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The nasal response to axillary pressure
Clinical Otolaryngology and Allied Sciences
|October 1, 1996
Summary
Axillary pressure causes nasal congestion by reducing nasal passage area on the stimulated side and increasing it on the opposite side. This reflex response is side-specific, affecting both nasal passages and blood pressure.
Area of Science:
- Otolaryngology
- Physiology
- Nasal Reflexes
Background:
- Axillary pressure is known to alter sympathetic tone.
- The specific impact of axillary pressure on nasal mucosa physiology is not well-documented.
Purpose of the Study:
- To investigate the nasal mucosal response to axillary pressure in healthy individuals.
- To determine if the nasal response to axillary pressure is side-specific.
Main Methods:
- Ten healthy individuals underwent 5-minute axillary pressure application using a crutch.
- Nasal cross-sectional area was measured using acoustic rhinometry; pulse and blood pressure were also monitored.
- The procedure was repeated with pressure applied to the contralateral side after a 30-minute rest period.
Main Results:
- A significant decrease in nasal cross-sectional area was observed on the side of pressure (median change = 0.09 cm2, P < 0.01).
- The contralateral nasal passage showed a significant increase in cross-sectional area (median change = 0.35 cm2, P = 0.01).
- Pulse and diastolic blood pressure increased, while systolic blood pressure remained unchanged, with no significant laterality in the blood pressure response.
Conclusions:
- Axillary pressure induces nasal congestion.
- The observed nasal and cardiovascular responses to axillary pressure suggest a side-specific reflex mechanism involving both afferent and efferent pathways.