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Updated: Jun 5, 2026

Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
Published on: December 8, 2010
[Changes in palmar skin blood flow, perfusion index and temperature during endoscopic thoracic sympathectomy]
Maiko Asano1, Motoshige Tanaka, Hitomi Kusaka
1Department of Anesthesiology, Osaka Medical College, Takatsuki 569-8686.
Background:
In endoscopic thoracic sympathectomy (ETS), it is required to perform accurate cautery of the sympathetic trunk. Monitoring of palmar skin blood flow and temperature has been used to assess the efficacy of ETS. This study investigated whether Perfusion Index (PI) is useful in assessing palmar skin blood flow and temperature in ETS.
Methods:
We studied 5 patients (1 man, 4 women) with palmar hyperhidrosis who had undergone a total of 10 ETS procedures. We measured skin blood flow, temperature and PI during ETS and evaluated the results.
Results:
Significant correlations were found between increases in skin blood flow and PI after ETS in cases with the palmar skin temperature just before ETS of below 35 degrees C.
Conclusions:
In these cases, we can substitute increases in PI with increases in skin blood flow during ETS.
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