New Method for the Quantitative Assessment of Sensory Disturbances in Cervical Myelopathy: Application for Neurological Level Diagnosis

Inoue, Takeshi; Soshi, Shigeru; Kubota, Makoto; Marumo, Keishi

doi:10.22603/ssrr.2019-0076

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…Inoue et al reported that there was no correlation between the CPT measured with the PainVision TM system and the VAS score in cervical myelopathy patients (n = 158) or healthy volunteers (n = 100). However, the CPT showed significant associations with other variables, including the Japanese Orthopaedic Association (JOA) score, the JOA cervical myelopathy evaluation questionnaire (JOAMEQ), and the quality of life [32]. Kim et al reported that although there was a significant correlation between the QPD and MPQ, there was no correlation between the QPD and VAS (Spearman rank correlation coefficients = 0.240, p = 0.248) [31].…”

Section: Validity Of Electrical Parameters As Quantitative Diagnostic...mentioning

confidence: 99%

A Quantitative Measure of Pain with Current Perception Threshold, Pain Equivalent Current, and Quantified Pain Degree: A Retrospective Study

Lee,

Kim,

Lee

et al. 2023

JCM

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Background: As a subjective sensation, pain is difficult to evaluate objectively. The assessment of pain degree is largely dependent on subjective methods such as the numeric rating scale (NRS). The PainVisionTM system has recently been introduced as an objective pain degree measurement tool. The purpose of this study was to analyze correlations between the NRS and the current perception threshold (CPT), pain equivalent current (PEC), and quantified pain degree (QPD). Methods: Medical records of 398 subjects who visited the pain clinic in a university hospital from March 2017 to February 2019 were retrospectively reviewed. To evaluate the pain degree, NRS, CPT, PEC, and QPD were measured. Subjects were categorized into two groups: the Pain group (n = 355) and the No-pain group (n = 43). Results: The NRS showed a negative correlation with CPT (R = −0.10, p = 0.054) and a positive correlation with QPD (R = 0.13, p = 0.008). Among various diseases, only spinal disease patients showed a negative correlation between CPT and NRS (R = −0.22, p = 0.003). Additionally, there were significant differences in CPT and QPD between the Pain and No-pain groups (p = 0.005 and p = 0.002, respectively). Conclusions: CPT and QPD measured using the PainVisionTM system could be used to estimate pain intensity and the presence of pain. These parameters would be considered useful for predicting pain itself and its intensity.

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Section: Validity Of Electrical Parameters As Quantitative Diagnostic...mentioning

confidence: 99%

A Quantitative Measure of Pain with Current Perception Threshold, Pain Equivalent Current, and Quantified Pain Degree: A Retrospective Study

Lee,

Kim,

Lee

et al. 2023

JCM

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“…They experienced the VR presentations while lying at in the same position as the patients who underwent the surgical procedure. Their pain thresholds were measured using a PainVision® PS-2100 (Nipro Corporation, Osaka, Japan) to measure the level of electric current perceived as pain 10,11) . Measurements were conducted to determine: (1) the minimal perceived current (without VR); (2) the current while experiencing the natural landscape VR; and (3) the current while experiencing the video game VR.…”

Section: Vr Presentationsmentioning

confidence: 99%

Changes in the anxiolytic and analgesic effects of virtual reality presentations with different content during impacted mandibular third molar extraction.

Yamashita

Aijima

Danjo

2022

Preprint

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In many cases, surgical procedures are conducted under local anesthesia despite many patients feeling anxious or afraid of treatment. We have recently reported our use of virtual reality (VR) to alleviate the fear and anxiety experienced during oral surgical procedures conducted under local anesthesia. However, the effectiveness of VR in alleviating anxiety varies greatly between individuals, and it has been suggested that these differences in efficacy may depend on the viewer’s level of concentration. We therefore investigated whether the content of the VR presentation made any difference to its effect in alleviating anxiety, and whether it had any analgesic effect. The study subjects were 172 patients who required impacted mandibular third molar extraction under local anesthesia in our department. They experienced one of two different types of VR presentation and were asked to complete a questionnaire about any changes in their anxiety or fear during the procedure, including a visual analog scale (VAS) score. As an objective evaluation, changes in pain threshold during the VR presentation were investigated using PainVision®. Patients who did not experience a VR presentation (n = 48) reported intensified anxiety during the procedure, with an increased VAS score compared with that preoperatively. The VAS scores for patients who experienced a VR presentation, however, decreased significantly. For those patients who experienced a presentation showing a natural landscape (n = 51), the change in VAS score was −13.3 ± 28.7 mm, whereas for those who experienced a presentation showing a video game (n = 73) the change was −22.2 ± 32.1 mm, an even greater reduction. In a pain questionnaire completed by individuals who had experienced the video game presentations, approximately 70% reported that their pain had diminished. An objective evaluation of pain threshold using PainVision® also showed that the pain threshold of individuals increased by around 3% while experiencing the natural landscape VR presentation, but that while experiencing the video game presentation, it increased significantly by around 15% compared with baseline. These results show that the content of the presentation affected not only the rate of decrease in anxiety and fear, but also the pain threshold. This indicated that experiencing a presentation of a video game or another setting in which thought is required may not only alleviate anxiety during surgical procedures, but also diminish pain.

