ECG ORIENTATION KAISER 2025) comprehensive questions and verified
ECG ORIENTATION KAISER
answersStudy(Detailed & Elaborated) ACTUAL EXAM 2025 TEST 100% Solved
online at https://quizlet.com/_hdr9ve
2025!!
1. DEPOLARIZA- Movement of ions (Na+, Ca+, K+) across cell membrane causing inside of cell to
TION become more positive, electrical conduction results in contraction. Na+ channels
open. Positive inside, negative outside.
2. REPOLARIZA- movement of ions across cell membrane where inside of cell is restored to its neg-
TION ative charge. Sodium channels close. Potassium channels open. Active transport
by sodium-potassium pump
3. DEPORIZATION ELECTRICAL
4. CONTRACTION IS MECHANICAL. CONTRACTION FOLLOWS DEPOLARIZATION.
5. WHAT OCCUR ELECTRICAL CONDUCTION
FIRST? ELECTRI-
CAL CONDUC-
TION, OR ME-
CHANICAL CON-
TRACTION?
6. P WAVE ATRIAL DEPOLARIZATION
7. QRS VENTRICAL DEPOLARIZATION
8. T WAVE ventricular repolarization
9. REFRACTORY PE- the period of resistance to stimulation, cardiac cells unable to respond to stimulus
RIOD
10. relative refracto- cardiac cells have repolarized enough to respond to strong stimulus
ry period
11. automaticity Ability of pacemaker cells to spontaneously initiate an electrical impulse, SA node,
AV junction, and Purkinje fibers
1/6
, ECG ORIENTATION KAISER
Study online at https://quizlet.com/_hdr9ve
12. excitability ability to respond to stimuli
13. conductivity Ability to receive an electrical stimulus and conduct that impulse to adjacent cells -
all cardiac cells possess this.
14. contraction Cardiac cells shorten, causing muscular contraction in response to an electrical
stimulus
15. SA node Sino-atrial node; the pace-maker of the heart; where the impulse conduction of
the heart usually starts; located in the top of the right atrium. 60-100 bpm
16. AV node (atrioventricular node) region of the heart between the right atrium and right
ventricle from which electrical impulses spread to the ventricles during a heartbeat.
40-60bpm
17. bundle of HIS Ability to self initiate electrical activity Rate: 40 - 60 beats per minutes
18. Purkinje fibers fibers that carry stimulation throughout the ventricles. 20-40bpm
19. junctional 40-60bpm
rhythm HR
20. ventricular 20-40bpm
rhythm
21. PR interval 0.12-0.20 seconds Beginning of P to beginning of QRS
22. QRS interval <0.12 seconds. beginning of Q to end of S
23. QT interval <0.44 seconds. Beginning of Q to end of T.
24. meds that pro- azithromycin, ritonavir/lopinavir. Monitor QT interval.
long QT interval
25. ventricular arrhythmias; Torsades, VF, death
2/6
ECG ORIENTATION KAISER
answersStudy(Detailed & Elaborated) ACTUAL EXAM 2025 TEST 100% Solved
online at https://quizlet.com/_hdr9ve
2025!!
1. DEPOLARIZA- Movement of ions (Na+, Ca+, K+) across cell membrane causing inside of cell to
TION become more positive, electrical conduction results in contraction. Na+ channels
open. Positive inside, negative outside.
2. REPOLARIZA- movement of ions across cell membrane where inside of cell is restored to its neg-
TION ative charge. Sodium channels close. Potassium channels open. Active transport
by sodium-potassium pump
3. DEPORIZATION ELECTRICAL
4. CONTRACTION IS MECHANICAL. CONTRACTION FOLLOWS DEPOLARIZATION.
5. WHAT OCCUR ELECTRICAL CONDUCTION
FIRST? ELECTRI-
CAL CONDUC-
TION, OR ME-
CHANICAL CON-
TRACTION?
6. P WAVE ATRIAL DEPOLARIZATION
7. QRS VENTRICAL DEPOLARIZATION
8. T WAVE ventricular repolarization
9. REFRACTORY PE- the period of resistance to stimulation, cardiac cells unable to respond to stimulus
RIOD
10. relative refracto- cardiac cells have repolarized enough to respond to strong stimulus
ry period
11. automaticity Ability of pacemaker cells to spontaneously initiate an electrical impulse, SA node,
AV junction, and Purkinje fibers
1/6
, ECG ORIENTATION KAISER
Study online at https://quizlet.com/_hdr9ve
12. excitability ability to respond to stimuli
13. conductivity Ability to receive an electrical stimulus and conduct that impulse to adjacent cells -
all cardiac cells possess this.
14. contraction Cardiac cells shorten, causing muscular contraction in response to an electrical
stimulus
15. SA node Sino-atrial node; the pace-maker of the heart; where the impulse conduction of
the heart usually starts; located in the top of the right atrium. 60-100 bpm
16. AV node (atrioventricular node) region of the heart between the right atrium and right
ventricle from which electrical impulses spread to the ventricles during a heartbeat.
40-60bpm
17. bundle of HIS Ability to self initiate electrical activity Rate: 40 - 60 beats per minutes
18. Purkinje fibers fibers that carry stimulation throughout the ventricles. 20-40bpm
19. junctional 40-60bpm
rhythm HR
20. ventricular 20-40bpm
rhythm
21. PR interval 0.12-0.20 seconds Beginning of P to beginning of QRS
22. QRS interval <0.12 seconds. beginning of Q to end of S
23. QT interval <0.44 seconds. Beginning of Q to end of T.
24. meds that pro- azithromycin, ritonavir/lopinavir. Monitor QT interval.
long QT interval
25. ventricular arrhythmias; Torsades, VF, death
2/6
