An unusual case of cyanotic heart disease in a patient with patent foramen ovale and right ventricular hypertrophy.

An unusual case of cyanosis and patent foramen ovale/atrial septal defect with right-sided septal hypertrophy is presented. Mild right ventricular dysfunction led to predominant right-to-left shunting. The atrial defect was surgically closed. The patient is from a family with hypertrophic cardiomyopathy; she is negative for the gene abnormality.