1020- ECG intro Flashcards
describe conduction system of the heart describe normal ECG waveform & the electrical impulses of cardiac cycle they represent know set up for ECG recognize arrhythmias, atrioventricular blocks and bundle branch blocks (RT & LT)
1
Q
the cardiac cycle is composed of 2 main parts
A
Diastole & systole
2
Q
diastole is when
A
the heart chambers relax
3
Q
systole is when
A
the heart chambers contract
4
Q
the “lubb” in lubb-dupp is the sound of
A
MV & TV valves closing at beginning of systole
5
Q
the “dupp” in lubb-dupp is the sound of
A
AoV & PV valve closing at the end of systole
6
Q
the 3 phases of the cardiac cycle
A
- heart relaxes & fills (AV open, SL closed)
- atria contract, ventricles contract
- ventricles contract, atria relax (AV closed, SL open)
7
Q
A
