Reassure her that this is normal

A new mother is concerned that her child occasionally “turns blue.” On further questioning, she mentions that this is at her hands and feet. She does not remember the child’s lips turning blue. She is otherwise eating and growing well. What would you do now?
A) Reassure her that this is normal
B) Obtain an echocardiogram to check for structural heart disease and consult cardiology
C) Admit the child to the hospital for further observation
D) Question the validity of her story

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