1. Which rate is considered tachycardia?
2. Which rate is considered bradycardia?
3. True or False: In a normal sinus rhythm, the PR interval is < 120 milliseconds (0.12 seconds) and is consistent across the 6-second ECG strip.
4. Interpret the following ECG readings:
Regularity: regular
Rate: 98 bpm
P wave: uniform in shape; one P wave in front of every QRS complex
QRS complex: < 120 milliseconds
5. A sinus arrhythmia has the following ECG findings: