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Exam (elaborations)

Kaiser EKG Test Exam Questions and Answers 100% Pass

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Kaiser EKG Test Exam Questions and Answers 100% Pass depolarization - - inside of cell becomes positive, outside negative - contraction - na+ channel opens - ELECTRICAL repolarization - movement of cells = inside is negative again - na+ channels close, k+ channels open - MECHANICAL p wave ...

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  • October 22, 2024
  • 29
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Kaiser EKG
  • Kaiser EKG
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JOSHCLAY
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

Kaiser EKG Test Exam Questions and

Answers 100% Pass


depolarization - ✔✔- inside of cell becomes positive, outside negative

- contraction

- na+ channel opens

- ELECTRICAL

repolarization - ✔✔movement of cells = inside is negative again

- na+ channels close, k+ channels open

- MECHANICAL

p wave

qrs wave

t wave - ✔✔- (p) atrial depolarization

- (qrs) ventricular depolarization

- (t) ventricular repolarization

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

stimulus

,©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

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

relative refractory (vulnerable per of repolarization) - ✔✔- 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 - ✔✔haldol, bradycardia, hypokalemia

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

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

conductivity - ✔✔ability to recieve electrical stimulus and conduct impulse

to adjacent cells

contraction - ✔✔cardiac cells shorten = muscular contraction in response to

electrical stimulus

sa node - ✔✔- primary pacemaker of heart

- 60-90 bpm

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

- 40-60 bpm

bundle of his - ✔✔ability to self initiate electrical activity

, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

- 40-60 bpm

purkinje fibers - ✔✔network of fibers that carry electrical impulse to

ventricular muscle cells

- 20-40 bpm

NSR

Brady

Tachy

SVT

Junctional

Ventricular rhythm - ✔✔NSR 60-100

Brady 40-60

Tachy >100

SVT >150

Junctional 40-60

Ventricular rhythm 20 - 40

PR interval - ✔✔0.12-0.20

beginning of p to beginning of qrs

qrs interval - ✔✔< 0.12

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