Which of the following is a common symptom of pediatric heart failure?

Rapid breathing and fatigue are indeed common symptoms of pediatric heart failure. In young patients, heart failure often presents with respiratory symptoms due to fluid overload and the heart's inability to effectively pump blood. This can lead to pulmonary congestion, causing rapid or labored breathing. Fatigue is another prevalent symptom because the body is not receiving enough oxygen-rich blood, making everyday activities more strenuous for the child.

The presence of these symptoms highlights the diminished efficiency of the cardiovascular system in pediatric heart failure, which impacts the child's activity level and overall well-being. Parents and caregivers may notice that the child tires easily, has difficulty breathing during exertion, or experiences an increased respiratory rate even at rest, which are key indicators of heart failure in the pediatric population.