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Concept
Multiple organ dysfunction syndrome
Summary
Multiple organ dysfunction syndrome (MODS) is altered organ function in an acutely ill patient requiring medical intervention to achieve homeostasis.
Although Irwin and Rippe cautioned in 2005 that the use of "multiple organ failure" or "multisystem organ failure" should be avoided, both Harrison's (2015) and Cecil's (2012) medical textbooks still use the terms "multi-organ failure" and "multiple organ failure" in several chapters and do not use "multiple organ dysfunction syndrome" at all.
There are different stages of organ dysfunction for certain different organs, both in acute and in chronic onset, whether or not there are one or more organs affected. Each stage of dysfunction (whether it be the heart, lung, liver, or kidney) has defined parameters, in terms of laboratory values based on blood and other tests, as to what it is (each of these organs' levels of failure is divided into stage I, II, III, IV, and V). The word "failure" is commonly used to refer to the later stages, especially IV and V, when artificial support usually becomes necessary to sustain life; the damage may or may not be fully or partially reversible.
The condition results from infection, injury (accident, surgery), hypoperfusion and hypermetabolism. The primary cause triggers an uncontrolled inflammatory response.
Sepsis is the most common cause of multiple organ dysfunction syndrome and may result in septic shock. In the absence of infection, a sepsis-like disorder is termed systemic inflammatory response syndrome (SIRS). Both SIRS and sepsis could ultimately progress to multiple organ dysfunction syndrome. In one-third of the patients, however, no primary focus can be found. Multiple organ dysfunction syndrome is well established as the final stage of a continuum: SIRS + infection → sepsis → severe sepsis → Multiple organ dysfunction syndrome.
Currently, investigators are looking into genetic targets for possible gene therapy to prevent the progression to multiple organ dysfunction syndrome.
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