P‐Wave dispersion increases in prehypertension

Figures & data

Table I. Demographic characteristics of the study population.

	Group 1 (n = 78)	Group 2 (n = 78)	p‐value
Age (years)	44.6±11.2	43.3±7.0	0.382
Male sex, n (%)	45 (57.7)	43 (55.1)	0.747
Smoking, n (%)	29 (37.2)	27 (34.6)	0.739
Dyslipidemia, n (%)	9 (11.5)	8 (10.3)	0.797
Familial history of CAD, n (%)	14 (17.9)	12 (15.4)	0.667
SBP (mmHg)	130.8±1.8	112.9±7.0	<0.001
DBP (mmHg)	81.9±3.2	75.5±6.1	<0.001
Height (cm)	166.8±9.0	167.4±8.5	0.668
Weight (kg)	76.7±10.7	74.4±12.8	0.227
BMI (kg/m^2)	27.9±4.0	27.0±4.3	0.148
Heart rate (bpm)	79.0±10.4	80.2±10.0	0.483

BMI, body mass index; CAD, coronary artery disease; SBP, systolic blood pressure; DBP, diastolic blood pressure.

Table II. Echocardiographic parameters of the study population.

	Group 1	Group 2	p‐value
LVEF (%)	64.9±3.5	65.7±4.5	0.204
LAD (cm)	3.52±0.25	3.46±0.32	0.196
E (cm/s)	0.80±0.1	0.82±0.2	0.304
A (cm/s)	0.64±0.1	0.66±0.2	0.409
DT (ms)	191.9±25.2	188.9±16.8	0.382
IVRT (ms)	87.4±9.9	85.6±9.4	0.243

A, atrial contraction signal; DT, deceleration time; E, early diastolic flow; IVRT, isovolumetric relaxation time; LAD, left atrial dimension; LVEF, left ventricular ejection fraction.

Table III. Comparison of P-wave values of the groups.

	Group 1	Group 2	p‐value
Pmax (ms)	103.59±19.8	93.59±13.4	<0.001
Pmin (ms)	53.08±12.20	53.74±12.10	0.73
PWD (ms)	50.51±18.6	39.85±10.6	<0.001

Pmax, P maximum; Pmin, P minimum; PWD, P dispersion.

Figure 1. Associations of P‐wave characteristics between two groups. Darker bars indicate normotensive group, lighter bars indicate prehypertensive group. Pmax, maximum P‐wave; Pmin, minimum P‐wave; PWD, P‐wave dispersion. *p<0.001; †p>0.05.