View larger version (37K):
[in this window]
[in a new window]
|
Figure 1. A two-year-old boy came to medical attention because he lost consciousness four times over a period of five months. Three of the episodes occurred when the child became upset. These episodes had previously been diagnosed as "breath-holding spells." He was also found to have severe sensorineural hearing loss. The child was taking no medication. There was no family history of sudden cardiac death.
Panel A is a 12-lead electrocardiogram, showing marked prolongation of the QT interval (QT corrected for heart rate, 0.75 sec) with T-wave alternans. Panel B compares the flattened and diminished auditory evoked responses of . . . [Full Text of this Article] |
Previous
