Diagnostic Accuracy of Peak Nasal Inspiratory Flow and Rhinomanometry in Functional Rhinosurgery

Abstract

RMM and PNIF provide valuable information to support clinical decision making. However, with both methods, approximately 25% of symptomatic patients with functionally relevant nasal structural deformity were not detected. A negative test outcome of RMM or PNIF does not exclude a functionally relevant nasal stenosis.

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

“…PNIF has been widely used in studies aimed at the assessment of nasal airflow, especially in allergic rhinitis patients. The studies found in the literature address data on sensibility, diagnosis accuracy, reproducibility, and reference values of the instrument (8)(9)(10)(11)16,17,21,22) . Our sample showed higher prevalence of mouth-breathing patients in the age group of 6-10 years (Table 1), in agreement with findings of the literature (23,24) -even though some studies have not identified differences concerning age (7,19) .…”

“…Patients were briefly oriented about how to use the instrument; they were supposed to stand up, put on the face mask, covering the regions of the mouth and nose, breathe out and then breathe in at their utmost. We performed three measures and considered the highest value for the analysis (9)(10)(11)(12)16,17) . Data were analyzed using the SPSS statistical program, with significance level set at 5%.…”

“…The peak nasal inspiratory flow (PNIF) is another instrument that can aid in the detection of nasal obstruction causes (8)(9)(10)(11) , composed of a face mask attached to a graded flow meter that measures the nasal airflow at forced inspiration (12) . Both instruments are currently available in the market and can be easily acquired by Speech Therapists.…”

Pretreatment Prediction of the Outcomes of Intranasal Steroid Sprays in Cases with Inferior Turbinate Hypertrophy

“…The vascular characteristics of the submucosa provide the inferior concha with the feature of an erectile tissue, and the contracting or dilating venous sinusoids and arteriovenous anastomoses affect the nasal passage airflow (1,19,20). Nasal decongestants agents reduce concha volume and cause an increase in nasal airflow by causing vasoconstriction in these vascular elements (18).…”

Rinomanometria realizada por meio da fluidodinâmica computacional

“…A redução da resistência nasal após uso do vasoconstritor (Tabela 4) ocorreu em intensidade próxima às relatadas na literatura, a saber 43% (105) , 29% (100) e 34% (77) . Isto sugere que a vasoconstrição foi adequada e, portanto, o efeito do ciclo nasal e da posição corporal na resistência nasal foi evitado (78,79) .…”