What common symptom is associated with congenital heart defects in newborns?

Cyanosis is a common symptom associated with congenital heart defects in newborns due to inadequate oxygenation of the blood. This condition occurs when there is a right-to-left shunt or when the heart is unable to effectively circulate oxygenated blood to the body, leading to reduced oxygen levels in the bloodstream. As a result, the skin, especially around the lips and extremities, may take on a bluish hue, which is a hallmark sign of hypoxemia.

Congenital heart defects can lead to a variety of physiological challenges, such as mixing of oxygen-rich and oxygen-poor blood or obstructed blood flow, both of which contribute to the development of cyanosis. Identifying this symptom early is crucial as it can indicate an immediate need for medical intervention to address the underlying cardiac issues and improve the infant's oxygenation and overall health.

While other symptoms, such as crying episodes or excessive yawning, can be observed in various contexts, they are not specific indicators of congenital heart defects and can arise from other non-cardiac issues. Hyperactivity is generally not a symptom seen in newborns; therefore, it is not relevant in this context.