presyncope or fatigue.
[ncbi.nlm.nih.gov]
Symptoms of bradycardia Dizziness Syncope, presyncope Lack of increasing heart rate during physical activity Adams-Stokes attacks Tachycardia-bradycardia syndrome presents
[amboss.com]
It is often associated with clinical signs and symptoms including fatigue, lightheadedness, presyncope, syncope, dyspnea on exertion, chest discomfort, or palpitations.2 It
[emra.org]