Table 4.

Measurement of electrocardiogram parameter during electroconvulsive therapy

	Group	Baseline	T0	T1	T2	T3	T4	T5	T6	T7
TpTe (ms)	Group C	65 ± 18	58.7 ± 12.8	62.1 ± 12.4	63.6 ± 8.3	62.5 ± 14.8	66 ± 13.1	65.5 ± 16.7	67.6 ± 15.4	63.6 ± 16.4
	Group R	64.8 ± 11	63.8 ± 10.7	64.7 ± 9.7	67.5 ± 12.1	67.4 ± 14.2	66.5 ± 17.2	66.2 ± 19.1	67 ± 13.3	68.3 ± 12.7
TpTe/QT	Group C	0.18 ± 0.04	0.18 ± 0.04	0.2 ± 0.05	0.2 ± 0.03	0.19 ± 0.04	0.19 ± 0.04	0.19 ± 0.04	0.19 ± 0.03	0.18 ± 0.03
	Group R	0.17 ± 0.03	0.18 ± 0.04	0.18 ± 0.03	0.19 ± 0.03	0.19 ± 0.04	0.19 ± 0.04	0.19 ± 0.05	0.19 ± 0.04	0.19 ± 0.04
TpTe/QTc	Group C	0.17 ± 0.04	0.15 ± 0.04	0.16 ± 0.04	0.16 ± 0.02	0.15 ± 0.03	0.15 ± 0.03	0.15 ± 0.04	0.15 ± 0.04	0.15 ± 0.04
	Group R	0.17 ± 0.04	0.16 ± 0.04	0.17 ± 0.04	0.17 ± 0.04	0.18 ± 0.04	0.17 ± 0.05	0.18 ± 0.05	0.17 ± 0.05	0.17 ± 0.04
TpTe/RR	Group C	78.5 ± 22.4	98.2 ± 28.8	101.5 ± 28.2*	95.6 ± 20	89.9 ± 23.4	95.4 ± 18.5	94.4 ± 16.7	94.2 ± 16	87.4 ± 18.2
	Group R	71.9 ± 19.3	81.5 ± 27.2	76.8 ± 21.8	85.6 ± 24.8	86.3 ± 22.9	83 ± 18.6	82.1 ± 24.1	82.2 ± 19.1	83.6 ± 18
TpTe/2√RR	Group C	69.9 ± 17.3	76.8 ± 19.8	77.7 ± 19.2	76.5 ± 10.8	74.7 ± 12.8	74.1 ± 14.6	73.5 ± 16.1	73.7 ± 19.3	73.3 ± 16.6
	Group R	68.9 ± 12.1	70.4 ± 13.6	71.3 ± 21.5	74.2 ± 15.4	79.2 ± 18	77.2 ± 17.3	74.4 ± 23.1	76.2 ± 20.2	75.5 ± 17.7
TpTe/3√RR	Group C	68.2 ± 17.1	70.7 ± 16.7	72.3 ± 16.7	71.9 ± 9.7	70.7 ± 12.2	69.8 ± 13.8	69.1 ± 15	69.9 ± 18.5	68.1 ± 16.8
	Group R	67.9 ± 11.2	68 ± 12	69.4 ± 18.8	71.5 ± 13.7	76 ± 15.9	74.6 ± 17	71.8 ± 21.8	74 ± 19.1	73.6 ± 16.8

Data are presented as mean ± standard deviation

TpTe T peak-T end, QT QT interval, QTc corrected QT Interval, RR RR interval, Group C patients received IV saline, Group R patients received IV remifentanil (1 µg/kg), T0 immediately after electrical convulsion, T1–T7 1–7 min after electrical stimulus

*p < 0.05 versus control group