PCC 4 Exam 1 Questions and Answers Solved Correctly Rated A+
contractile cells - Answers working cells responsible for mechanical muscle action of heart
pacemaker cells - Answers cells in electrical conduction system responsible for generating electrical
impulses
excitability - Answers ability to respond to an electrical impulse
conductivity - Answers ability to conduct an electrical impulse
SA node - Answers what is the primary pacemaker of the heart?
resting state - Answers outside of cell positive compared to inside
depolarization - Answers inside of cell positive compared to outside
dysrhythmia - Answers disturbance of heart rhythm
ectopic pacemaker - Answers pacemaker that bypasses the normal conduction pathway such as non
pacemaker cardiac cells in the atria, AV junction, or ventricles
cardiac output - Answers a dysrhythmia is a problem when it impacts _________.
48 hours - Answers how long does someone need to have afib before needing an anticoagulant?
vagal maneuver, medication, shock - Answers what are the methods used when HR is too fast?
vagal maneuver - Answers method for slowing heart
-patient stable
-hold breath and try to blow it out with mouth and nose closed
-bear down
atropine, escalate meds (epinephrine/dopamine), pacemaker - Answers what are the methods used for
speeding up the heart?
prodysrhythmic action - Answers all drugs that treat dysrhythmias can cause dysrhythmias
sodium channel blocker - Answers what is the first class med for tachydysrhythmias?
beta blockers - Answers what is the second class med for tachydysrhythmias?
potassium channel blockers - Answers what is the third class med for tachydysrhythmias?
calcium channel blockers - Answers what is the 4th class med for tachydysrhythmias?
sodium channel blockers - Answers -class used for tachydysrhythmias
, -prolong depolarization time
-slow conduction in atria, ventricles, purkinje fibers
-used for supra ventricular and ventricular tachycardias
beta blockers - Answers -class used for tachydysrhythmias
-decrease SA node firing
-slow conduction through AV node
-decrease myocardial contractility
-used for supraventricular and ventricular tachycardias
-decreases sympathetic stimulation
potassium channel blockers - Answers -class used for tachydysrhythmias
-prolong repolarization
-used for supra ventricular and ventricular tachycardias
-possible prolonged QT
-can turn into Torsades de pointes and progress to V fib
calcium channel blocker - Answers -class used for tachydysrhythmias
-decrease SA node firing
-slow conduction through AV node
-decrease myocardial contractility
-used for supraventricular tachycardias
-only 2
adenosine - Answers -used for tachydysrhythmias
-decreases automaticity of SA node and slows conduction through AV node
-6mg over 1-3 sec followed by rapid, forceful 20 cc bolus NS
-may repeat with 12mg (repeat to total dose of 30 if no effect)
-supraventricular tachycardia ONLY
contractile cells - Answers working cells responsible for mechanical muscle action of heart
pacemaker cells - Answers cells in electrical conduction system responsible for generating electrical
impulses
excitability - Answers ability to respond to an electrical impulse
conductivity - Answers ability to conduct an electrical impulse
SA node - Answers what is the primary pacemaker of the heart?
resting state - Answers outside of cell positive compared to inside
depolarization - Answers inside of cell positive compared to outside
dysrhythmia - Answers disturbance of heart rhythm
ectopic pacemaker - Answers pacemaker that bypasses the normal conduction pathway such as non
pacemaker cardiac cells in the atria, AV junction, or ventricles
cardiac output - Answers a dysrhythmia is a problem when it impacts _________.
48 hours - Answers how long does someone need to have afib before needing an anticoagulant?
vagal maneuver, medication, shock - Answers what are the methods used when HR is too fast?
vagal maneuver - Answers method for slowing heart
-patient stable
-hold breath and try to blow it out with mouth and nose closed
-bear down
atropine, escalate meds (epinephrine/dopamine), pacemaker - Answers what are the methods used for
speeding up the heart?
prodysrhythmic action - Answers all drugs that treat dysrhythmias can cause dysrhythmias
sodium channel blocker - Answers what is the first class med for tachydysrhythmias?
beta blockers - Answers what is the second class med for tachydysrhythmias?
potassium channel blockers - Answers what is the third class med for tachydysrhythmias?
calcium channel blockers - Answers what is the 4th class med for tachydysrhythmias?
sodium channel blockers - Answers -class used for tachydysrhythmias
, -prolong depolarization time
-slow conduction in atria, ventricles, purkinje fibers
-used for supra ventricular and ventricular tachycardias
beta blockers - Answers -class used for tachydysrhythmias
-decrease SA node firing
-slow conduction through AV node
-decrease myocardial contractility
-used for supraventricular and ventricular tachycardias
-decreases sympathetic stimulation
potassium channel blockers - Answers -class used for tachydysrhythmias
-prolong repolarization
-used for supra ventricular and ventricular tachycardias
-possible prolonged QT
-can turn into Torsades de pointes and progress to V fib
calcium channel blocker - Answers -class used for tachydysrhythmias
-decrease SA node firing
-slow conduction through AV node
-decrease myocardial contractility
-used for supraventricular tachycardias
-only 2
adenosine - Answers -used for tachydysrhythmias
-decreases automaticity of SA node and slows conduction through AV node
-6mg over 1-3 sec followed by rapid, forceful 20 cc bolus NS
-may repeat with 12mg (repeat to total dose of 30 if no effect)
-supraventricular tachycardia ONLY
