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Related Experiment Videos

[Nasal provocation test with hyperosmolar solutions: normal values].

P Cassano1, F Latorre

  • 1Istituto Policattedra di Otorinolaringoiatria, Università di Bari.

Bollettino Della Societa Italiana Di Biologia Sperimentale
|March 1, 1991
PubMed
Summary
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Hyperosmolar solutions reliably increase nasal secretions in healthy individuals, establishing a baseline for diagnosing vasomotor rhinitis. This nasal provocation test is valuable for assessing the secretory component of rhinopathy.

Area of Science:

  • Otolaryngology
  • Rhinology
  • Physiology

Context:

  • Hyperosmolar solutions are increasingly used for nasal provocation tests in diagnosing vasomotor rhinitis.
  • Establishing normative data in healthy subjects is crucial for accurate clinical interpretation.
  • Previous research has not fully characterized the dose-response relationship for nasal secretions.

Purpose:

  • To establish a norm for nasal secretion and resistance changes in healthy subjects using varying concentrations of hyperosmolar sodium chloride (NaCl) solutions.
  • To determine the concentration threshold at which statistically significant nasal secretion increases occur.
  • To evaluate the effect of hyperosmolar solutions on nasal resistance using rhinomanometry.

Summary:

  • Forty healthy subjects were challenged with increasing concentrations of NaCl solutions (0.9% to 9.0%).

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  • Nasal secretion significantly increased starting from 3.6% NaCl concentration (p < 0.001) in a dose-dependent manner.
  • No significant gender-based differences in secretion were observed. Nasal resistance changes were irregular and clinically insignificant.

    • Impact:

    • This study provides a normative baseline for nasal secretion response to hyperosmolar stimuli.
    • The findings support the utility of hyperosmolar nasal provocation tests for evaluating the secretory aspect of vasomotor rhinopathy.
    • The data can aid clinicians in differentiating pathological responses from normal physiological reactions.