Cardiac Ion Channelopathies and the Sudden Infant Death Syndrome

Figure 5

Electrocardiographic data in 42 sets of parents who had infants with SIDS [80]. In 27 sets of parents, both parents had a normal ECG (left bar). In 15 sets (36%, middle bar), at least one parent had an abnormal ECG (middle bar), including a long QT interval in 11 sets (26%, right bar).