Pericarditis laboratory studies: Difference between revisions

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==Inflammatory markers==
==Inflammatory markers==
*The [[Complete Blood Count|CBC]] may show an elevated white count and a serum [[C-reactive protein]] may be elevated.
The following inflammatory markers are often elevated:


'''''Molecular markers'''''. Acute pericarditis is associated with a modest increase in serum [[creatine kinase]] MB (CK-MB)<!--
*[[Complete Blood Count|CBC]]
*[[C-reactive protein]]
*Erythrocyte sedimentation rate [[ESR]]
 
==Markers of Myonecrosis==
The following markers of myonecrosis are elevated:
*[[Creatine Kinase]]: Acute pericarditis is associated with a modest increase in serum [[creatine kinase]] MB (CK-MB)<!--
   --><ref name="spodick">{{cite journal | author=  Spodick DH | title= Acute pericarditis: current concepts and practice | journal= JAMA | year=2003 | pages=1150–3 | volume=289 | issue=9 | pmid=12622586 | doi= 10.1001/jama.289.9.1150}}</ref><!--
   --><ref name="spodick">{{cite journal | author=  Spodick DH | title= Acute pericarditis: current concepts and practice | journal= JAMA | year=2003 | pages=1150–3 | volume=289 | issue=9 | pmid=12622586 | doi= 10.1001/jama.289.9.1150}}</ref><!--
   --><ref name="karja">{{cite journal | author=  Karjalainen J, Heikkila J | title=  "Acute pericarditis": myocardial enzyme release as evidence for myocarditis | journal= Am Heart J| year=1986| pages=546–52 | volume=111 | issue=3 | pmid=3953365 | doi=  10.1016/0002-8703(86)90062-1}}</ref> and cardiac [[troponin]] I (cTnI)<!--
   --><ref name="karja">{{cite journal | author=  Karjalainen J, Heikkila J | title=  "Acute pericarditis": myocardial enzyme release as evidence for myocarditis | journal= Am Heart J| year=1986| pages=546–52 | volume=111 | issue=3 | pmid=3953365 | doi=  10.1016/0002-8703(86)90062-1}}</ref>
*Cardiac [[troponin]] I (cTnI)<!--
   --><ref name="bonnefoy">{{cite journal | author=    Bonnefoy E, Godon P, Kirkorian G, Fatemi M, Chevalier P, Touboul P | title=  Serum cardiac troponin I and ST-segment elevation in patients with acute pericarditis | journal= Eur Heart J| year=2000| pages=832–6 | volume=21 | issue=10 | pmid=10781355 | doi=  10.1053/euhj.1999.1907}}</ref><!--
   --><ref name="bonnefoy">{{cite journal | author=    Bonnefoy E, Godon P, Kirkorian G, Fatemi M, Chevalier P, Touboul P | title=  Serum cardiac troponin I and ST-segment elevation in patients with acute pericarditis | journal= Eur Heart J| year=2000| pages=832–6 | volume=21 | issue=10 | pmid=10781355 | doi=  10.1053/euhj.1999.1907}}</ref><!--
   --><ref name="imazio">{{cite journal | author=    Imazio M, Demichelis B, Cecchi E, Belli R, Ghisio A, Bobbio M, Trinchero R | title=    Cardiac troponin I in acute pericarditis | journal=  J Am Coll Cardiol| year=2003| pages=2144–8 | volume=42 | issue=12 | pmid=14680742 | doi=    10.1016/j.jacc.2003.02.001}}</ref>, both of which are also markers for myocardial injury. Therefore, it is imperative to also rule out [[acute myocardial infarction]] in the face of these biomarkers. The elevation of these substances is related to inflammation of the myocardium. Also, ST elevation on [[EKG]] (see below) is more common in those patients with a cTnI > 1.5 µg/L<!--
   --><ref name="imazio">{{cite journal | author=    Imazio M, Demichelis B, Cecchi E, Belli R, Ghisio A, Bobbio M, Trinchero R | title=    Cardiac troponin I in acute pericarditis | journal=  J Am Coll Cardiol| year=2003| pages=2144–8 | volume=42 | issue=12 | pmid=14680742 | doi=    10.1016/j.jacc.2003.02.001}}</ref>.
  --><ref name="imazio">{{cite journal | author=    Imazio M, Demichelis B, Cecchi E, Belli R, Ghisio A, Bobbio M, Trinchero R | title=    Cardiac troponin I in acute pericarditis | journal=  J Am Coll Cardiol| year=2003| pages=2144–8 | volume=42 | issue=12 | pmid=14680742 | doi=    10.1016/j.jacc.2003.02.001}}</ref>. [[Coronary angiography]] in those patients should indicated normal vascular perfusion. The elevation of these biomarkers are typically transient and should return to normal within a week. Persistence may indicated myopericarditis. As a summary:
 
* [[ESR]]: mild to marked elevation
* [[CRP]]: mild to marked elevation
* [[CK-MB]]: depends on the extent of myocardial involvement
* [[LDH]]: depends on the extent of myocardial involvement
* [[LDH]]: depends on the extent of myocardial involvement
* [[troponin I]]: depends on the extent of myocardial involvement
* Serum [[myoglobin]]: normal (but not always, usually rises with increased ST segment deviation
* serum myoglobin: normal (but not always, usually rises with increased ST segment deviation
* Gallium-67 scanning may help identify inflammatory and leukemic infiltrations
* gallium-67 scanning: helps ID "inflammatory and leukemic infiltrations"


==References==
==References==

Revision as of 00:58, 25 June 2011

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Inflammatory markers

The following inflammatory markers are often elevated:

Markers of Myonecrosis

The following markers of myonecrosis are elevated:

  • Creatine Kinase: Acute pericarditis is associated with a modest increase in serum creatine kinase MB (CK-MB)[1][2]
  • Cardiac troponin I (cTnI)[3][4].
  • LDH: depends on the extent of myocardial involvement
  • Serum myoglobin: normal (but not always, usually rises with increased ST segment deviation
  • Gallium-67 scanning may help identify inflammatory and leukemic infiltrations

References

  1. Spodick DH (2003). "Acute pericarditis: current concepts and practice". JAMA. 289 (9): 1150–3. doi:10.1001/jama.289.9.1150. PMID 12622586.
  2. Karjalainen J, Heikkila J (1986). ""Acute pericarditis": myocardial enzyme release as evidence for myocarditis". Am Heart J. 111 (3): 546–52. doi:10.1016/0002-8703(86)90062-1. PMID 3953365.
  3. Bonnefoy E, Godon P, Kirkorian G, Fatemi M, Chevalier P, Touboul P (2000). "Serum cardiac troponin I and ST-segment elevation in patients with acute pericarditis". Eur Heart J. 21 (10): 832–6. doi:10.1053/euhj.1999.1907. PMID 10781355.
  4. Imazio M, Demichelis B, Cecchi E, Belli R, Ghisio A, Bobbio M, Trinchero R (2003). "Cardiac troponin I in acute pericarditis". J Am Coll Cardiol. 42 (12): 2144–8. doi:10.1016/j.jacc.2003.02.001. PMID 14680742.

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