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MI Diagnosis in LBBB or paced rhythm: Difference between revisions
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MI Diagnosis in LBBB or paced rhythm (view source)
Revision as of 08:47, 8 October 2009
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*ST elevation > 1mm in leads with a positive QRS complex (concordance in ST deviation) (score 5) | *ST elevation > 1mm in leads with a positive QRS complex (concordance in ST deviation) (score 5) | ||
*ST depression > 1 mm in V1-V3 (concordance in ST deviation) (score 3) | *ST depression > 1 mm in V1-V3 (concordance in ST deviation) (score 3) | ||
*ST elevation > 5 mm in leads with a negative QRS complex (inappropriate discordance in ST deviation) (score 2) | *ST elevation > 5 mm in leads with a negative QRS complex (inappropriate discordance in ST deviation) (score 2). This criterium is sensitive, but not specific for ischemia in LBBB. It is however associated with a worse prognosis, when present in LBBB during ischemia.<cite>Wong</cite> | ||
At a score-sum of 3, these criteria have a specificity of 90% for detecting a myocardial infarction. | At a score-sum of 3, these criteria have a specificity of 90% for detecting a myocardial infarction. | ||
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<biblio> | <biblio> | ||
#LBTB pmid=11265742 | #LBTB pmid=11265742 | ||
#Wong pmid=15992631 | |||
</biblio> | </biblio> | ||