<prompt> A 38-year-old daily laborer has a hea rate of 44 on routine examination. What is the treatment?AtropineCardiac pacingAdrenalineNo treatment required  <response>: Resting hea rates 60 beats min are very common in young healthy individuals and physically conditioned subjects. By definition, sinus bradycardia is a rhythm driven by the SA node with a rate of 60 beatsmin; sinus bradycardia is very common and typically benign. A sinus rate of 40 beatsmin in the awake state in the absence of physical conditioning generally is considered abnormal.Harrison 19e pg: 1468 