Upda
1. SA Node normal pacemaker of the heart bc it has the fastest inherent rate
2. SA Node
intrinsic rate for 60-100
adults
3. Intra-Atrial Path- carries the impulse from the atria to the AV node
ways
4. AV Node delays the impulse to allow time for ventricle filling
5. Bundle of HIS connects the AV node to the Right and Left bundle branches
6. Right and Left
Bundle carry the electrical impulses to the ventricles
Branches
7. Perkinje Fibers terminal conduction system of ventricles makes contractions happen
8. Junctional Tissue serves as the backup pacemaker
9. Junctional
Tissue Intrinsic 40-60
Rate
10. Ventricular Tis- serves as the LAST RESORT pacemaker
sue
11. Ventricular Tis-
sue Intrinsic 20-40
Rate
12. What kind of
in- formation electrical activity of the heart
does an ECG
show?
13. what does the
horizontal (left time
to
1/
8
, ECG Exam Questions With 100% Correct Answers | Verified | Latest
Upda
right) axis tell
you
? 0.04
14. how many
sec- onds is
one sin- gular
box? 30 boxes
15. how many
large boxes
makes 6
seconds ? voltage
16. what does the
vertical (up
and down)
axis tell you ?
17. how many 0.1 mV or 1 mm
milli- volts (mV)
or mil- limeters
(mm) is one
box?
18. what is atrial or ventricular hypertrophy, ischemic ST changes, or anatomical
voltage useful defects
in detect- ing ?
19. what does the
P wave
represent ? atrial depolarization
20. what are possi-
ble causes of a
P wave electrolyte imbalances, conduction abnormalities, and disease processes
abnormali- ty ? (COPD, PE, valve diseases, heart failure, congenital heart defects)
21. ventricular depolarization
2/
8