exam 2- basic dysrhythmias Questions and Answers (Basic A Dysrhythm
Study online at https://quizlet.com/_h666i4
1. what do you do if artifacts occur on an ECG? check connections in equipment
2. rhythm starts in the SA node, 60-100 BPM, normal normal sinus rhythm
conduction pathway
3. normal P wave length .06-.20
4. the time of passive of impulse through the atria, P wave
causing atrial depolarization (atrial contraction)
5. normal PR interval length .12-.20
6. time taken for the impulse the spread through PR interval
the atria, AV node, and bundle of HIS, bundle
branches, & purkinje fibers, right up until ventric-
ular contraction.
(atrial contraction -> beginning of ventricular con-
traction)
7. normal QRS length <.12
8. time taken for depolarization of both ventricles QRS
(systole- ventricular contraction)
9. normal ST segment length .12
10. time between ventricular depolarization and re- ST segment
polarization; should be isoelectric.
(end of systole -> beginning of diastole)
11. normal T wave length .16
12. ventricular relaxation (diastole) T wave
13. is K or Na higher inside the cell? K
1/8
, exam 2- basic dysrhythmias Questions and Answers (Basic A Dysrhythm
Study online at https://quizlet.com/_h666i4
14. is K or Na higher outside the cell? Na
15. what happens with depolarization of a cell? Na influx into cell
16. normal QT .34-.43
17. time taken for entire depolarization/repolariza- QT
tion of ventricles
(ventricular contraction + relaxation)
(ventricular diastole + systole)
18. the ability of a cardiac cell to fire spontaneously automaticity
without being activated
19. the ability of a cell to become depolarized; deter- excitability
mined by the length of time after depolarization
that they can be restimulated (the refractory pe-
riods)
20. SA node is firing <60 BPM sinus bradycardia
P, QRS, T all normal
regular rhythm
21. is sinus bradycardia ever normal? yes- it's only significant when
symptomatic
22. symptoms of sinus bradycardia syncope, chest pain, pale/cool
skin, hypotension, weakness,
angina, dizziness, confusion, SOB
23. SA node firing >100 BPM sinus tachycardia
regular rhythm
2/8
Study online at https://quizlet.com/_h666i4
1. what do you do if artifacts occur on an ECG? check connections in equipment
2. rhythm starts in the SA node, 60-100 BPM, normal normal sinus rhythm
conduction pathway
3. normal P wave length .06-.20
4. the time of passive of impulse through the atria, P wave
causing atrial depolarization (atrial contraction)
5. normal PR interval length .12-.20
6. time taken for the impulse the spread through PR interval
the atria, AV node, and bundle of HIS, bundle
branches, & purkinje fibers, right up until ventric-
ular contraction.
(atrial contraction -> beginning of ventricular con-
traction)
7. normal QRS length <.12
8. time taken for depolarization of both ventricles QRS
(systole- ventricular contraction)
9. normal ST segment length .12
10. time between ventricular depolarization and re- ST segment
polarization; should be isoelectric.
(end of systole -> beginning of diastole)
11. normal T wave length .16
12. ventricular relaxation (diastole) T wave
13. is K or Na higher inside the cell? K
1/8
, exam 2- basic dysrhythmias Questions and Answers (Basic A Dysrhythm
Study online at https://quizlet.com/_h666i4
14. is K or Na higher outside the cell? Na
15. what happens with depolarization of a cell? Na influx into cell
16. normal QT .34-.43
17. time taken for entire depolarization/repolariza- QT
tion of ventricles
(ventricular contraction + relaxation)
(ventricular diastole + systole)
18. the ability of a cardiac cell to fire spontaneously automaticity
without being activated
19. the ability of a cell to become depolarized; deter- excitability
mined by the length of time after depolarization
that they can be restimulated (the refractory pe-
riods)
20. SA node is firing <60 BPM sinus bradycardia
P, QRS, T all normal
regular rhythm
21. is sinus bradycardia ever normal? yes- it's only significant when
symptomatic
22. symptoms of sinus bradycardia syncope, chest pain, pale/cool
skin, hypotension, weakness,
angina, dizziness, confusion, SOB
23. SA node firing >100 BPM sinus tachycardia
regular rhythm
2/8
