The Study of pH in Nasal Secretion in Normal and Chronic Rhinosinusitis

BACKGROUND AND OBJECTIVES: Nasal mucosal pH have a direct effect on the alteration of the physio-chemical characteristics of the nasal mucosa. Previous studies have reported the normal mucosal pH to be within the range of 5.3-7.0, mucosal pH with sinusitis to be within 6.8-7.6 and mucosal pH with rhinitis to be within 7.2-8.3. However, no consideration was paid to the conditions that influence the pH and there were no measured pH value by different methods. This study was therefore designed with the latest trend method in pH measurement with the purpose of evaluating pH in nasal secretion and creating an objective parameter for a beneficial manifestation of mucosa. MATERIALS AND METHODS: We measured the pH values from 30 normal control group (group 1), 30 patients with chronic sinusitis (group 2), and 30 patients with allergic rhinitis (group 3). Nasal secretion was obtained through filter paper absorption method and, using a micro pH electrode with pH meter, pH was measured in nasal secretion. RESULTS: pH in nasal secretion in this study was higher than the nasal mucosal pH from previously reported studies. pH values in nasal secretion showed a significant difference between three groups (group 1:7.86, group2:8.06, group 3:8.24) in this study (p<0.01). CONCLUSION: The measurement of pH in nasal secretion seems to be a useful parameter for monitoring and assessing the state of nasal mucosa. And we recommend this study as a method for obtaining an objective parameter for pH measurement in nasal cavity.

An Airway Tube for Minimizing Nasal Obstruction Following Intranasal Packing

BACKGROUND AND OBJECTIVES: Nasal packing after nasal surgery is commonly practiced for various purposes including hemostasis, stabilization of nasal structure, and synechia prevention. However, the use of nasal packing has led to the development of uncomfortable symptoms such as nasal obstruction. In this study, therefore, we have devised a new method of nasal packing involving the use of an airway tube for reducing nasal obstruction and discomforts in association with post-surgical nasal obstruction. Materials and METHODS: An airway tube was made by cutting the distal end of a 1cc syringe. It was inserted between the nasal septum and the packing material. Nasal cavities of 20 patients (Group 1) who underwent nasal surgery were packed using packing materials and the devised airway tubes following nasal surgery. We evaluated the symptoms of nasal obstruction after the postoperative nasal packing in this study group and compared them with those of the 20 patients (Group 2) who received packing with existing merocel nasal stents and 20 patients (Group 3) who were given packing with only merocel without airway tubes after nasal surgery. RESULT: In this study, nasal obstruction and discomforts in association with post-surgical nasal obstruction were significantly improved among patients given packing material and devised airway tubes (Group 1) comparative to other patient groups. CONCLUSION: Devised airway tube is useful in minimizing the symptoms of nasal obstruction and discomforts as well as in reducing surgical expense.