What is a common symptom that should prompt further investigation in children with cardiac defects?

Exercise intolerance is a significant symptom that should raise concern when assessing children with cardiac defects. It refers to the inability to perform physical activities that are typical for their age group, which can be indicative of underlying cardiac issues. In children with heart defects, the heart may struggle to deliver adequate blood flow and oxygen to meet the demands of their bodies during exertion. As a result, they may become easily fatigued or experience shortness of breath during activities that they would normally tolerate well.

Recognizing exercise intolerance is crucial because it can lead to early identification of potentially serious cardiac conditions, allowing for more timely intervention and management. This symptom may manifest as complaints of tiredness during play, decreased participation in sports, or an unusual need for rest after minimal physical activity, further underscoring the importance of monitoring this aspect in pediatric patients with known or suspected heart conditions.