BSMH ADVANCED ARRHYTHMIA EXAM
SCRIPT COMPREHENSIVE STUDY GUIDE
●● What is the normal time of a QRS interval?
Answer: 0.04-0.12 seconds
●● How do you tell if a QT interval is prolonged?
Answer: Draw a line between the R-R interval. If the T wave ends
AFTER this line, it is prolonged.
●● Definition of depolarization
Answer: contraction, reaching electrical threshold to initiate a response
●● Definition of repolarization
Answer: relaxation, storing energy
●● Does an EKG show you the electrical, mechanical, or
electrical/mechanical activity of the heart?
Answer: Electrical
●● How to count bpm on EKG?
Answer: 1500/ # mini blocks between R-R = bpm
, ●● SA node inherent rate?
Answer: 60-100 bpm
●● AV node inherent rate?
Answer: 40-60 bpm
●● Ventricular inherent rate?
Answer: 20-40 bpm; QRS will be wide
●● Causes of sinus bradycardia?
Answer: Vagal stimulation
MI
hypoxia
Digitalis Tox
Athlete
●● Sinus bradycardia tx?
Answer: IF SYMPTOMATIC...
atropine
pacemaker
SCRIPT COMPREHENSIVE STUDY GUIDE
●● What is the normal time of a QRS interval?
Answer: 0.04-0.12 seconds
●● How do you tell if a QT interval is prolonged?
Answer: Draw a line between the R-R interval. If the T wave ends
AFTER this line, it is prolonged.
●● Definition of depolarization
Answer: contraction, reaching electrical threshold to initiate a response
●● Definition of repolarization
Answer: relaxation, storing energy
●● Does an EKG show you the electrical, mechanical, or
electrical/mechanical activity of the heart?
Answer: Electrical
●● How to count bpm on EKG?
Answer: 1500/ # mini blocks between R-R = bpm
, ●● SA node inherent rate?
Answer: 60-100 bpm
●● AV node inherent rate?
Answer: 40-60 bpm
●● Ventricular inherent rate?
Answer: 20-40 bpm; QRS will be wide
●● Causes of sinus bradycardia?
Answer: Vagal stimulation
MI
hypoxia
Digitalis Tox
Athlete
●● Sinus bradycardia tx?
Answer: IF SYMPTOMATIC...
atropine
pacemaker
