Key result
Ambiguous HRV interpretation makes serial within-patient analysis optimal for detecting developing pathology.
Why the study?
Many techniques to quantify heart rate variability promise insight into physiological or psychological states, warranting a critical perspective on HRV analysis and future directions.
This perspective highlights the physiological complexities of heart rate variability and suggests its best future use may be in serial intra-individual analysis to detect early pathological changes.
Answers are grounded in this paper and cite their sources.
Caution against single-measure HRV interpretation in practice; leaves open serial intra-individual monitoring for early pathology detection.
The heart may be a mirror of the soul, but the human mind is more than its heart rate variability (HRV). Many techniques to quantify HRV promise to give a view of what is going on in the body or even the psyche of the subject under study. This "Hypothesis" paper gives, on the one hand, a critical view on the field of HRV-analysis and, on the other hand, points out a possible direction of future applications. In view of the inherent variability of HRV and the underlying processes, as lined out here, the best use may be found in serial analysis in a subject/patient, to find changes over time that may help in early discovery of developing pathology. Not every future possibility is bright and shining, though, as demonstrated in a fictional diary excerpt from a future subject, living in a society geared toward preventive medicine. Here implanted biochips watch over the health of the population and artificial intelligence (AI) analyses the massive data flow to support the diagnostic process.
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John M. Karemaker (2020) conducted a review in Heart Rate Variability. Heart Rate Variability (HRV) monitoring was evaluated. Heart rate variability interpretation is complex and ambiguous, suggesting its best clinical use may be in serial analysis within individuals to detect developing pathology over time.
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