Ischemia and Infarction Flashcards
artery that supplies 70% of the left ventricle and can lead to death if lost
left coronary artery
artery that supplies the anterior portion of the left ventricle and the septum
left anterior descending artery
artery that is referred to as the widowmaker
left anterior descending artery
artery that supplies the posterior wall, parts of the lateral wall, and inferior wall
left circumflex artery
artery that supplies the right ventricle, right atrium, and part of the septum
right coronary artery
infarcts of this artery may result in severe right ventricle dysfunction, AV nodal block, and hypotension
right coronary artery
artery that supplies the AV node, proximal bundle branches, inferior-posterior LV wall, and basal portion of the septum
right posterior descending artery
what is the ECG distribution of RCA?
I think RC is A tier, but others think it is INFERIOR or POSTERIOR.
what is the ECG distribution of LAD (left anterior descending)?
the LAD had a SEPTAL piercing on the ANTERIOR of his face
what is the ECG distribution for LCX?
She played lacrosse (LCX) on the LATERAL field
what does ischemia look like on ECG?
ST depression
what does injury look like on ECG?
ST elevation
what does infarction look like on ECG? (2)
ST elevation
Q wave
in which leads will an anterior wall MI be shown?
V3 and V4
in which leads will a lateral wall MI be shown?
V5, V6, I, and aVL
in which leads will an inferior wall MI be shown?
II, III, and aVF
in which leads would changes be shown in a right ventricular infarction?
V4R, V5R, V6R
in which leads would changes be shown in a posterior wall MI?
V7-V10
what is a good rule of thumb to determine when to obtain right-sided leads?
any time an inferior infarct is seen
what is a good rule of thumb to determine when to obtain posterior leads?
ST depression in V1-V3 not associated with RBBB
where do posterior leads come from?
move V4, V5, and V6 to spots for V7, V8, V9
what is a symptom of right ventricular MI?
no blood pressure due to no return
what is the criteria for right ventricular MI? (2)
inferior wall MI
ST elevation in V4R, V5R, V6R
what does a posterior wall MI look like on ECG?
carousel pony in V1 or V2
where would reciprocal changes be seen for a posterior MI?
V1-V3
