Cardiac Medicine Certification (CMC) Exam 2025 – 400 Free Practice Questions to Pass the Exam

Sinus bradycardia is characterized by a heart rate that is slower than the normal resting heart rate for adults, which typically ranges from 60 to 100 beats per minute (BPM). Specifically, sinus bradycardia is defined as a heart rate of less than 60 BPM.

The range of 50-60 BPM is considered a common presentation for sinus bradycardia, where patients may experience mild symptoms or may be asymptomatic altogether. In certain individuals, particularly athletes or those who have enhanced vagal tone, heart rates can be lower without resulting in adverse effects.

Understanding sinus bradycardia’s heart rate range is crucial for recognizing its clinical significance, particularly in terms of whether it is symptomatic or requires intervention. In comparing with the other ranges presented, such as 40-60 BPM or 30-40 BPM, these could include more severe forms of bradycardia or significant conduction issues, which can warrant immediate attention, whereas the chosen range indicates a more typical case of sinus bradycardia that may not immediately pose a clinical risk.