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BIO420 Mammalian Physiology
Warner Pacific College
Fall 2015
Chapters 11 and 13: Electrocardiogram and Cardiac Arrhythmias
I.
II.
III.
IV.
V.
VI.
VII.
VIII.
IX.
The Normal Electrocardiogram
a. P-wave
b. QRS complex
c. T-wave
Depolarization versus repolarization waves
a. Depolarization
b. Repolarization
c. Monophasic Action Potential
Voltage and Timing of Electrocardiograms
a. Voltage
b. P-Q or P-R interval
c. Q-T interval
d. Heart Rate
Flow of Electrical Current
Electrocardiographic Leads
a. Lead 1
b. Lead 2
c. Lead 3
Cardiac Arrhythmias
a. Causes
Abnormal Sinus Rhythms
a. Tachycardia
b. Bradycardia
Conduction System Blockage
a. SA Block
b. AV Block
i. First degree
ii. Second degree
iii. Third degree
Ventricular Fibrillation
a. Defibrillation
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