Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Gabory, L. de; Reville, Nicolas; Baux, Yannick; Boisson, Nicolas; Bordenave, Laurence

doi:10.1002/alr.22086

Cited by 31 publications

(13 citation statements)

References 47 publications

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“…Most of the flow went through the lower part of the olfactory cleft and middle meatus. These findings have been confirmed by others who found that nasal resistance and shear stress on the wall reached a peak in the region of the nasal valve (22) , and the values of nasal resistance measured by rhinomanometry were similar to those found using CFD (23) .…”

Section: Airflowsupporting

confidence: 86%

The clinical implications of computerised fluid dynamic modelling in rhinology

Leite¹,

Jain²,

Douglas³

2018

Rhin

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Background:The nose is a dynamic organ and is the first point of contact between inhaled air and mucosal surfaces. Within the nasal cavity, there are changes of air flow and pressure occurring during the respiratory cycle, as well as exchanges of heat and humidity, and important immune responses to inhaled antigens and allergens.Methodology: This review is a summary for rhinologists covering what is known about airflow within the nose and sinuses and the impact of pathology and treatments on the physical environment of the nasal cavity. The review will concentrate largely on the significant contribution that computational fluid dynamics has had on this field. Results:The complex anatomical structure of the nasal cavity provides an aerodynamic environment that guides the airflow throughout the nasal cavities. However, anatomical or inflammatory changes can modify the air flow, heat and humidity exchanges, with negative consequences on nasal physiology. Restoration of normal airflow is a key goal to achieve success in the treatment of nasal diseases. Conclusions:Computational fluid dynamics is a method of analysis originating from engineering which has been adapted for rhinology. Although still an expensive and laborious technique, it may become a viable diagnostic tool in the future for studying nasal physiology.

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Section: Airflowsupporting

confidence: 86%

The clinical implications of computerised fluid dynamic modelling in rhinology

Leite¹,

Jain²,

Douglas³

2018

Rhin

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“…Therefore, studies related to the nasal valve can be included in CFD analyses of the nasal cartilage. CFD showed that the nasal valve area accelerated the airflow owing to its resistance to airflow, 103 , 104 and the pressure calculated by the computer was similar to the clinical pressure measurement. 105 Changes in the cartilage, such as the collapse of the nasal cartilage and displacement of the nasal septum, can affect the nasal valve area, 106 – 109 which would influence the patterns of airflow.…”

Section: Computational Simulation Technology In Clinical Research Of mentioning

confidence: 53%

Computational technology for nasal cartilage-related clinical research and application

Shi

Huang

2020

Int J Oral Sci

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Surgeons need to understand the effects of the nasal cartilage on facial morphology, the function of both soft tissues and hard tissues and nasal function when performing nasal surgery. In nasal cartilage-related surgery, the main goals for clinical research should include clarification of surgical goals, rationalization of surgical methods, precision and personalization of surgical design and preparation and improved convenience of doctor-patient communication. Computational technology has become an effective way to achieve these goals. Advances in three-dimensional (3D) imaging technology will promote nasal cartilage-related applications, including research on computational modelling technology, computational simulation technology, virtual surgery planning and 3D printing technology. These technologies are destined to revolutionize nasal surgery further. In this review, we summarize the advantages, latest findings and application progress of various computational technologies used in clinical nasal cartilage-related work and research. The application prospects of each technique are also discussed.

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“…Computational fluid dynamics studies demonstrate that all nasal regions are reached when using a head tilt position of 45 °C forward for NL, 17 especially with large-volume irrigations, 18 suggesting good mechanical efficiency of NL in washing the nose.…”

Section: What Are the Potential Benefits Of Nl To Covid-19 Patients?mentioning

confidence: 98%

Safety and Impact of Nasal Lavages During Viral Infections Such as SARS-CoV-2

et al. 2020

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Much has been stated about the potential risks of nasal lavages (NL) during the coronavirus disease 2019 (COVID-19) pandemic for COVID-19 patients and surrounding people. Several otolaryngological societies recommended to limit NL, supposing it may be associated with viral spread to lower airway. 1 On the contrary, recent studies suggested that NL may be beneficial in upper viral respiratory infectious diseases. In order to take stock of this issue, we conducted a short literature review to address 4 main questions: 1 COVID-19 Task Force of the Young-Otolaryngologists of the International Federations of Otorhinolaryngological Societies (YO

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Numerical simulation of two consecutive nasal respiratory cycles: toward a better understanding of nasal physiology

Abstract: CFD is more efficient and reliable when the entire respiratory cycle is simulated and repeated to avoid losing information.

Cited by 31 publications

References 47 publications

The clinical implications of computerised fluid dynamic modelling in rhinology

The clinical implications of computerised fluid dynamic modelling in rhinology

Computational technology for nasal cartilage-related clinical research and application

Safety and Impact of Nasal Lavages During Viral Infections Such as SARS-CoV-2

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