4,199
edits
MI Diagnosis in LBBB or paced rhythm: Difference between revisions
Jump to navigation
Jump to search
m
MI Diagnosis in LBBB or paced rhythm (view source)
Revision as of 09:59, 8 October 2014
, 8 October 2014no edit summary
mNo edit summary |
mNo edit summary |
||
| (One intermediate revision by one other user not shown) | |||
| Line 3: | Line 3: | ||
*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). This | *ST elevation > 5 mm in leads with a negative QRS complex (inappropriate discordance in ST deviation) (score 2). This criterion 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. | ||
| Line 22: | Line 22: | ||
Image:E000406.jpg|Myocardial infarction in a pacemaker patient. The ECG shows LBBB as expected during pacing, however overt repolarization abnormalities are present. | Image:E000406.jpg|Myocardial infarction in a pacemaker patient. The ECG shows LBBB as expected during pacing, however overt repolarization abnormalities are present. | ||
Image:E000405.jpg|Myocardial infarction post primary PCI in a pacemaker patient | Image:E000405.jpg|Myocardial infarction post primary PCI in a pacemaker patient | ||
Image:V-paced_with_acute_IWMI.png|Ventricular pacemaker with acute inferior infarction | |||
</gallery> | </gallery> | ||