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Anterior MI: Difference between revisions
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*ST-segment depression (>1 mm) in II, III and aVF (sens 34%, spec 98%) | *ST-segment depression (>1 mm) in II, III and aVF (sens 34%, spec 98%) | ||
;Characteristics of distal LAD occlusion | ;Characteristics of distal LAD occlusion | ||
*Little ST-segment depression (<= 1 mm) or | *Little ST-segment depression (<= 1 mm) or elevation in II, III, and aVF (sens 66%, spec 73%) | ||
Another way to look at this is by assessing the axix of the ST vector. If it points upwards (with ST depression in II, III, and AVF) the proximal LAD is occluded. If it points downwards (with little ST depression or even elevation in II, III, and AVF) the distal LAD is occluded. An ECG that does not show any ST depression sugggests an occlusion after the origin of the first diagonal branch. | Another way to look at this is by assessing the axix of the ST vector. If it points upwards (with ST depression in II, III, and AVF) the proximal LAD is occluded. If it points downwards (with little ST depression or even elevation in II, III, and AVF) the distal LAD is occluded. An ECG that does not show any ST depression sugggests an occlusion after the origin of the first diagonal branch. | ||