Pulmonary edema laboratory tests: Difference between revisions

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==== ABGs: ====
==== ABGs: ====
Hypoxia (oxygen saturation < 90% and PaO2 < 60 mm Hg)
* [[Hypoxia]] :
** [[Oxygen saturation]] < 90%  
** [[PaO2]] < 60 mm Hg)
 
* [[Hypercapnia]]:
** [[CO2]] > 45–55 mm Hg
 
* [[Acidosis]]:
** PH < 7.35 nEq/liter
** Early findings of pulmonary edema may be [[respiratory alkalosis]] because of [[hyperventilation]]


==== Serum albumin: ====
==== Serum albumin: ====

Revision as of 14:29, 23 February 2018

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Farnaz Khalighinejad, MD [2]


Overview

Laboratory Findings

Laboratory findings consistent with the diagnosis of pulmonary edema include:[1][2]

ABGs:

Serum albumin:

Liver function tests:

Plasma brain natriuretic peptide levels :

B-type natriuretic peptide (BNP) is elevated in the patient with cardiogenic pulmonary edema. A low BNP (<100 pg/ml) makes a cardiac cause very unlikely and is associated with non-cardiogenic pulmonary edema.

Differentiation of cardiogenic pulmonary edema and noncardiogenic pulmonary edema
Laboratory findings ECG CXR Cardiac enzymes PCWP QS/QT Edema fluid/serum protein
Cardiogenic pulmonary edema Ischemia/Infarct Peri-hilar distribution May be elevated >18 mmHg Small elevated <.5
Noncardiogenic pulmonary edema Usually normal Peripheral distributions Usually normal <18 mmHg Large elevated <.7

References

  1. Ware LB, Matthay MA (December 2005). "Clinical practice. Acute pulmonary edema". N. Engl. J. Med. 353 (26): 2788–96. doi:10.1056/NEJMcp052699. PMID 16382065.
  2. Sibbald WJ, Cunningham DR, Chin DN (October 1983). "Non-cardiac or cardiac pulmonary edema? A practical approach to clinical differentiation in critically ill patients". Chest. 84 (4): 452–61. PMID 6617283.


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