Ostium resistance in acute maxillary and frontal sinusitis

Area of Science:

• Otolaryngology
• Respiratory Medicine
• Medical Physiology

Background:

• Sinus ostium obstruction is a key factor in sinusitis.
• Accurate assessment of sinus ostium function is crucial for effective sinusitis management.
• Current diagnostic methods may not fully capture dynamic sinus function during healing.

Purpose of the Study:

• To evaluate ostium function tests in normal sinuses.
• To monitor sinumanometry findings in patients with acute maxillary and frontal sinusitis during treatment.
• To establish objective criteria for assessing sinusitis healing and guiding interventions.

Main Methods:

• Performed ostium function tests on 18 normal maxillary and 6 normal frontal sinuses.
• Utilized sinumanometry to follow 57 acute maxillary and 16 acute frontal sinusitis patients until infection resolution.
• Measured respiratory pressure changes during forced nasal breathing.

Main Results:

• Following initial ostium obstruction, resistance decreased exponentially towards complete decongestion.
• Positive respiratory pressure fluctuations in the sinus during forced nasal breathing were observed as a sign of healing.
• The amplitude of these pressure fluctuations correlated with the healing process.

Conclusions:

• Sinumanometry demonstrates a predictable pattern of resistance decrease during sinusitis healing.
• Respiratory pressure changes during nasal breathing are a valuable, non-invasive indicator of sinusitis recovery.
• Documenting the amplitude of these fluctuations can aid in the clinical decision-making for sinus drainage procedures.