Myocardial Ischemia Flashcards
(51 cards)
1st sign of CAD
Stable Angina
What is CAD
Any disease that narrows or occludes one or more cornary artery
When does stable Angina present
50% or more occlusion
What happens to angina pain?
Goes away quickly with rest or nitro
ST depression can be when pain is present
Cardiac Enzymes in Stable angina
Normal
Released from dead cardiac cells - no cardiac ischemia here
Unstable Angina occurs at
80% or greater occlusion
Unstable Angina can happen
at rest or minimal activity
Unstable Angina can have what on EKG
T wave inverisons- indicate a prolonged ischemia >20 mins
What cardiac enzymes are w/ unstable angina
None - again no cellular death
What begins to happen to cells at NSTEMI
Cell death
NSTEMI occurs at
95% or greater occlusion
NSTEMI EKG changes
ST depression or T wave abnormalities - but not classi
NSTEMI SA
Pain
STEMI EKG
ST segment elevation
what happens when you have a blockage of your LAD
Blockage of the front of your left ventricle
STEMI leads
v3 and v4
Frequent presentation of an LAD Anterior MI
Left ventricular failure - can’t pump, front wall not compressing against the back
Where does Circumflex artery go?
Under your arm - lateral/side part of your heart
What leads go on circumflex artery
V5 & V6
What does the circumflex artery do during a lateral MI
Buldges - can’t compress
Presentation of circumflex lateral MI
Cardiogenic shock
R ventricle sits beside
the mediumstinum
Where does the right marginal artery sit?
Bottom of your heart
What is another name for right marginal artery MI
Inferior MI
