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Resp 16 II

electrocardiograms powerpoint notes

QuestionAnswer
EKG inexpensive, noninvasive, and easy to obtain
why do we use EKG chest pain, SOB, dyspnea, weakness, lethargy, and dizziness
What does EKG measure cardiac activity,repolarization and depolarization IT DOES NOT measure force of contraction of the heart
What is repolarization resting.... positive outside of cell
What is depolarization contracting.....negative outside of cell
What is the normal pacemaker of the heart SA node (60-100
2nd pacemaker of heart AV node (40-60)
3rd pacemaker of heart Bundle braches (30-40)
4th pacemaker of heart Purkinje (30-40)
Cardiac electrical pathway SA node, AV node, bundle of HIS, R/L bundle branch, Purkinje Fibers
Nerve fibers within the Atrium Sympathic (speeds HR) and parasympathetic (slows HR) when stimulated
Segment portion of the baseline
Interval contains at least one wave
Rate calculation count the number of large boxes between 2 R waves and then divide that number by 300 OR... memorize 300, 150, 100, 75, 60, 50
5 steps rate, rhythym, p wave, pr interval, QRS complex
To find HR count R's then x by 10
S below baseline....
Q below baseline... 1st one
R Tallest point
recording techniques for ECGS normally 12 leads, 10 leads are attached
holter monitoring Used to take home and pt tape records when their palpation occurs
Usual electrical setting for defibrillation on adult 200-360 J
Created by: TnJFarrington12