Acute respiratory distress syndrome differential diagnosis: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{Acute respiratory distress syndrome}} | {{Acute respiratory distress syndrome}} | ||
{{CMG}} {{AE}} {{BShaller}} | {{CMG}}; {{AE}} {{BShaller}} | ||
==Overview== | ==Overview== | ||
ARDS must be differentiated from other diseases that cause [[hypoxemia]] and pulmonary infiltrates, such as | ARDS must be differentiated from other diseases that cause [[hypoxemia]] and pulmonary infiltrates, such as pulmonary edema, diffuse pneumonia, alveolar hemorrhage, [[interstitial lung disease]], and [[radiation pneumonitis]]. | ||
==Differentiating ARDS from Other Diseases== | ==Differentiating ARDS from Other Diseases== | ||
Prior to the development of the [[Acute respiratory distress syndrome diagnostic criteria|Berlin definition]], a greater emphasis was placed on excluding other potential illnesses before establishing the diagnosis of ARDS. While it is important to recognize and treat and underlying cause of the patient's impaired [[ventilation]] and [[hypoxemia]], this search for potential etiologies should not delay any focused efforts to improve [[oxygenation]] and [[ventilation]]. | |||
ARDS must be differentiated from other diseases that cause [[hypoxemia]] and pulmonary infiltrates, such as: | ARDS must be differentiated from other diseases that cause [[hypoxemia]] and pulmonary infiltrates, such as: | ||
*Infectious [[pneumonia]] (bacterial, fungal, viral, or parasitic) | *Infectious [[pneumonia]] (bacterial, fungal, viral, or parasitic) | ||
Revision as of 03:47, 18 July 2016
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Brian Shaller, M.D. [2]
Overview
ARDS must be differentiated from other diseases that cause hypoxemia and pulmonary infiltrates, such as pulmonary edema, diffuse pneumonia, alveolar hemorrhage, interstitial lung disease, and radiation pneumonitis.
Differentiating ARDS from Other Diseases
Prior to the development of the Berlin definition, a greater emphasis was placed on excluding other potential illnesses before establishing the diagnosis of ARDS. While it is important to recognize and treat and underlying cause of the patient's impaired ventilation and hypoxemia, this search for potential etiologies should not delay any focused efforts to improve oxygenation and ventilation.
ARDS must be differentiated from other diseases that cause hypoxemia and pulmonary infiltrates, such as:
- Infectious pneumonia (bacterial, fungal, viral, or parasitic)
- Aspiration pneumonitis (chemical pneumonia)
- Acute eosinophilic pneumonia
- Pulmonary contusion
- Cardiogenic pulmonary edema
- Hypersensitivity pneumonitis
- Pulmonary hemorrhage
On chest x ray, the bilateral, non-cardiogenic pulmonary infiltrates of ARDS may appear similar to those of cardiogenic (hydrostatic) pulmonary edema. Therefore, it is necessary to formally assess cardiac function and volume status if ARDS is suspected but no clear precipitating insult (e.g., sepsis, trauma, toxic inhalation) can be identified. The preferred methods for making this assessment in the ICU are:
- Echocardiography to assess heart function
- Central venous catheterization to measure central venous pressure
- Pulmonary artery (Swan-Ganz) catheterization to measure right-sided heart pressures and pulmonary capillary wedge pressure (a surrogate of left atrial pressure)