Physiological AdaptationQuestion 776 of 2368
A client has a regular, rapid rhythm of 180 beats per minute with a narrow QRS complex and no identifiable P waves. Which rhythm does the nurse suspect?
- Sinus bradycardia
- Ventricular fibrillation
- Third-degree heart block
- Supraventricular tachycardia
Show answer
Correct answer: Supraventricular tachycardia
SVT has a narrow QRS of 0.1 second or less and a rate over 160. P waves often cannot be seen because the rate is fast.
Source: Nursing Advanced Skills (Open RN, Chippewa Valley Technical College, 2023), Interpret Basic ECG: Ventricular Rhythms. Licensed under CC BY 4.0.
Practice the topic "Physiological Adaptation"Questions last reviewed: 18 October 2026