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“…This ability of the sinusoidal waveform to preferentially stimulate different nerve fibers has been incorporated in a technique called Current Perception Threshold (CPT), which consists on applying sinusoidal current waves by means of superficial electrical stimulation at 2KHz, 250 Hz, and 5 Hz and registering their associated sensory or perception thresholds 8,9 . CPT has been proven successful for the early diagnosis of diabetic neuropathies 13,14 and other types of pathologies such as cervical myelopathy or urinary tract dysfunction among others 10,15–17 . Painless normative CPT thresholds have been established recently in the literature for various cutaneous and/or mucosal sites of the body and the correlation of these thresholds with stimulation frequency, sex, age, and body fat has been demonstrated 18–20 …”

Section: Introductionmentioning

confidence: 99%

“…8,9 CPT has been proven successful for the early diagnosis of diabetic neuropathies 13,14 and other types of pathologies such as cervical myelopathy or urinary tract dysfunction among others. 10,[15][16][17] Painless normative CPT thresholds have been established recently in the literature for various cutaneous and/or mucosal sites of the body and the correlation of these thresholds with stimulation frequency, sex, age, and body fat has been demonstrated. [18][19][20] CPT is usually applied by means of transcutaneous round electrodes of 10 mm of diameter; however, other specific types of electrodes have been also proposed to achieve a selective stimulation of nociceptive fibers (thin Aδ, C fibers).…”

Section: Introductionmentioning

confidence: 99%

Evoked sensations with transcutaneous electrical stimulation with different frequencies, waveforms, and electrode configurations

Ojanguren

Keller

2022

Artificial Organs

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Background Current Perception Threshold (CPT) is a technique used for diagnostic purposes that applies sinusoidal currents transcutaneously at 5 Hz, 250 Hz, and 2KHz to preferentially excite C, Aδ, and Aβ afferent nerve fibers correspondingly. This fact may be interesting for evoking different electrotactile sensations for a wide variety of applications. Methods Sensations evoked by 5 Hz, 250 Hz, and 2KHz frequencies; sinusoidal, square, and 250 μs‐pulsed waveforms; and conventional and concentric electrode configurations were analyzed in 19 healthy volunteers. Stimuli were applied in the dorsum of the hand in a double‐blind manner and CPTs were defined based on participants' verbal feedback. After each stimulus participants filled in a form with sensation modality, irradiation, intensity, and emotion descriptors. Results The frequency showed a significant effect on the four domains of evoked sensations and the waveform showed a significant effect on the modality domain. For most waveform and electrode configuration combinations, 5 Hz evoked mostly a low‐intensity prickling sensation; 250 Hz mostly evoked an uncomfortable medium‐intensity tingling sensation; and 2KHz mostly evoked a low‐intensity tingling sensation. No thermal or noxious sensations were evoked. A significant interaction effect was only found between the frequency and the waveform factors. The electrode configuration did not show either a significant effect on the evoked sensations or an interaction effect with the frequency or waveform type. Conclusions Transcutaneous electrical stimulation may evoke different sensations at different frequencies due to the preferential activation of different fiber types. The results of these analysis could be used to enhance human‐machine/computer‐interaction systems based on electrotactile feedback.

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New Method for the Quantitative Assessment of Sensory Disturbances in Cervical Myelopathy: Application for Neurological Level Diagnosis

Cited by 6 publications

References 25 publications

A Quantitative Measure of Pain with Current Perception Threshold, Pain Equivalent Current, and Quantified Pain Degree: A Retrospective Study

A Quantitative Measure of Pain with Current Perception Threshold, Pain Equivalent Current, and Quantified Pain Degree: A Retrospective Study

Changes in the anxiolytic and analgesic effects of virtual reality presentations with different content during impacted mandibular third molar extraction.

Evoked sensations with transcutaneous electrical stimulation with different frequencies, waveforms, and electrode configurations

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