Assessing Pain Intensity Using Photoplethysmography Signals in Chronic Myofascial Pain Syndrome
| Autor: | Hong-Hai Sie, Ying-Yu Chou, Kuan-Ting Lee, Jing-Jhao Ye, Ru-Nan Huang, Chiung-Cheng Chuang |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty Visual analogue scale medicine.medical_treatment 030204 cardiovascular system & hematology Myofascial pain syndrome 03 medical and health sciences 0302 clinical medicine 030202 anesthesiology Pain assessment Heart Rate Internal medicine Photoplethysmogram Heart rate medicine Heart rate variability Humans Photoplethysmography Myofascial Pain Syndromes Pain Measurement business.industry Middle Aged medicine.disease Intensity (physics) Anesthesiology and Pain Medicine Electrotherapy Cardiology Female sense organs business |
| Zdroj: | Pain practice : the official journal of World Institute of Pain. 18(3) |
| ISSN: | 1533-2500 |
| Popis: | Background Efficacy of pain assessment is the basis for effective therapy. Clinically, assessing pain is by subjective scale, but these methods have some shortcomings. Therefore, studies have been conducted on assessment of pain using physiological signals. Photoplethysmography (PPG) signals provide much information about the cardiovascular system. PPG-derived parameters (PPG parameters) reflect nociceptive stimulation, and obtain an approximation of the R-R interval from the PPG period. The aim of this study was to evaluate PPG signals for assessment of pain intensity in chronic myofascial pain syndrome (MPS) patients. Methods This study recruited 37 patients with chronic MPS; all of them were treated with electrotherapy and thermotherapy. The difference between pre- and post-therapy PPG parameters, and the correlation between pulse rate variability (PRV) and heart rate variability (HRV) were determined. We also obtained patients' pain intensity scores by visual analog scale, visual rating scale, and Wong-Banker face pain rating scale. Results Photoplethysmography and PRV/HRV parameters showed significant differences between pre- and post-treatment. The variation trend of PRV was similar with HRV in heart rate, R-R interval, low frequency, high frequency, and LF/HF; in addition, a high correlation between the parameters was observed either in pre- or post-therapy. PPG parameters indicated increased sympathetic tone. Conclusion The results of the study indicated that PRV substituted for HRV in assessment of pain intensity in chronic MPS reflected parasympathetic nervous tone increase, and PPG parameters might reflect stress stimulation on skin. |
| Databáze: | OpenAIRE |
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