Conduction System
SA Node
AV Node
Bundle of His
Right and Left bundle branches
Purkinje Fibers
SA Node
primary pacemaker
rate 60-100
Brainpower
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AV Node
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ADVANCED ARRHYTHMIA EXAM PREP WITH 100% CORRECT ANSWERS ALREADY GRADED A+
what does each small box represent - answer .04 seconds
what does 1 large box (5 small boxes) represent - answer .20 seconds
what do 5 large boxes represent - answer 1 second
primary pacemaker - answer SA node w/expected firing rat of 60-100 bpm
backup pacemaker - answer AV node w/expected firing rate of 40-60 bpm
final pacemaker - answer ventricles w/expected firing rate less than 40 bpm
a normal PR interval is - answer .12-.20 seconds
a normal QRS interval is - answer < .12 seconds (.04-.11)
a normal QT interval is - answer .36-.44 seconds
the ST segment should be ____ with the _____ - answer level w/ the baseline
ST segment elevation and depression is an indication of - answer ischemia or injury to the heart
what does P wave represent on the ECG - answer atrial depolarization what does P wave represent on the ECG - answer ventricular depolarization
what does P wave represent on the ECG - answer repolarization of ventricles
rhythms that originate above the ventricles normally have a ___ QRS complex - answer narrow QRS complex
rhythms that originate in the ventricles normally have a ___ QRS complex - answer wide QRS complex
A Flutter - answer 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
A Fib - answer rate: fast & unmeasurable
regularity: irregular
P wave: NON. wavy baseline btwn QRS instead
PR: not applicable - you don't measure it
QRS: <.12 secs
(1*AVB) - answer NO DROPPED QRS
PR interval > .20 secs
(2*AVB) - answer PR wave gets longer + longer UNTIL QRS is DROPPED
2*AVB type 2 - answer PR intervals remain constant, but some QRS is DROPPED
3*AVB - answer rate: 60 - 100 HR
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