TY - JOUR
T1 - Influence of surface anesthesia on the pressure pain threshold measured with different-sized probes
AU - Takahashi, Ken
AU - Taguchi, Toru
AU - Itoh, Kazunori
AU - Okada, Kaoru
AU - Kawakita, Kenji
AU - Mizumura, Kazue
N1 - Funding Information:
The authors are grateful to Nobuyuki Nishimura, Makoto Morisada, Keisaku Kimura, and Tomoko Koeda for their kind help in the experiments. This work was supported in part by a Health and Labor Sciences Research Grant from the Ministry of Health, Labor and Welfare (H14-Choju-29).
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005/12
Y1 - 2005/12
N2 - Transcutaneous pressure with pressure probes of arbitrary diameters have been commonly used for measuring the threshold and magnitude of muscle pain, yet this procedure lacks scientific validation. To examine the valid probe dimensions, we conducted physiological experiments using 34 human subjects. Pin-prick pain, pressure pain threshold (PPT) to pressure probes of various diameters, heat pain threshold, and electrical pain threshold of deep tissues were measured before and after application of surface lidocaine anesthesia to the skin surface over the brachioradial muscle in a double-blinded manner. The anesthesia neither affected PPT with larger probes (diameters: 1.6 and 15 mm) nor increased electric pain threshold of deep structures, whereas it diminished pain count in pin-prick test and PPT with a 1.0 mm diameter probe, suggesting that mechanical pain thresholds measured with 1.6 and 15 mm probes reflect the pain threshold of deep tissues, possibly muscle. Pain thresholds to heat did not change after application of the anesthesia. These results suggest that larger pressure probes can give a better estimation of muscular pain threshold.
AB - Transcutaneous pressure with pressure probes of arbitrary diameters have been commonly used for measuring the threshold and magnitude of muscle pain, yet this procedure lacks scientific validation. To examine the valid probe dimensions, we conducted physiological experiments using 34 human subjects. Pin-prick pain, pressure pain threshold (PPT) to pressure probes of various diameters, heat pain threshold, and electrical pain threshold of deep tissues were measured before and after application of surface lidocaine anesthesia to the skin surface over the brachioradial muscle in a double-blinded manner. The anesthesia neither affected PPT with larger probes (diameters: 1.6 and 15 mm) nor increased electric pain threshold of deep structures, whereas it diminished pain count in pin-prick test and PPT with a 1.0 mm diameter probe, suggesting that mechanical pain thresholds measured with 1.6 and 15 mm probes reflect the pain threshold of deep tissues, possibly muscle. Pain thresholds to heat did not change after application of the anesthesia. These results suggest that larger pressure probes can give a better estimation of muscular pain threshold.
KW - Cutaneous pain
KW - Mechanical pain
KW - Muscle pain
KW - Pressure pain test
KW - Transcutaneous pressure
KW - Transdermal lidocaine
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U2 - 10.1111/j.1600-0765.2005.00794.x
DO - 10.1111/j.1600-0765.2005.00794.x
M3 - Article
C2 - 16503582
AN - SCOPUS:33644612365
VL - 22
SP - 299
EP - 305
JO - Somatosensory Research
JF - Somatosensory Research
SN - 0899-0220
IS - 4
ER -