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Exam (elaborations)

Kaiser EKG Test Questions With Correct Answers

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Kaiser EKG Test Questions With Correct Answers Depolarization - answer- inside of cell becomes positive, outside negative - contraction - na+ channel opens - ELECTRICAL repolarization - answermovement of cells = inside is negative again - na+ channels close, k+ channels open - MECHANICAL p...

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  • October 18, 2024
  • 32
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Kaiser EKG
  • Kaiser EKG
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sirjoel
©SIRJOEL EXAM SOLUTIONS
10/7/2024 11:03AM



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

, ©SIRJOEL EXAM SOLUTIONS
10/7/2024 11:03AM


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

, ©SIRJOEL EXAM SOLUTIONS
10/7/2024 11:03AM


- 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

, ©SIRJOEL EXAM SOLUTIONS
10/7/2024 11:03AM


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

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