Electrocardiographic features of patients with earthquake related posttraumatic stress disorder

Table 3 Electrocardiographic features of the groups (mean ± SD)

	PTSD(n = 12)	Control(n = 12)	P value
P wave parameters
Pmax (ms)	96 ± 15	96.6 ± 11.5	NS
Pmin (ms)	67.7 ± 14.4	72.5 ± 8.6	NS
Pd (ms)	27.7 ± 11.3	24.2 ± 11.6	NS
QT parameters
QT V5 (ms)	361 ± 41.3	350 ± 37.7	NS
cQT V5 (ms)	403.4 ± 35.1	401.2 ± 20.2	NS
Qtmax (ms)	373.3 ± 44.6	358.3 ± 32.4	NS
Qtmin (ms)	340 ± 36.2	325.8 ± 36.3	NS
QTd (ms)	33.3 ± 26.1	32.5 ± 17.6	NS
cQTmax (ms)	415.5 ± 27.5	411.5 ± 23.2	NS
cQTmin (ms)	380 ± 37.5	373.8 ± 30.3	NS
cQTd (ms)	35.5 ± 26.8	37.7 ± 19.5	NS
T wave parameters
TpTe V5 (ms)	80.4 ± 17.4	83.3 ± 12.3	NS
cTpTe V5 (ms)	89.3 ± 15.2	95.4 ± 10.9	NS
Presence of negative T wave (anterior leads) (%)	66.6	58.3	NS
Presence of negative T wave (inferior leads) (%)	16.6	0	NS
Presence of U wave (%)	8.3	8.3	NS
PR interval (ms)	145.83 ± 23.53	143.33 ± 16.70	NS
QRS duration (ms)	73.3 ± 9.6	82.5 ± 11.4	NS
Right ventricle intrinsicoid deflection (ms)	26.6 ± 6.8	28.9 ± 4.9	NS
Left ventricle intrinsicoid deflection (ms)	34.5 ± 4	34.4 ± 5.1	NS
R wave amplitude	0.9 ± 0.3	1.2 ± 0.5	NS
Infra HIS conduction abnormalities
Left anterior hemiblock (%)	0	8.3	NS
Left axis deviation (%)	0	8.3	NS
ST segment elevation (%)	0	16.6	NS

PTSD: Posttraumatic stress disorder; NS: Not significant; Pmax: Maximum P wave duration; Pmin: Minimum P wave duration; Pd: P wave dispersion; cQT: Corrected QT interval; QTd: QT dispersion; cQTd: Corrected QT dispersion; QTmax: Maximum QT interval; cQTmax: Corrected maximum QT interval; QTmin: Minimum QT interval; cQTmin: Corrected minimum QT interval; TpTe: Tpeak to Tend interval; cTpTe: Corrected Tpeak to Tend interval.