Examination of New Electrocardiographic Repolarization Markers in Diabetic Patients with Noncritical Coronary Artery Disease

Table 2

Electrocardiographic findings of the study population.

Parameters	Diabetic patients with noncritical CAD (n = 84)	Diabetic patients with NCA (n = 84)	P Value
Heart rate (bpm)	74.4 ± 13.1	70.0 ± 13.6	0.036
QRS ms	88.0 ± 12.0	91.4 ± 9.8	0.053
QT ms	381.0 ± 30.3	368.6 ± 29.1	0.008
QTc ms	407.5 (359–450)	389 (339–430)	<0.001
QTd ms	24 (10–40)	22 (6.4–41)	0.013
QTdc ms	26.7 ± 6.1	23.1 ± 10.8	0.010
Tp-e ms	95.7 ± 12.2	73.6 ± 9.8	<0.001
JT ms	293.8 ± 22.0	283.5 ± 30.9	0.014
JTc ms	313.6 ± 12.3	302.4 ± 33.7	0.005
Tp-e/QT	0.25 ± 0.03	0.20 ± 0.03	<0.001
Tp-e/QTc	0.23 (0.19–2.33)	0.19 (0.14–0.25)	0.007
Tp-e/JT	0.33 ± 0.04	0.26 ± 0.04	<0.001
Tp-e/JTc	0.30 ± 0.03	0.24 ± 0.03	<0.001

Quantitative variables were expressed as mean ± standard deviation (SD) and categorical variables as a median (min–max value). Bpm: beat per minute; ms: millisecond; QT interval: the interval between the start of the QRS complex and the T wave’s end; T wave’s end: the end of the T wave is determined by the tangent method. The intersection of a tangent to the sharpest slope of the last limb of the T wave and baseline is referred to as the end of the T wave [18]. QTc: corrected QT interval; QTd: QT dispersion (the difference in QT intervals between the maximum and minimum); QTdc: corrected QT dispersion; Tp-e: T-peak to T-end interval; JT: JT interval (the interval between the end of the QRS complex (J point) and the start of the T wave); JTc: corrected JT interval.