ECGs Flashcards
1
Q
P wave
A
- Represents the depolarization of the atria
- 1st elevation from the isoelectric line
- Caused by the SA node
2
Q
QRS
A
- Ventricular contraction
- Normally less than 0.10s
3
Q
PR interval
A
- Beginning of the P wave to beginning of QRS
- 0.12-0.20s
4
Q
PR interval
A
- Beginning of the P wave to beginning of QRS
- 0.12-0.20s
5
Q
1) ST segment
2) T wave
A
1) Time between ventricular depolarization and repolarization
2) Ventricular repolarization
Absolute refractory period
6
Q
QT interval
A
- Beginning of Q wave to end of T wave
- Represents depolarization and repolarization of the ventricles
7
Q
Normal sinus rhythm
A
- HR: 60-100bpm
- P wave before every QRS
- QRS less than 0.10s
8
Q
Normal sinus rhythm
A
- HR: 60-100bpm
- P wave before every QRS
- QRS less than 0.10s
9
Q
Atrial HR vs. Ventricular HR
A
- Atrial: count the number of P waves and multiply by 10
- Ventricular: count the number of R waves and multiply by 10
10
Q
Sinus arrhythmia
A
- Rate is 60-100bpm
- Rhythm is irregular
- P wave is irregular
