Dysrhythmias 2025/2026 Exam
Questions and Answers | A+ Score
Assured
dysrhythmia - 🧠 ANSWER ✔✔disorder of impulse formation, conduction of
impulses, or both (electrical problem)
sinoatrial (SA) node - 🧠 ANSWER ✔✔normal pacemaker of the heart; 60-
100 BPM
secondary pacemakers - 🧠 ANSWER ✔✔the AV node and purkinje fibers
are...
P wave - 🧠 ANSWER ✔✔represents atrial depolarization; means SA node
is working and are in some type of sinus rhythm
, QRS complex - 🧠 ANSWER ✔✔represents ventricular depolarization;
ventricles contracting
ST segment - 🧠 ANSWER ✔✔represents ventricular repolarization;
ventricles relaxing
T wave - 🧠 ANSWER ✔✔ventricle repolarization
paroxysmal - 🧠 ANSWER ✔✔a dysrhythmia that has a sudden onset and
terminates spontaneously; usually of short duration but may recur
QT interval - 🧠 ANSWER ✔✔reflects the time from ventricular
depolarization through repolarization
PR interval - 🧠 ANSWER ✔✔reflects the conduction of an electrical impulse
from the from the SA node through the AV node
cardioversion - 🧠 ANSWER ✔✔electrical current given in synchrony with
the patients own QRS complex to stop a dysrhythmia
artifact - 🧠 ANSWER ✔✔distorted, irrelevant, and extraneous ECG
waveforms
ablation - 🧠 ANSWER ✔✔purposeful destruction of heart muscle cells in
attempt to correct/eliminate a dysrhythmia