Objective evaluation of radial pulse signal

Abstract

Radial pulse signal analysis is an extensively explored diagnostic tool in traditional Indian as well as Chinese school of medicine. Objective examination of radial pulse signal and effect on its temporal domain characteristics features, as a result of activities conducted on healthy individuals have been evaluated.Radial pulse analysis, using pulse peak-peak variability-basis, on lines similar to heart rate variability, has been performed. Analysis of radial pulse signal for extracting respiration, thermoregulation and auditory perception related rhythms, prominently visible in HRV spectrum, has been attempted and results compare well with those reported from HRV analysis. Effects of posture change on pulse signal, have also been examined.

Traditional Indian Medicine (TIM) based Humor Identification A recurrence based Approach

“…Changes in contour shape as well as intensity of the pressure pulse waveform are caused due to decreasing arterial/capillary diameters, decreasing pressure and are also contributed by the total distensibility of the arterial tree [14]. On lines similar to authors previous works [10,11,12], a capacitance based pulse sensing mechanism has been used for signal sensing ( Figure 1). An electret capacitive pick-up (typical CMA-4544PF-W available from DigiKey part no 102-1721-ND), and having a near flat frequency response up-to 20 kHz is used for sensing the radial pulse perturbations.…”

“…Conventionally TIM physicians solely rely on sense perception for Va, Pt and Kp identification and quantification. The present study, similar to earlier [10,11,12], attempts to identify signal processing based measures/ parameters for identifying Vt, Pt and Kp humors for achieving an objective outlook. This can help in the realisation of a low cost, non-invasive diagnostic tool as a value added aid for physicians.…”

“…and digitised using a 14-bit DAQ, USB-6009 from National Instruments. The above sensing mechanism and instrumentation has helped us validate results of heart rate variability (HRV) using pulse rate variability (PRV) techniques [10,12]. Logged pulse signals are hardthresholded to detect signal peaks.…”