ppl and transpulmonary pressure (PL) in patients with acute respiratory failure. Prospective observational study. Medical and surgical intensive care units at Beth Israel Deaconess Medical Center. Seventy patients with acute respiratory failure. Placement of esophageal balloon-catheters. Airway, esophageal, and gastric pressures recorded at end-exhalation and end-inflation Pes averaged 17.5 +/- 5.7 cm H2O at end-expiration and 21.2 +/- 7.7 cm H2O at end-inflation and were not significantly correlated with body mass index or chest wall elastance. Estimated PL was 1.5 +/- 6.3 cm H2O at end-expiration, 21.4 +/- 9.3 cm H2O at end-inflation, and 18.4 +/- 10.2 cm H2O (n = 40) during an end-inspiratory hold (plateau). Although PL at end-expiration was significantly correlated with positive end-expiratory pressure (p < .0001), only 24% of the variance in PL was explained by Pao (R = .243), and 52% was due to variation in Pes. In patients in acute respiratory failure, elevated esophageal pressures suggest that chest wall mechanical properties often contribute substantially and unpredictably to total respiratory impedance, and therefore Pao may not adequately predict PL or lung distention. Systematic use of esophageal manometry has the potential to improve ventilator management in acute respiratory failure by providing more direct assessment of lung distending pressure.