An 11-month-old boy with new bradycardia

摘要

An 11-month-old boy is brought to the emergency department for 1 day of decreased appetite, vomiting, and diarrhea. His parents have both been ill with similar symptoms, and the boy tests positive for norovirus. In the course of his evaluation, he is found to be significantly bradycardic, with a heart rate varying from 55 to 65 beats/min. His parents report an uneventful prenatal and birth history, and he has since been a healthy child. Notably, recorded heart rates were age appropriate at all previous health maintenance visits.