Samuel Merritt University Critical Care NURSG 566 -
Exam 1 Review Questions With Complete Solutions
Define afterload Correct Answer the resistance against which
the heart must pump (aka SVR)
Define preload Correct Answer volume of blood in the
ventricles at the end of diastole (aka EDV)
How are Mobitz I AVB's treated? Correct Answer
transcutaneous pacing if heart rate is slow and AVB is
symptomatic, possible atropine
How are Mobitz II AVB's treated? Correct Answer
transcutaneous pacing, oxygen, atropine (narrow QRS),
epinephrine (wide QRS), pacemaker, dopamine
How are PVCs seen on an ECG? Correct Answer no p waves,
QRS is wide and bizarre in shape; >0.12 seconds wide
How are SVTs treated? Correct Answer vagal maneuver,
adenosine, synchronized cardioversion
How is a first degree AV block identified? Correct Answer
prolonged PR interval
How is a Mobitz type I AVB identified? Correct Answer P
wave without QRS complex, PR interval gets longer and longer
and then is gone
, How is Allen's test used in arterial blood pressure monitoring?
Correct Answer prior to beginning this, Allen's test is done to
test collateral flow and ensure that if radial artery is obstructed
then ulnar artery will provide blood supply to hand
How is asystole treated? Correct Answer vasopressin,
epinephrine
How is continuous cardiac output measured? Correct Answer a
PA catheter with thermal filament is inserted into right atrium
and through changes in temperature of the blood as it passes
through the right ventricle, the average CO for the past 3-6
minutes is measured
How is Mobitz type II AVB identified? Correct Answer PR
interval stays consistent and then QRS drops
How is sinus bradycardia treated? Correct Answer -atropine
-isoproterenol
-pacemaker if they do not respond to medications
How is STEMI different from NSTEMI? Correct Answer
NSTEMI is likely a partial blockage while STEMI is a full
occlusion
How is third degree AVB identified? Correct Answer P waves
and QRS complexes are separate from each other and follow
their own pattern
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