Calculate the heart rate based on this rhythm strip.
The Correct Answer is ["60"]
A common method is the "6-second rule," where you count the number of QRS complexes in a
6-second strip and multiply by 10 to get the beats per minute (bpm).
6x 10= 60 bpm
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A depressed ST segment is seen in hypokalemia, not hyperkalemia.
B. U waves are characteristic of hypokalemia, not hyperkalemia.
C. Tall, peaked T waves are a hallmark ECG finding in hyperkalemia, especially when potassium levels exceed 6.0 mEq/L.
D. T wave inversions occur in ischemia, not hyperkalemia.
Correct Answer is D
Explanation
A. Sinus bradycardia – HR < 60 bpm.
B. Ventricular tachycardia – Would have wide QRS complexes and no visible P waves.
C. Normal sinus rhythm – HR should be 60-100 bpm, so this is slightly elevated.
D. Heart rate of 102 bpm – Tachycardia (>100 bpm). Regular rhythm, P waves present, PR interval 0.20 sec, QRS 0.10 sec – Normal sinus conduction.
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