ECG Flashcards
1
Q
P-Wave
A
- atrial depolarization
- starts atrial contraction
2
Q
QRS Complex
A
- ventricular depolarization
- atrial repolarization
- starts ventricular contraction
3
Q
T-Wave
A
- ventricular repolarization
- starts ventricular relaxation
4
Q
Tachycardia
A
- rapid heart rate (more than 100 bpm)
- sinus (normal) or ventricular
5
Q
Bradycardia
A
- slow heart rate (less than 60 bpm)
- AV node taking over
6
Q
Myocardial Ischemia
A
- not enough oxygenated blood to heart tissue
7
Q
Acute Myocardial Infarction (heart attack)
A
- blood supply ruptured/blocked
- elevated (blank) segment
8
Q
Right Ventricle Pressure
A
2-35 mmHg
9
Q
Left Ventricle Pressure
A
3-125 mmHg
10
Q
Wall thickness and ventricle pressure
A
the left ventricle walls are thicker because there is a higher pressure
11
Q
Tricuspid VS Bicuspid
A
TRICUSPID
- 3 cusps
- between RA and RV
BICUPID
- cusps
- between LA and LV
- less leakier / better for high pressure
12
Q
Papillary Muscles
A
- contract as heart contracts
- anchors valve
- controls tension on chordae tendinae
