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Frey's syndrome analysis with biosensor. A preliminary study

O Laccourreye1, D Bernard, O de Lacharriere

  • 1Laboratoire de Recherche Appliquée Voix, Biomatériaux, et Cancérologie ORL, Laënnec Hospital, University of Paris, France.

Archives of Otolaryngology--Head & Neck Surgery
|September 1, 1993
PubMed
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A new biosensoring method objectively quantifies Frey's syndrome (gustatory sweating) after parotid surgery. This noninvasive technique measures L-lactate on skin, offering real-time physiological monitoring.

Area of Science:

  • Biomedical Engineering
  • Otolaryngology
  • Physiology

Background:

  • Frey's syndrome, or gustatory sweating, is a common complication after total parotidectomy.
  • Current assessment methods for Frey's syndrome lack objective quantification and real-time monitoring capabilities.

Purpose of the Study:

  • To present and analyze a novel biosensoring method for objective quantification of Frey's syndrome.
  • To evaluate the utility of enzymatic electrodes and a skin extraction device for detecting L-lactate on intact skin.

Main Methods:

  • A criterion standard study involving 28 patients with Frey's syndrome and 9 controls.
  • Assessment using a clinical scale, Minor starch iodine test, and the L-lactate biosensoring method.
  • Prospective trial conducted at a tertiary care center for parotid gland pathology.

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Main Results:

  • The L-lactate biosensoring method allows for objective, continuous, real-time, and non-destructive analysis of skin L-lactate.
  • The method requires no chemical reagents and provides physiological dynamic monitoring of L-lactate production post-stimulus.
  • Results support the aberrant regeneration theory as the primary cause of Frey's syndrome.

Conclusions:

  • The developed biosensoring method is safe, reliable, noninvasive, objective, and highly sensitive.
  • This technique serves as a valuable investigative tool for clinicians and physiologists managing patients with post-parotidectomy gustatory sweating.
  • The findings contribute to a better understanding of Frey's syndrome pathogenesis.