Evidence map›Paper›PMID 30488577›Full record

ArticleInternational forum of allergy & rhinology2019

Computational fluid dynamics after endoscopic endonasal skull base surgery-possible empty nose syndrome in the context of middle turbinate resection.

Guillermo Maza, Chengyu Li, Jillian P Krebs, Bradley A Otto, Alexander A Farag, Ricardo L Carrau, Kai Zhao

Abstract read
In one paragraph

Article in International forum of allergy & rhinology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Three-dimensional modeling and automatic analysis of the human nasal cavity and paranasal sinuses using the computational fluid dynamics method.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Guillermo MazaDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.ORCID 0000-0002-3931-3544
Chengyu LiDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.ORCID 0000-0002-8379-2423
Jillian P KrebsDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.
Bradley A OttoDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.
Alexander A FaragDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.
Ricardo L CarrauDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.
Kai ZhaoDepartment of Otolaryngology-Head & Neck Surgery, The Ohio State University, Columbus, OH.

Funding

Objective evaluation of conductive olfactory losses & nasal obstruction symptomsR01DC013626 · NIDCD · OHIO STATE UNIVERSITY · PI ZHAO, KAI · 2015 to 2018
$1.6M
NIDCD NIH HHS R01 DC013626
6 · The paper itself

Abstract

backgroundEmpty nose syndrome (ENS) is a rare and debilitating disease with a controversial definition, etiology, and treatment. One puzzling fact is that patients who undergo an endoscopic endonasal approach (EEA) often have resection of multiple anatomic structures, yet seldom develop ENS. In this pilot study, we analyzed and compared the computational fluid dynamics (CFD) and symptoms among post-EEA patients, ENS patients, and healthy subjects.

methodsComputed tomography scans of 4 post-EEA patients were collected and analyzed using CFD techniques. Two patients had significant ENS symptoms based on results of the Empty Nose Syndrome 6-item Questionnaire (score >11), whereas the other 2 were asymptomatic. As a reference, their results were compared with previously published CFD results of 27 non-EEA ENS patients and 42 healthy controls.

resultsPost-EEA patients with ENS symptoms had a similar nasal airflow pattern as non-EEA ENS patients. This pattern differed significantly from that of EEA patients without ENS symptoms and healthy controls. Overall, groups with ENS symptoms exhibited airflow dominant in the middle meatus region and a significantly lower percentage of airflow in the inferior turbinate region (EEA with ENS, 17.74 ± 4.00% vs EEA without ENS, 51.25 ± 3.33% [t test, p < 0.02]; non-EEA ENS, 25.8 ± 17.6%; healthy subjects, 36.5 ± 15.9%) as well as lower peak wall shear stress (EEA with ENS, 0.30 ± 0.13 Pa vs EEA without ENS, 0.61 ± 0.03 Pa [p = 0.003]; non-EEA ENS, 0.58 ± 0.24 Pa; healthy subjects, 1.18 ± 0.81 Pa).

conclusionThese results suggest that turbinectomy and/or posterior septectomy may have a varying functional impact and that ENS symptoms go beyond anatomy and correlate with aerodynamic changes. The findings open the door for CFD as a potential objective diagnosis tool for ENS.

Indexed as

AdultComputational BiologyComputer SimulationEndoscopyFemaleHumansHydrodynamicsMagnetic Resonance ImagingMaleMiddle AgedNasal ObstructionNeurosurgical ProceduresNoseOlfaction DisordersPostoperative ComplicationsSkull Basecomputational fluid dynamicsempty nose syndromeendoscopic skull base surgerynasal airflow dynamicspostoperative

Identifiers

PMID30488577
PMCPMC6358472

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.