A reprodutibilidade do espelho de Glatzel modificado na aferição da permeabilidade nasal

Abstract

The Glatzel Mirror (GM) is used to evaluate nasal patency.Validation studies are not available in the literature. This paper aims to verify the GM test reproducibility and the correlation between the intra-subject condensation area and nasal patency subjective perception. Methods: This is a prospective study. 25 subjects were evaluated with the GM for five consecutive minutes, every half an hour for 4 hours; every day, beginning in the early afternoon, every Thursday for five consecutive weeks. A visual analogue scale was used to evaluate nasal patency perception in all periods. Results: The total correlation coefficient (right + left areas) found between the condensation area and the subjective perception was r = 0.04 (p = 0.37). On the left side it was r = 0.08 (p = 0.09) and on the right side r = 0.05 (p = 0.28). The mean unilateral variation coefficient was less than 15% and the total was less than 12%, regardless of the time period interval between test and re-test. Conclusion: We did not observe any significant correlation between the subjective perception of breathing and the condensation area. Unilateral variability was higher than the total (right + left area) and the test variability was the same between the different time periods of measurements.

Effects of Age and Gender in Normal-Speaking Children on the Nasality Severity Index: An Objective Multiparametric Approach to Hypernasality

“…Additionally, attention must be paid to the influence of personal variables such as vital capacity [41,42] and language and dental anomalies [49] on this parameter. Considering the mirror-fogging test by Glatzel [15], environmental variables such as air moisture, temperature and tilting errors may affect the amount of condensation [50]. However, in this study, 71 of the 74 participants were located in the category ‘no condensation', which leads to the suspicion of no influence of these variables on the observations.…”

Avaliação do respirador oral: uso do espelho de Glatzel e do peak nasal inspiratory flow

“…This instrument has been used in some studies aiming to assess the nasal airflow (3)(4)(5)(6)(7)(18)(19)(20) . PNIF has been widely used in studies aimed at the assessment of nasal airflow, especially in allergic rhinitis patients.…”

Adult Tonsillectomy: Anatomical Differences Affect Postoperative Transient Hypernasality

“…A variable examined before and after surgery was the diameter of vapor (DV) on the mirror positioned under the patient's nose while articulating test sentences: the Glatzel mirror-fogging test [17]. We used nasal sentences [18] in Polish containing many nasal phonemes (see Appendix).…”

“…The condensation contour was measured along its greater axis from the zero point to the longest dimension on both sides of the nose. The sum of the right and left nasal fossa unilateral values was calculated for the final assessment [17]. …”