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Exam (elaborations)

KAISER EKG TEST QUESTIONS WITH CORRECT ANSWERS

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KAISER EKG TEST QUESTIONS WITH CORRECT ANSWERS

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  • October 17, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Kaiser ekg
  • Kaiser ekg
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biggdreamer
KAISER EKG TEST QUESTIONS WITH
CORRECT ANSWERS
depolarization - Answer-- inside of cell becomes positive, outside negative
- contraction
- na+ channel opens
- ELECTRICAL

repolarization - Answer-movement of cells = inside is negative again
- na+ channels close, k+ channels open
- MECHANICAL

p wave
qrs wave
t wave - Answer-- (p) atrial depolarization
- (qrs) ventricular depolarization
- (t) ventricular repolarization

refractory period - Answer-per of time where cardiac cells cannot respond to stimulus

absolute refractory period - Answer-beginning of qrs to peak of t wave

relative refractory (vulnerable per of repolarization) - Answer-- cardiac cells have
repolarized enough to respond to strong stimulus
- during this per a strong stimulus may overtake the pacemaker of the heart
- ex. PVC during vulnerable period may turn into vtach or torsades
- prolonged QT interval inc possibility

causes of prolonged qt intervals - Answer-haldol, bradycardia, hypokalemia

automaticity - Answer-ability of pacemaker cells to initiate electrical impulse

excitability - Answer-ability of muscle cells to respond to outside stimulus

conductivity - Answer-ability to recieve electrical stimulus and conduct impulse to
adjacent cells

contraction - Answer-cardiac cells shorten = muscular contraction in response to
electrical stimulus

sa node - Answer-- primary pacemaker of heart
- 60-90 bpm

av node - Answer-delay = atrial contraction + ventricular filling

, - 40-60 bpm

bundle of his - Answer-ability to self initiate electrical activity
- 40-60 bpm

purkinje fibers - Answer-network of fibers that carry electrical impulse to ventricular
muscle cells
- 20-40 bpm

NSR
Brady
Tachy
SVT
Junctional
Ventricular rhythm - Answer-NSR 60-100
Brady 40-60
Tachy >100
SVT >150
Junctional 40-60
Ventricular rhythm 20 - 40

PR interval - Answer-0.12-0.20
beginning of p to beginning of qrs

qrs interval - Answer-< 0.12
beginning of q to end of s

qt interval - Answer-beginning of q to end of t
- heart rate dependent

is rhythm regular or irregular - Answer-measure interval between R waves

ventricular rate - Answer-- count # of qrs complexes

atrial rate - Answer-- count # of p waves

causes of bradycardia - Answer-- vagal
- dig, beta blockers
- compensatory response in acute MI
- ischemic heart disease
- sick sinus. synd
- inc intracranial pressure

bradycardia symptoms - Answer-hypotension, AMS, signs of shock, ischemic chest
discomfort, HF

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