Evidence map›Paper›PMID 24449655›Full record

ArticleInternational forum of allergy & rhinology2014

Conductive olfactory losses in chronic rhinosinusitis? A computational fluid dynamics study of 29 patients.

Kai Zhao, Jianbo Jiang, Edmund A Pribitkin, Pamela Dalton, David Rosen, Brian Lyman, Karen K Yee, Nancy E Rawson, Beverly J Cowart

Abstract read
In one paragraph

Article in International forum of allergy & rhinology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.1field-weighted citation impact, top 28% of its field
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

20 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. [Analysis of influencing factors on secondary olfactory dysfunction in different types of chronic sinusitis].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2025
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  12. Diseases of the nasal cavity.Handbook of clinical neurology · 2019
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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

9 authors at 2 institutions in 1 country.

Kai ZhaoMonell Chemical Senses Center, Philadelphia, PA; Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA.
Jianbo Jiang
Edmund A Pribitkin
Pamela Dalton
David Rosen
Brian Lyman
Karen K Yee
Nancy E Rawson
Beverly J Cowart
Monell Chemical Senses Center · USThomas Jefferson University · US

Funding

Sensory/Medical CoreP50DC006760 · NIDCD · MONELL CHEMICAL SENSES CENTER · PI BEAUCHAMP, GARY K · 2004 to 2009
$8.6M
Nasal airflow and odorant transport: a prerequisite for normal olfactionR03DC008187 · NIDCD · MONELL CHEMICAL SENSES CENTER · PI ZHAO, KAI · 2007 to 2009
$211k
NIDCD NIH HHS P50 DC006760NIDCD NIH HHS R03 DC008187PHS HHS NIDCD P50 DC00006760PHS HHS NIH NIDCD 5R03DC008187
6 · The paper itself

Abstract

backgroundBesides sensorineural factors, conductive impediments likely contribute to olfactory losses in chronic rhinosinusitis (CRS) patients, yet no conclusive evidence exists. We aimed to examine possible conductive factors using computational fluid dynamics (CFD) models.

methodsA total of 29 CRS patients were assessed via odorant detection thresholds (ODTs), rhinomanometry (nasal resistance [NR]), acoustic rhinometry (minimum-cross-sectional area [MCA]) and computed tomography (CT) staging. CFD simulations of nasal airflow and odorant absorption to olfactory region were carried out based on individual CTs. Biopsies of olfactory epithelium (OE) were collected, cryosectioned, stained, and scored for erosion.

resultsSignificant correlations to ODTs were found for 3 variables: odor absorption in the olfactory region (r = -0.60, p < 0.01), MCA (r = -0.40, p < 0.05), and CT staging (r = 0.42, p < 0.05). However, significant findings were limited to ODTs of the highly soluble l-carvone. Multiple regression analysis revealed that these variables combined, with the addition of NR, can account for 65% of the total variance in ODTs. CT staging correlated significantly with OE erosion (r = 0.77, p < 0.01) and can replace the latter in the regression with comparable outcomes. Partial correlations suggest the contributions of both conductive and sensorineural variables are more prominent if adjusted for the effects of the other. Olfactory loss and inflammatory factors have strong bilateral involvement, whereas conductive factors are independent between sides. As validation, CFD-simulated NRs significantly correlated with rhinomanometrically assessed NRs (r = 0.60, p < 0.01).

conclusionBoth conductive and sensorineural mechanisms can contribute to olfactory losses in CRS. CFD modeling provides critical guidance in understanding the role of conductive impediments in olfactory dysfunction in CRS.

Indexed as

HydrodynamicsModels, BiologicalAdultBiopsyChronic DiseaseFemaleHumansMaleMiddle AgedOdorantsOlfactory MucosaRhinitisRhinomanometrySensory ThresholdsSinusitisYoung AdultCFDchronic rhinosinusitiscomputed tomographyinflammationnasal airflowneuroepitheliumolfactory disorders

Identifiers

PMID24449655
PMCPMC4144185
OpenAlexW1949556735

What OpenQuestion holds

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Registered trials

None linked

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.