The nurse cares for a client with a heart rate of 52 beats per minute. How should the nurse interpret this finding?

A. Tachycardia refers to a heart rate that exceeds the normal adult range, typically greater than 100 beats per minute at rest. It can occur due to various conditions such as fever, pain, anxiety, hypovolemia, hyperthyroidism, or cardiac arrhythmias. In this case, the client’s heart rate is 52 bpm, which is well below the threshold for tachycardia, making this option incorrect. B. Supraventricular tachycardia (SVT) is a type of rapid heart rhythm originating above the ventricles (atria or AV node) and is usually characterized by heart rates of 150–250 bpm. SVT often presents with palpitations, dizziness, shortness of breath, or chest discomfort. A heart rate of 52 bpm is far below the SVT range, so this option is also incorrect. C. Normal adult pulse rate ranges from 60 to 100 beats per minute at rest. A heart rate of 52 bpm is below this normal range, so it cannot be classified as normal. While some healthy athletes may have resting bradycardia due to increased cardiac efficiency, in the general adult population, a rate below 60 bpm is considered abnormal. D. Bradycardia is defined as a resting heart rate less than 60 bpm in adults. It may be asymptomatic or can lead to symptoms such as fatigue, dizziness, syncope, or hypotension if cardiac output is compromised. Causes can include high vagal tone (common in athletes), medications (beta-blockers, calcium channel blockers, digoxin), hypothyroidism, hypothermia, or heart block. In this case, a heart rate of 52 bpm meets the criteria for bradycardia, making this the correct answer.