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Table 2 Relationship between MTWA result and demographic or clinical features in the analyzed group

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

 

Analyzed group (n=92)

MTWA (+) (n = 18)

MTWA (ind) (n = 18)

MTWA (−) (n = 56)

MTWA (non-) (n = 36)

MTWA(+) vs MTWA(−) p

MTWA(non-) vs MTWA(−) p

Males (%)

40 (43.5)

13 (72.2)

8 (44.4)

19 (33.9)

21 (58.3)

0.006

0.031

Age (years)

29

28

31,5

29

29.5

0.782

0.620

Median

(18–75)

(19–64)

(20–75)

(18–74)

(19–22)

  

Min-max

       

Operated (%)

28 (27.5)

9 (50)

4 (22.2)

9 (50)

13 (36.1)

0.786

0.663

NYHA

1.0

2.0

2.0

1.0

2.0

0.231

0.040

Median

(1.0-3.0)

(1.0-3.0)

(1.0-3.0)

(1.0-3.0)

(1.0-3.0)

  

Min-max

       

SO 2 (%)

97

96

92.5

97

94.5

0.151

0.047

Median

(69–100)

(75–99)

(73–99)

(69–100)

(73–100)

  

Min-max

       

Pulmonary hypertension (%)

11 (12.0)

1 (5.6)

7 (38.9)

9 (16.1)

2 (5.6)

0.434

0.191

Beta blocker (%)

25 (27.1)

7 (38.9)

3 (16.7)

15 (26.8)

10 (27.8)

0.380

1.0

QRS (ms)

120

120

135

120

125

0.354

0.123

Median

Min-max

(80–200)

(100–200)

(100–180)

(80–200)

(100–200)

  
  1. MTWA(+) – positive result; MTWA(ind) – indeterminate result; MTWA(−) –negative result; MTWA(non-) – non-negative result; SO2 – blood oxygen saturation.