ischemic heart dz Flashcards
2 general causes of angina
- demand is increased but theres inadequate flow d/t fixed obstruction (exertional angina, emotional upset angina)
- demand is normal but supply decreased bc of a primary event
insufficient oxygen to supply the cardiac muscle
ischemia
pain/pressure caused by ischemia
angina
squeezing, grip like, suffocating heavy chest pain but NOT sharp or related to breathing; levine sign
typican angina
fist to chest d/t pain is what
levine sign
fist to chest d/t pain is what
levine sign
which group is more likely to feel atypical angina and what is that?
- women more likely
- no pain but nausea, burning, atypical location
things that may intensify ischemia
- anemia
- fever & infection
- tachyarrhythmiaas
- emotional stress
- hypoxemia
sx of acute myocardial ischemia secondary to acute plaque rupture & carrying degrees of coronary artery thrombosis (occlusion)
ACS
two ACS conditions of subtotal occlusion with ST depression &/or T wave inversions
UA, NSTEMI
positive cardiac enzymes is seen in which ACS conditions?
NSTEMI and STEMI
condition of total occlusion with ST elevation
STEMI
most common cause of MI
atherosclerosis
chest pain at rest with ACS indicates what level of occlusion
> 90%
how does ECG progress with STEMI
- hyperacute T waves
- ST elevations
- pathologic Q wave
4 populations that troponin may be FALSELY elevated in
- renal failure
- advanced heart failure
- acute PE
- CVA
what is OANM
- oxygen
- aspirin 325mg chewed
- Nitroglycerin sublinual
- Morphine IV NTG
what test can be done to differntiate btwn UA and NSTEMI if you see ST depression &/or T wave inversion on ECG
cardiac enzymes
* will be + in NSTEMI and - in UA
medication for cocaine related ACS
BZD for sx
standard therapies (aspirin, nitro)
which class of med should be avoided in cocaine related ACS
beta blocker
new onset severe chest pain < 2 month that is frequent (> 3x/day) should make you think of
unstable angina
ischemic sx of ACS, negative cardiac markers +/- ECG ischemic changes
unstable angina