Third degree AV block laboratory findings: Difference between revisions
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==Laboratory Findings== | ==Laboratory Findings== | ||
The following laboratory studies should be done, depending upon the cause, while investigating a case of complete heart block. | The following laboratory studies should be done, depending upon the cause, while investigating a case of complete heart block. | ||
* Complete blood count - may reveal anemia (low RBC count), infection (leukocytosis is seen in myocarditis, acute rheumatic fever and viral infections) | * [[Complete blood count]] - may reveal [[anemia]] (low RBC count), [[infection]] ([[leukocytosis]] is seen in [[myocarditis]], [[acute rheumatic fever]] and viral infections) | ||
* Differential count | * Differential count | ||
* Serum electrolytes - hyperkalemia (renal insufficiency) | * Serum electrolytes - [[hyperkalemia]] ([[renal insufficiency]]) | ||
* PT and aPTT | * [[PT]] and [[aPTT]] may be ordered routinely | ||
* Blood digoxin levels should be measured in case of | * Blood [[digoxin]] levels should be measured in case of [[digoxin overdose]] | ||
* Myocarditis related studies - HIV serologies, Lyme titers, Chagas titers, enterovirus PCR, adenovirus PCR | * Myocarditis related studies - HIV serologies, Lyme titers, Chagas titers, enterovirus PCR, adenovirus [[PCR]] | ||
* Peripheral blood smears can aid in the diagnosis of hematological disorders like thalassemia major, Hodgkins lymphoma etc., | * Peripheral blood smears can aid in the diagnosis of hematological disorders like [[thalassemia major]], [[Hodgkins lymphoma]] etc., | ||
==References== | ==References== | ||
Revision as of 17:04, 18 February 2013
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Third degree AV block Microchapters | |
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American Roentgen Ray Society Images of Third degree AV block laboratory findings | |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Raviteja Guddeti, M.B.B.S. [2]
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Laboratory Findings
The following laboratory studies should be done, depending upon the cause, while investigating a case of complete heart block.
- Complete blood count - may reveal anemia (low RBC count), infection (leukocytosis is seen in myocarditis, acute rheumatic fever and viral infections)
- Differential count
- Serum electrolytes - hyperkalemia (renal insufficiency)
- PT and aPTT may be ordered routinely
- Blood digoxin levels should be measured in case of digoxin overdose
- Myocarditis related studies - HIV serologies, Lyme titers, Chagas titers, enterovirus PCR, adenovirus PCR
- Peripheral blood smears can aid in the diagnosis of hematological disorders like thalassemia major, Hodgkins lymphoma etc.,