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Arquivos Internacionais de Otorrinolaringologia 2011; 15(02): 156-162
DOI: 10.1590/S1809-48722011000200006
Original Article
Thieme Publicações Ltda Rio de Janeiro, Brazil

Correlation Between the Peak Nasal Inspiratory Flow and the Visual Analogue Scale Before and After Using a Nasal Decongestant

Correlação Entre Peak Flow Nasal Inspiratório e Escala Visual Analógica Pré e Pós Uso de Vasoconstrictor Nasal
Rodrigo Ubiratan Franco Teixeira
*   Otorhinolaryngologist Doctor. Taking Master Degree in Public Health at FCMN/UNICAMP.
,
Carlos Eduardo Monteiro Zappelini
**   Resident Doctor of the Otorhinolgaryngology Department of Santa Casa de Misericórdia de Campinas.
,
Luana Gonçalves Oliveira
**   Resident Doctor of the Otorhinolgaryngology Department of Santa Casa de Misericórdia de Campinas.
,
Luciana Campoy Giro Basile
**   Resident Doctor of the Otorhinolgaryngology Department of Santa Casa de Misericórdia de Campinas.
,
Everardo Andrade da Costa
***   Doctor in Public Health. Cooperating Professor of the Post-Degree Program in Public Health and at FCM/UNICAMP's Otorhinolaryngology, Head and Neck Department.
› Author Affiliations
Further Information

Publication History

19 00 2010

30 December 2010

Publication Date:
12 February 2014 (online)

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Summary

Introduction: The measurement of the peak nasal inspiratory flow (PNIF) is easily and swiftly obtained, but hardly spread in Brazil though. On the other hand, the visual analogue scale (VAS) for nasal obstruction is a subjective measurement that can also be used.

Objective: To evaluate the correlation between PNIF and VAS for nasal obstruction before and after occurring a change in the nasal patency caused by the topic vasoconstriction. Study outline: Non-randomized clinical and experimental study.

Method: 60 volunteers, including patients, doctors, nurses and administrative assistants of the institution were submitted to PNIF and VAS examinations before and after the nasal vasoconstriction with oxymetazoline chloride at 0.05%.

Results: The average value found for pre-vasoconstriction VAS was 4.1 and, for post-vasoconstriction, it was 2. This represented a 44% range between the measurements. With regard to PNIF values, the average found when measuring the vasoconstriction was 151 l/min and 178 l/min after vasoconstriction, showing a 20% increase. At the pre-vasoconstrictor moment, increasing a point in average VAS value corresponds to a 3.8% decrease in average PNIF value. In the post-vasoconstriction, each increase of a point in average VAS value corresponds to a 4.5% decrease in average PNIF value.

Conclusion: There was an important correlation between the objective measurement of the nasal obstruction through PNIF and the subjective measurement provided by VAS before nasal vasoconstriction. A similar correlation could also be observed after using the decongestant.

Resumo

Introdução: A medida do pico de fluxo nasal inspiratório (PFNI) é obtida de forma simples e rápida, mas pouco difundida no Brasil. Por sua vez, a escala visual analógica (EVA) para obstrução nasal é uma medida subjetiva que também pode ser utilizada.

Objetivo: Avaliar a correlação entre o PFNI com a EVA para obstrução nasal, antes e após uma mudança da patência nasal, proporcionada pela vasoconstricção tópica. Desenho do estudo: estudo clínico e experimental não randomizado.

Método: 60 indivíduos voluntários incluindo pacientes, médicos, enfermeiros e auxiliares administrativos da instituição foram submetidos aos exames de PFNI e EVA antes e após a vasoconstrição nasal com cloridrato de oximetazolina a 0,05%.

Resultados: O valor médio encontrado para EVA pré vasoconstricção foi de 4,1 e 2 após a vasoconstrição. Isto representou uma variação de 44% entre as medidas. Em relação aos valores do PFNI, a média encontrada na mensuração pré vasoconstricção foi de 151 l/mim e de 178 l/mim após a vasoconstricção, apresentando um acréscimo de 20%. No momento pré vasoconstrictor, o aumento de um ponto no valor médio da EVA, corresponde a um decréscimo de 3,8% no valor médio do PFNI. No pós, cada incremento de um ponto no valor médio da EVA, corresponde a um decréscimo de 4,5% no valor médio de PFNI.

Conclusão: Houve uma correlação importante entre a medida objetiva da obstrução nasal através do PFNI com a mensuração subjetiva proporcionada pela EVA antes da vasoconstricção nasal. Semelhante correlação também pôde ser observada após o uso do vasoconstrictor.

Keywords

nasal obstruction - nasal cavity - nasal decongestants

Palavras-chave

obstrução nasal - cavidade nasal - descongestionantes nasais
 

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