NCAL KAISER EKG ACTUAL EXAM TEST
BANK 2026 COMPLETE QUESTIONS AND
VERIFIED ANSWERS
● 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
BANK 2026 COMPLETE QUESTIONS AND
VERIFIED ANSWERS
● 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
