Computerized rhinomanometry: A study of total nasal resistance normal values

Choi

Clin Exp Otorhinolaryngol

et al. 2012

ObjectivesRhinomanometry is a widely accepted method for objective assessment of nasal patency. However, few studies have reported the values of otherwise healthy population for nasal resistance in East Asians. The purpose of this study was to measure normal total nasal resistance (TNR) values in a large sample of Korean adults and to reveal parameters contributing to TNR values.MethodsSubjects were enrolled from a cohort of the Korean Genome and Epidemiology Study. They were evaluated by anthropometry, questionnaire, and active anterior rhinomanometry at transnasal pressures of 100 and 150 Pascal (Pa).ResultsThe study sample consisted of 2,538 healthy subjects (1,298 women and 1,240 men) aged 20 to 80 years. Normal reference TNR values were 0.19±0.08 Pa/cm3/second at 100 Pa and 0.22±0.09 Pa/cm3/second at 150 Pa. The TNR of women was significantly higher than that of men (P<0.0001). TNR decreased with increasing age in both genders (P<0.05). In women, lower body weight was related to increasing TNR. In men, current smokers had higher TNR than ex-smokers and never smokers.ConclusionThe results of the present study provide information regarding the values of otherwise healthy population of TNR and parameters associated with TNR in Korean adults.

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 80%

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A Prospective Population-based Study of Total Nasal Resistance in Korean Subjects

Choi

Clin Exp Otorhinolaryngol

et al. 2012

Laryngoscope Investig Oto

“…Somewhat surprisingly, stature, estimated in the present study as height, was not related to respiratory function which is parallel with findings of Zapletal and Chapulova in 2–19‐years old study group. In 108 20–45‐year old adults it has been reported that nasal resistance decreased when the height and weight increased except in individuals with weight of 85–95 kg . Our finding is parallel with studies using BMI in adult population and also with results on subjects with sleepapnea and BMI ≥ 30 kg/m 2, but contradictory to a study on sample of wide age range, from 16 to 82 years .…”

Section: Discussionsupporting

confidence: 64%

Perception and Respiratory Responses of the Upper Airway Mechanism to Added Resistance With Aging

Murtolahti¹,

Crouse

Pahkala

et al. 2017

ObjectivesTo assess breathing behaviors and perception of added respiratory loads in young compared to old individuals, and to determine whether aging affects the perception and response to changes in nasal airway resistance.Study designIn a clinical study, 40 young (11–20 years) and 40 older (59–82 years) subjects were evaluated during rest breathing and during the application of added airway resistance loads.MethodsThe pressure‐flow technique was used to measure airflow rate (mL/s) and oral‐nasal pressures (cmH2O) to calculate nasal resistance (cmH2O/L/s). To create calibrated resistance loads for the test conditions, we used a device modified from a precision iris diaphragm.ResultsDuring rest breathing airflow rate was significantly lower for the younger group compared to older group. Using the loading device, 11–20‐year‐olds detected increased resistance at the level of 2.26 cmH2O/L/s compared to 4.55 cmH2O/L/s in 59–82‐year‐olds. In contrast to the younger group, mean airflow rate was higher during expiration than during inspiration among 59–82‐year‐olds except at rest breathing.ConclusionsThe data revealed that the perception and respiratory response to increased airway resistance changed with aging. Younger subjects were more sensitive to changes within the airway. In both groups, subjects responded to increased airway resistance by decreasing airflow rate. However, expiratory phase became more active than inspiratory phase only in the older group.Level of EvidenceN/A

“…To address cephalometric changes in pediatrics among racial groups, Juliet et al concluded the lower age limit for testing rhinomanometry at five years old with the reference pressures with the most appropriate pressures at 75 and 100 Pascals [35]. In addition to age and ethnicity, the data showed differences in the measurement output for all three-measurement devices among gender, specifically nasal volume and mean cross-sectional area at the three measurement points in a congested or noncongested state [11,14,18,24,26].…”

Section: Ethnicity Gender and Agementioning

confidence: 99%

Validation of a Novel User Interface and Calculation Method For Determining Nasal Resistance And Patency

Davidson¹,

Harrell²

2022

Preprint

Background: The Davidson Airway Function &amp; Nasal Evaluation (DAFNE) Scoring System was developed as an intuitive and research-based scoring system that could be validated through beta testing and easily introduced to healthcare providers of several subspecialties who treat nasal obstruction and breathing disorders (MDs, PAs, PTs, APRNs, DDSs, and DCs). This scoring system was shown to increase the knowledge of airway function, nasal measurement parameters, and identification of proper treatment options for sleep and breathing disorders. The basis for the DAFNE score was developed from a systematic review of nasal measurement data. Methods: Electronic searches of PubMed, MEDLINE, EMBASE Cochrane Library, and Scopus of publications between 1988-2022 were used to identify studies validating nasal function measurement parameters to create the algorithm for the DAFNE Score™. The systematic review was accomplished using the 2020 ‘Preferred Reporting Items for Systematic Reviews’ (PRISMA) guidelines. Results: Twenty studies met the inclusion criteria for systematic review. Primary outcomes measurements demonstrated reliability, repeatability and validity of the DAFNE measurement technologies, data and output. Conclusions: The data analysis and systematic review uncovered a need and framework to develop and validate a web-based software algorithm for global access to improve the understanding of data interpretation of nasal measurements from three nasal measurement technologies. DAFNE Scoring should be used as an adjunct tool in routine clinical practice and research to further understand the technology data output and how to collaborate with other healthcare providers to improve patient outcomes.