Histiocytoid cardiomyopathy presenting with Wolff-Parkinson-White syndrome

A 14 month old African American girl with a history of Wolff-Parkinson-White (WPW) syndrome presented to the emergency department apnoeic, cyanotic, and without a pulse. She had suddenly become limp and unarousable. She did not respond to resuscitative efforts and was pronounced dead. The patient had been diagnosed with WPW when she was 6 months old, after an irregular rhythm was noted in a routine examination. ECG showed normal sinus rhythm with infrequent preventricular contractions, a delta wave, a PR interval of 0.06 seconds, and a QRS interval …