IM Shelf Review PPT Flashcards
(251 cards)
Which EKG leads affected in an anterior infarct?
V1-V4
Which EKG leads affected in an inferior infarct?
II, III, aVF
Which artery affected in an inferior infarct?
RCA
Which artery affected in an anterior infarct?
LAD
R ventricular infarct s/s
hypoTN, tachycardia, + JVD, CLEAR lungs, NO pulsus paradoxus (looks like they are in shock w JVD)
R ventricular infarct Tx?
fluids; NO nitro bc lack of preload is problem, and that would make it worse
When does myoglobin peak after an MI?
2h
When does CKMB peak after an MI?
24h
When does troponin peak after an MI?
24-48h
What is the best test to check for a recurrent MI?
myoglobin
Name 2 medications that must be d/c’d prior to a stress test.
beta-blockers and Ca-channel blockers
Name 2 medications used for a chemical stress test.
dobutamine, adenosine
How does dobutamine work?
beta1-adrenergic receptor –> increased contractility and HR
What indicates a positive stress test?
+ CP, ST depression, or hypoTN
How do adenosine work?
causes coronary vasodilation and increases blood flow in normal coronary arteries; Slows conduction time through the AV node, interrupting the re-entry pathways through the AV node, restoring normal sinus rhythm
What meds do you d/c an MI pt home on?
aspirin/clopidogrel, beta-blocker, ace-I, statin, nitrates
What is the most common cause of death post-MI?
arrhythmia
S/p MI, new systolic murmur 5-7 days later?
papillary muscle rupture
S/p MI, acute hypoTN, new murmur?
ventricular free wall rupture
S/p MI, persistent ST elevation about 1 month later, with systolic MR murmur?
ventricular wall aneurysm
“Cannon A-waves”
JVP is bounding - tricuspid valve not opening in synchrony with cardiac cycle- atria and ventricles (AV) dissociation
S/p MI, pleuritic CP and low grade temp, 5-10 weeks later?
Dressler’s syndrome
Another name for autoimmune pericarditis?
Dressler’s syndrome
Dressler’s syndrome tx?
NSAIDs, aspirin