Electrochemotherapy of colorectal liver metastases - an observational study of its effects on the electrocardiogram

Table 4 Median changes in ECG and HRV parameters after ECT.

Evaluated parameters	Median change	Percentile		p
		25%	75%
mean ppQTc [ms]	-5.03	-17.40	2.45	0.469
mean NN [ms]	-161.00	-260.66	-25.05	0.020
SDNN [ms]	-11.05	-18.09	-3.12	0.131
SDSD [ms]	-3.86	-11.26	0.272	0.232
RMSSD [ms]	-3.85	-11.24	0.275	0.232
pNN50 [%]	-0.18	-1.50	0.00	0.461
SD1 [ms]	-2.73	-7.96	0.19	0.232
SD2 [ms]	-15.95	-26.43	-3.52	0.065
SD1/SD2	0.01	-0.11	0.12	0.695
LF [ms ² ]	-93.15	-303.13	-30.15	0.049
HF [ms ² ]	-9.93	-49.76	38.86	0.625
nLF [n.u.]	-12.56	-16.81	-10.49	0.049
nHF [n.u.]	12.56	10.49	16.81	0.049
LF/HF	-1.04	-3.26	-0.90	0.432

Definitions of parameters are given in Table 2. Statistical significance of the change is presented in the right-most column (Wilcoxon signed rank test).

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