The nurse is analyzing a 6-second electrocardiogram (ECG) tracing. The P waves and QRS complexes are regular. The PR interval is 0.18 seconds long, and the QRS complexes are 0.08 seconds long. The heart rate is calculated at 70 bpm. The nurse correctly identifies this rhythm as which of the following?
a) Junctional tachycardia
b) Normal sinus rhythm
c) Sinus tachycardia
d) First-degree atrioventricular (AV) block
Answer: b) Normal sinus rhythm
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.