Key result
Ultra-short HRV indices, such as 10-s and 1-min RMSSD, strongly correlated with standard 5-min recordings (mean Pearson ρ 0.913 and 0.944, respectively) in patients with dyslipidemia.
Why the study?
Heart rate variability evaluates autonomic nervous system dysfunction but standard methods are impractical in most clinical settings, prompting evaluation of ultra-short HRV parameters from standard ECGs in dyslipidemia.
Do ultra-short HRV indices reliably correlate with standard 5-min recordings for evaluating autonomic dysfunction in patients with dyslipidemia?
Observational (n=59)
Do ultra-short HRV indices reliably correlate with standard 5-min recordings for evaluating autonomic dysfunction in patients with dyslipidemia?
Effect estimate: Pearson ρ 0.913 (10-s) and 0.944 (1-min)
Ultra-short HRV parameters (10-s and 1-min) strongly correlate with standard 5-min recordings, offering a practical method for evaluating autonomic dysfunction in dyslipidemia using standard ECG strips.
May support convenient autonomic assessment in dyslipidemia clinics; hypothesis-generating and requires larger validation before practice change.
Dyslipidemia is associated with autonomic nervous system (ANS) dysfunction. Heart rate variability (HRV) is a powerful tool for evaluating the ANS and for cardiovascular risk stratification. Yet, the methodologies used are impractical in most clinical settings and therefore, are usually not applied. The current study aimed to evaluate the reliability of ultra-short HRV parameters, which are easily calculated from any standard ECG, as a practical method for ANS study, with a focus on patients with dyslipidemia. Fifty-nine volunteers with dyslipidemia underwent HRV study of parametric and power spectral indices according to accepted methods. Correlations were calculated between ultra-short HRV indices (five 1-min and five 10-s segments) and standard 5-min recordings. Correlations were found between 10-s and 1-min RMSSD and 5-min recordings (mean Pearson ρ correlation coefficients of 0.913 and 0.944, respectively, and mean concordance correlation coefficients of 0.855 and 0.938, respectively). Associations were found between other ultra-short HRV parameters (SDNN, maximum RR, minimum RR, pNN50, ln(RMSSD) and 5-min recordings. In addition, average RR, HRV-TI, NN50, TP, LF/HF, ln(SDNN), ln(HRV-TI), ln(TP) and ln(LF/HF) from 1-min recordings were associated with 5-min values. In conclusion, some ultra-short HRV parameters can be used for ANS evaluation and presumably, for cardiovascular risk stratification among patients with dyslipidemia. These parameters seem to be of great practical value for both inpatient and outpatient settings, because most can be calculated from a standard 10-s ECG strip. The prognostic implications of ECG-derived, ultra-short HRV parameters in patients with dyslipidemia should be further evaluated in future studies.
No takes yet. Share an insight, caveat, or question.
Udi Nussinovitch (2020) conducted an observational in Dyslipidemia (n=59). Ultra-short HRV indices (10-s and 1-min segments) vs. Standard 5-min HRV recordings was evaluated on Correlation between ultra-short HRV indices and standard 5-min recordings (Pearson ρ 0.913 (10-s) and 0.944 (1-min)). Ultra-short HRV indices, such as 10-s and 1-min RMSSD, strongly correlated with standard 5-min recordings (mean Pearson ρ 0.913 and 0.944, respectively) in patients with dyslipidemia.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: