CARDIO (MYOCARDIAL INFARCTION) Flashcards
is used synonymously with coronary occusion and heart attack
MYOCARDIAL INFARCTION (MI)
MI is synonymously with
coronary occlusion
heart attack
This is the sudden constriction or narrowing of the coronary artery
Vasospasm
The causes of MI primarily stem from the vascular system
Vasospasm
Depressed oxygen supply
Increased demand for oxygen
this is the cardinal symptoms of MI
chest pain
(persistent and crushing substernal pain)
unusually occcurs at the onset of MI
fever
There is reduce blood flow in a coronary artery, often due to rupture of an artherosclerotic plaque, but the artery is not completely occluded.
Unstable angina
signifying ischemia
ST elevation
indicating injury
inverted T wave
prolonged ischemia or necrosis
Q waves
Useful in diagnosing postoperative MI when MB-CPK may be elevated related to skeletal trauma
Troponin I and Troponin T
a heme protein of small molecular weight that is more rapidly released from damaged muscle tissue with elevation within 2 hr after an acute MI and peak levels occurring in 3-15 hr
Myoglobin
rises on second or third day after MI, indicating inflammatory response
ESR (erythrocycte sedimentation rate)
as a cause for coronary narrowing or spasm
arteriosclerosis
Administered in IV boluses is used for MI to reduce pain and anxiety
Morphine