Application of the Lomb-Scargle Periodogram to InvestigateHeart Rate Variability during Haemodialysis

Table 4

Location of the maximum number of false beats that can be included in a five-minute segment before failure, with LF, HF, and LF/HF (n.u.) recorded in the final “successful” PSD estimate.

Method	Ectopic beats (individual)				Ectopic beats (group)				Missed trigger (individual)				Missed trigger (group)
	Max. false beats	LF/HF	LF	HF	Max. false beats	LF/HF	LF	HF	Max. false beats	LF/HF	LF	HF	Max. false beats	LF/HF	LF	HF
True value		0.47	0.29	0.63		0.47	0.29	0.63		0.47	0.29	0.63		0.47	0.29	0.63
“Baseline”	23	0.55	0.32	0.58	35	0.56	0.32	0.58	20	0.57	0.33	0.57	32	0.64	0.35	0.55
“Rules” edited RR intervals	17	0.64	0.33	0.52	6	0.61	0.32	0.53	18	0.69	0.34	0.49	16	0.76	0.36	0.47
CSI	0	0.77	0.38	0.50	0	0.75	0.37	0.50	1	0.78	0.39	0.50	1	0.75	0.38	0.50
OUGP	4	0.45	0.31	0.68	4	0.64	0.37	0.58	7	0.75	0.42	0.56	2	0.89	0.45	0.51
EMD	8	0.28	0.22	0.76	4	0.50	0.32	0.65	9	0.62	0.37	0.60	4	0.45	0.29	0.66
LS (all points)	7	0.34	0.24	0.70	2	0.37	0.25	0.68	3	0.38	0.25	0.66	2	0.52	0.31	0.61