Consideration should be given to testing for the presence of Barth Syndrome which includes the following :
Neutropenia
3-methylgluconic aciduria
Noncompaction cardiomyopathy laboratory studies
Noncompaction cardiomyopathy physical examination
Noncompaction cardiomyopathy echocardiography
Hypertrophic cardiomyopathy MRI
Dilated cardiomyopathy electrocardiogram
Dilated cardiomyopathy MRI
Hypertrophic cardiomyopathy physical examination
Stress cardiomyopathy physical examination