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AACN PCCN Review – Dysrhythmias – Questions and Answers Study Guide

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This document contains a focused review of dysrhythmias for the AACN PCCN (Progressive Care Certified Nurse) exam, including practice questions and detailed answers. It covers essential cardiac rhythm interpretations, ECG analysis, treatment interventions, and clinical decision-making related to arrhythmias. The material is designed to reinforce understanding and support effective exam preparation.

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AACN PCCN REVIEW;
DYSRHYTHMIAS QUESTIONS AND
CORRECT ANSWERS GRADED A+
YEAR 2026
Impulse Conduction Pathway - answer-SA Node --> Internodal pathways (Atrial
Contraction) --> AV Node (Delay) --> His-Purkinje System (Ventricular Contraction)



Dysrhythmias Common Causes - answer-Decreased Coronary Perfusion

Myocardial hypoxia

Electrolyte disturbances

Cardiac Muscle Injury

Ischemia or infarction

Defects in heart muscle or electrical system

Cardiac Surgery

Electrical Stimulation to the heart muscle

Medication



Best leads to look at for Afib/Aflutter - answer-II, III, AVF



Best Leads to Assess Junctional Rhythms - answer-Lead II



Best Lead to determine Bundle Cranch Blocks - answer-V1 and or V6



ST Segment Monitoring for RCA - answer-III or aVF



ST Segment Monitoring for LAD/Circumflex - answer-V3

, ST Segment Monitoring for Activity Induced Ischemia - answer-V5



ST Segment Monitoring for unknown problem - answer-III or V3



ECG Zones of MI - answer-



Inferior Wall Leads - answer-II, III, AVF



"INF"



Anterior Wall - answer-V1-V4



Lateral Wall - answer-V5, V6, I, aVL



Best T wave - answer-V3, V4, II



Reciprocal Lead Changes - answer-



Reciprocal Leads for Inferior: II, III, AVF - answer-I, aVL



Reciprocal leads for High Lateral: I aVL - answer-II, III, aVF



Reciprocal leads for Anterior: V1, V2, V3, V4 - answer-NONE



Posterior leads - answer-NONE - you may see reciprocal changes in leads V1-V4



Defibrillation or Cardioversion Definition - answer-Passing of electrical current through
cardiac muscle cells causing massive depolarization allowing cells to reset themselves
and create an environment where SA node can take back the pacemaker function

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