STEMI Flashcards
(15 cards)
STEMI definition
complete occlusion of a coronary artery causing transmural infarction
ST elevation - ECG definition
MI - signs and symptoms, blood tests, angiography
Pathway one (STE-ACS) conditions
ST elevation (2mm in chest leads, 1mm in limb leads) in two or more anatomically contiguous leads
ST depression V1-V3 with ST elevation in V7-V9
Left coronary main stem (depression in 6 leads and ST elevation in aVR)
anatomically contiguous meaning
looking at same part of the heart. Eg - aVF and lead III
septal leads
V1 and V2
Septal blood supply
Left anterior descending artery
Anterior leads
V3 and V4
anterior blood supply
left anterior descending artery
lateral leads
lead 1, aVL and lead V5 and V6
Lateral blood supply
left circumflex artery
Inferior leads
lead 2, 3 and aVF
inferior blood supply
right coronary artery
posterior leads
NO POSTERIOR LEADS
- look for ST depression in V1-V4
- move leads to V789 to get posterior view
Posterior blood supply
right coronary artery or left circumflex artery
right sided involvement
with inferior STEMI, consider right sided involvement especially if ST elevation is higher in lead III than aVF and lead II as this is closest to the right side of the heart.
Move V4 to right side to get rV4
be aware of effects of GTN and morphine on preload which can cause serious right ventricular dysfunction
left coronary mainstem
Partial occlusion or complete occlusion of proximal left coronary artery.
ST elevation in aVR and depression in V123
