We describe an 18-month-old girl experiencing severe pallid breath-holding spells in whom repeated electrocardiographic, Holter, and electroencephalographic monitoring tests were all normal.
Using a subcutaneous insertable cardiac monitor, severe bradycardia was detected during one of this girl's episodes. This finding led to a pacemaker implantation. Subsequently, her breath-holding spells completely resolved.
This child illustrates the ability of the insertable cardiac monitor to help and diagnose arrhythmias in children with unresolved clinical findings. The ability to implant it with a minimal scar makes it ideal for uncooperative individuals with relative few and unexpected episodes that are hard to diagnose.