Which arrhythmia is expected to exhibit a normal peripheral pulse?

Atrial flutter is known to exhibit a regular atrial rate, which often results in a more organized rhythm compared to other arrhythmias. In atrial flutter, the atria contract at a rapid but organized rate, typically between 240 and 340 beats per minute, leading to strong and effective cardiac contractions. As a consequence, this can facilitate adequate blood flow and maintain a normal peripheral pulse in many patients.

In contrast, conditions like atrial fibrillation can lead to an irregular and often weaker pulse due to the chaotic electrical activity preventing the heart from contracting effectively. Ventricular tachycardia and premature ventricular contractions may also cause a diminished or absent peripheral pulse due to ineffective heartbeats or loss of coordinated contraction, respectively. Thus, among these options, atrial flutter has the potential to sustain a normal peripheral pulse, making it the correct choice.