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Septal myocardial infarctions primarily involve the:
left coronary artery
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The diagonal arteries of the left coronary arteries supply blood to the:
anterilateral wall of the left ventricle
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Reciprocal changes that are seen in an inferior MI are most often:
I, aVL & or v5 & v6
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Which two drugs can affect preload in patients with right ventricular infarctions?
morphine & nitroglycerin only
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Anterior MIs most often involve which artery?
left coronary artery
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ST segment elevation in the face of an anteroseptal MI would involve elevation if 1mm or more in these leads:
v1, v2, v3, v4
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The condition caused by inadequate cardiac output (pump failure) is called:
cardiogenic shock
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ST elevation of 1mm or more in these leads is indicative of a posterior MI:
There are no leads facing leads for posterior MI.
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The leads that are reciprocal leads for a posterior MI are:
v1, v2, v3, v4
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All of the following are types of EKG leads except:
A) multipolar
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Metabolism that occurs in the absence of O2 is termed:
anaerobic
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A drug that is a naturally occurring catecholamine & stimulates both alpha & beta receptor site is:
epinehprine
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Drugs that can be given down the endotracheal tube include all of the following except:
C) valium
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The half-life of epinephrine is 3 to 4 minutes; the half life of vasopressin is:
10 to 20 minutes
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The generic name for intropin is:
dopamaine
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Mr. Johnson came to the hospital within the hour after his heart attack started. You would expect to see what indication of acute MI on his EKG?
ST segment elevation in the leads over the damaged area
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In a lateral wall MI, which coronary artery is occluded?
Circumflex
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The MI in Figure 20 is
extensive anterior (anterior-lateral)
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In Figure 21 there is evidence of
inferior MI
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Mrs. Campho had a previous inferior MI about 20 years ago. What would you expect to see on her EKG that would be consistent with her hold inferior MI?
significant Q wave in II, III & AVF
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The order in shich an MI progresses through "the tree I's" is:
ischemia, injury, infarction
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AV dissociation is a hallmark of:
third-degree AV block
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The rhythm in Figure 18 is
third-degree AV block
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Wenchebach is characterized by
gradually prolonging PR intervals
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The rhythm in Figure 10 is
sinus rhythm w/ a sinus arrest & a ventricular escape beat
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Following PVCs is usually a(n)
complete compensatory pause
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For which of the following rhythms is electrical shock to be the heart NOT appropriate?
D) aystole
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The rhythm in Figure 15 is
torsades de poines
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Idioventricular rhythm has a heart rate of:
20-40
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Multifocal PVCs are those that:
have different shaped QRS complexes
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