Advanced Arrhythmia Exam With Expert Rationales

Advanced Arrhythmia Exam With Expert
Rationales

what does each small box represent
.04 seconds
what does 1 large box (5 small boxes) represent
.20 seconds
what do 5 large boxes represent
1 second
primary pacemaker
SA node w/expected firing rat of 60-100 bpm
backup pacemaker
AV node w/expected firing rate of 40-60 bpm
final pacemaker
ventricles w/expected firing rate less than 40 bpm
a normal PR interval is
.12-.20 seconds
a normal QRS interval is
< .12 seconds (.04-.11)
a normal QT interval is

, .36-.44 seconds
the ST segment should be ____ with the _____
level w/ the baseline
ST segment elevation and depression is an indication of
ischemia or injury to the heart
what does P wave represent on the ECG
atrial depolarization
what does P wave represent on the ECG
ventricular depolarization
what does P wave represent on the ECG
repolarization of ventricles
rhythms that originate above the ventricles normally have a ___
QRS complex
narrow QRS complex
rhythms that originate in the ventricles normally have a ___ QRS
complex
wide QRS complex
A Flutter
rate: 250 - 350 bpm HR varies!!
regularity: regular or irregular
P waves: "think of a shark fin or waves"
PR: not applicable - you don't measure it
QRS: < .12 secs