Microvolt T wave alternans in adults with congenital heart diseases characterized by right ventricle pathology or single ventricle physiology: a case control study

Table 1 Microvolt T wave alternans in the study and control groups

	Study group (n = 102)	Control group (n = 45)	Study group vs control group p
MTWA(+) (%)	18 (17.6)	1 (2.2)	0.008
MTWA(ind) (%)	18 (17.6)	0 (0)	0.002
MTWA(noise) (%)	10 (9.8)	2 (4.4)	0.35
MTWA(−) (%)	56 (54.9)	42 (93.4)	0.00001
MTWA(non -) (%)	36 (35.3)	1 (2.2)	0.00001

MTWA(+) – positive result; MTWA(ind) - result indeterminate due to patient factors; MTWA(noise) – result indeterminate due to technical factors; MTWA(−) –negative result; MTWA(non-) – non-negative (abnormal) result.

ISSN: 1471-2261