Assessment of Parasympathetic Control of Blood Vessel by Pulsation Spectrum and Comparison With Spectral Method of Rr Intervals

Abstract

A new pulse spectrum method of assessing autonomic function was examined in a pharmacological experiment on eight healthy volunteers. The pulse pressure data is obtained under control condition and in parasympathetic blocked by atropine. Compared with the spectral method of heart rate variability (HRV), which is wide-spreading in laboratory studies figure 1, which presents the reassessing cardiovascular autonomic regulation. [1][2][3][4] lationship between heart beat interval and ANS. [15-22] Numerous methods of quantifying heart rate variThe blood pressure (BP) value is sensed by the baroreability have been proposed. Among them, the standard ceptors, and accordingly, the central nervous system deviation, the coefficient of variation, and several indiadjusts the heart rate by both fast vagal action and by ces based on beat-to-beat variations calculated by usslower sympathetic action (baroreflex control of heart ing simple statistics have been used for assessment of rate). The baroreflex also affects the peripheral resistance via sympathetic efferent activity. The heart rate Received: Jan. 3,2003; Accepted: Feb. 8, 2003 influences the cardiac output, which together with the Correspondence: Ming-Shing Young, Professor peripheral resistance determines the value of BP. Department of Electrical Engineering, National Cheng HRV related to ANS has been quantified by conKung University, Tainan, Taiwan ventional techniques, such as power spectrum analysis E-mail: msyoung@mail.ncku.edu.tw that separates the power on the basis of frequency

Peripheral pulse harmonic analysis and its clinical application: A systematic review

“…78 Peripheral Pulse Analyzer: Developed by the Electronic Division of Bhabha Atomic Research Centre in Mumbai, this device measures the rate of change of electrical impedance (dZ/dt) at the wrist while the subject is in a supine position, primarily for variability analysis. 79 Hospital Vital Sign Monitoring Equipment: Originally designed for monitoring patients' vital signs in healthcare settings, equipment such as COLIN BP-508 80 , 81 and TM-2420 82 has also been utilized as a data source for pulse analysis. …”

“…Hospital Vital Sign Monitoring Equipment: Originally designed for monitoring patients' vital signs in healthcare settings, equipment such as COLIN BP-508 80 , 81 and TM-2420 82 has also been utilized as a data source for pulse analysis.…”

“…However, it's worth noting that dysfunction of the sympathetic nervous system can also elevate the intensity of high-frequency harmonics, including those within the C3 to C10. 80 Importantly, Alzheimer's disease patients frequently exhibit sympathetic nervous system dysfunction. 106 As a result, it remains uncertain whether the heightened high-frequency harmonics intensity observed in dementia patients, in contrast to healthy subjects, is primarily attributable to dementia or sympathetic nervous dysfunction.…”

“…High-intensity high-frequency harmonics are likely to be generated during periods of rest, such as during sleep, 87 , 92 or when the parasympathetic nervous system is stimulated. 80 Conversely, high-intensity low-frequency harmonics are more likely to emerge during active phases, like exercise 87 and Tai Chi. 73 These findings align with prior research.…”