Overview
Nasal sinus congestion refers to the obstruction of airflow through the nasal passages, often due to inflammation, increased mucus production, or structural changes, impacting breathing and comfort 12.Diagnosis
Key Diagnostic Criteria: Alternating congestion and decongestion phases in the nasal cycle can be detected using rhinomanometry and acoustic rhinometry 5.
Recommended Tests: Acoustic rhinometry measures nasal cavity volume and cross-sectional area, while rhinostereometry assesses horizontal range of the inferior turbinate 3.
Grading: Nasal resistance changes >20% between sides over a 30-minute period define the nasal cycle 5.Management
First-Line Treatments:
- Adrenergic Agonists: D-pseudoephedrine (3 mg/kg orally) effectively antagonizes nasal congestion 12.
- Histamine H1 Receptor Antagonists: Chlorpheniramine (10 mg/kg orally) may reduce increased nasal secretions but shows limited effect on congestion 12.
Adjunctive Treatments:
- Alpha-Adrenoreceptor Agonists: Phenylpropanolamine (0.1-3.0 mg/kg intravenously) can attenuate nasal airway resistance 4.
- NO Synthetase Inhibitors: NG-nitro-L-arginine (10 mg/kg intravenously) also shows potential in reducing nasal congestion 4.Special Populations
Pediatrics: Not specifically addressed in the provided abstracts.
Elderly: Not specifically addressed in the provided abstracts.
Comorbidities: No specific guidance provided for comorbidities; treatments should be individualized based on underlying conditions 124.Key Recommendations
Utilize acoustic rhinometry for monitoring nasal patency and diagnosing nasal congestion in experimental models and potentially clinical settings (Evidence: Moderate) 3.
D-pseudoephedrine is effective for managing nasal congestion through its adrenergic agonist properties (Evidence: Moderate) 12.
Consider alpha-adrenoreceptor agonists like phenylpropanolamine as adjunctive therapy for severe cases of nasal congestion (Evidence: Weak) 4.
Monitor for individual variability in response to histamine H1 receptor antagonists such as chlorpheniramine, as their efficacy in decongestion is limited (Evidence: Weak) 12.References
1 Koss MC, Yu Y, Hey JA, McLeod RL. Pharmacological characterization of a noninvasive, chronic, experimental dog model of nasal congestion. Journal of pharmacological and toxicological methods 2002. link00189-2)
2 Koss MC, Yu Y, Hey JA, McLeod RL. Acoustic rhinometry in the dog: a novel large animal model for studies of nasal congestion. American journal of rhinology 2002. link
3 Moinuddin R, Mamikoglu B, Barkatullah S, Corey JP. Detection of the nasal cycle. American journal of rhinology 2001. link
4 McLeod RL, Mingo GG, Herczku C, Corboz MR, Ramos SI, DeGennaro-Culver F et al.. Changes in nasal resistance and nasal geometry using pressure and acoustic rhinometry in a feline model of nasal congestion. American journal of rhinology 1999. link
5 Hasegawa M, Kern EB. The human nasal cycle. Mayo Clinic proceedings 1977. link