Gender Differences in Nasal Anatomy and Function Among Caucasians

Area of Science:

• Otorhinolaryngology
• Biomedical Engineering
• Computational Fluid Dynamics

Background:

• Nasal anatomical variations impact airflow and heat transfer.
• Sex-based differences in nasal physiology are not well understood.
• Investigating these differences can inform clinical practice.

Purpose of the Study:

• To investigate sex differences in nasal anatomy and physiology in Caucasians.
• To utilize computational fluid dynamics (CFD) for detailed analysis.
• To explore implications for sex-specific functional outcomes after nasal surgery.

Main Methods:

• Adult Caucasian subjects with normal nasal cone beam computed tomography (CBCT) and low Nasal Obstruction Symptom Evaluation scores were selected.
• Subject-specific nasal airway models were created from CBCT scans.
• CFD simulations were performed to analyze nasal surface area, volume, airflow, and heat transfer.

Main Results:

• Males exhibited significantly larger nasal surface area and volume compared to females.
• Females demonstrated higher bilateral nasal resistance and heat flux.
• Males had a larger surface area with mucosal heat flux exceeding 50 W/m².

Conclusions:

• Significant sex differences exist in normal Caucasian nasal anatomy and physiology.
• These anatomical and physiological variations may influence functional outcomes post-nasal surgery.
• Findings support the need for sex-specific considerations in nasal assessments and treatments.