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Yao L, Liu J, Yi X, Gu Q. The effect of nasopharyngeal obstruction on the olfactory bulb volume and olfactory sulcus depth in children : First author. Eur Arch Otorhinolaryngol 2024:10.1007/s00405-024-08945-x. [PMID: 39242410 DOI: 10.1007/s00405-024-08945-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 08/21/2024] [Indexed: 09/09/2024]
Abstract
PURPOSE Smell ability is associated with nasopharyngeal obstruction. Herein, we evaluated the effect of nasopharyngeal obstruction by adenoid hypertrophy on the olfactory bulb (OB) volume and olfactory sulcus (OS) depth in children. METHODS A total of 135 children who were candidates for brain magnetic resonance imagining scanning were enrolled in the study. The olfactory disorder-negative statements questionnaire was utilized to assess the patient-reported olfactory status. A validated sleep questionnaire was used to assess sleeping status. According to the adenoidal/nasopharyngeal (A/N) ratio, the children were divided into two groups: those with an A/N ratio ≤ 0.5 (n = 70) and those with an A/N ratio > 0.5 (n = 65). OB volume and OS depth measurements were performed on coronal T2-weighted images using planimetric manual contouring. The mean OB volumes and OS depths on the right and left sides were used for the evaluation. RESULTS The mean OB volume of the group with an A/N ratio > 0.5 was significantly lower than that of the group with an A/N ratio ≤ 0.5 (P = 0.003), while there was no difference in the mean OS depth between groups (P = 0.061). In those with an A/N ratio > 0.5, the mean OB volume in older children (aged 9-12 years) was significantly lower than that in younger children (aged 5-8 years) (P = 0.012). In terms of laterality, the OS depth on the right side was significantly larger than that on the left side in both groups (P = 0.039 and P = 0.001). In the group with an A/N ratio ≤ 0.5, the OB volume on the right side was also significantly larger than that on the left side (P = 0.040); however, no such difference was observed in the group with an A/N ratio > 0.5 (P = 0.630). No sex-based differences were evident for any variable. CONCLUSIONS Children with nasopharyngeal obstruction greater than 50% have a significantly smaller OB volume. Our results suggest that morphological alterations in OB may contribute to the pathogenic mechanism of olfactory dysfunction related to nasopharyngeal obstruction.
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Affiliation(s)
- Linyin Yao
- Department of Otolaryngology Head and Neck Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jia Liu
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Children's Hospital, Capital Institute of Pediatrics, Yabao Road 2, Beijing, 100020, China
| | - Xiaoli Yi
- Department of Radiology, The Affiliated Children's Hospital, Capital Institute of Pediatrics, Yabao Road 2, Beijing, 100020, China.
| | - Qinglong Gu
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Children's Hospital, Capital Institute of Pediatrics, Yabao Road 2, Beijing, 100020, China.
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Payandeh JE, Motamed M, Kirubalingam K, Chadha NK. Olfactory Dysfunction in Children: A Scoping Review. Otolaryngol Head Neck Surg 2023; 169:1399-1408. [PMID: 37449420 DOI: 10.1002/ohn.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/03/2023] [Accepted: 06/17/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE Olfactory disorders are well-studied in the adult population, however, there is a paucity of literature characterizing olfactory dysfunction in pediatric patients. The purpose of this scoping review was to identify known causes of olfactory loss in pediatric populations, clarify the extent of use and validity of smell tests, and summarize current therapies for olfactory loss. DATA SOURCES PubMed, Ovid MEDLINE, and Web of Science. REVIEW METHODS Databases were systematically searched in September 2020. Two independent reviewers conducted the title and abstract screen, followed by review of full-texts for inclusion based on preset inclusion and exclusion criteria. Extracted data included study type, age/age-range of participants, gender, radiological evidence of olfactory dysfunction, types and results of smell tests used, etiology of olfactory loss, and therapies employed for olfactory loss. RESULTS A total of 103 articles (n = 1654) were eligible for final data extraction. The University of Pennsylvania Smell Identification Test was used most frequently for smell testing (21% of studies). In total, 45 causes of olfactory dysfunction have been elucidated by this study: 22 congenital and 23 acquired. Few therapies were described, and all were specific to the etiology of olfactory loss. CONCLUSION Olfactory dysfunction has a wide range of etiologies in the pediatric population, and clinicians should have a diagnostic algorithm for how to identify a cause should they encounter it in practice. If no etiology can be identified, education around safety should be provided to both the patient and their caregivers.
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Affiliation(s)
| | - Mehras Motamed
- Faculty of Medicine, Queen's University, Kingston, Ontario, Canada
| | | | - Neil K Chadha
- Division of Pediatric Otolaryngology-Head and Neck Surgery, Department of Surgery, B.C. Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
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Zhang Y, Hu Z, Wang Y, Lou M, Ma R, Gong M, Dong J, Zheng G, Wang B. Numerical investigation of nanoparticle deposition in the olfactory region among pediatric nasal airways with adenoid hypertrophy. Comput Biol Med 2023; 167:107587. [PMID: 37890422 DOI: 10.1016/j.compbiomed.2023.107587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/28/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023]
Abstract
To understand inhaled nanoparticle transport and deposition characteristics in pediatric nasal airways with adenoid hypertrophy (AH), with a specific emphasis on the olfactory region, virtual nanoparticle inhalation studies were conducted on anatomically accurate child nasal airway models. The computational fluid-particle dynamics (CFPD) method was employed, and numerical simulations were performed to compare the airflow and nanoparticle deposition patterns between nasal airways with nasopharyngeal obstruction before adenoidectomy and healthy nasal airways after virtual adenoidectomy. The influence of different inhalation rates and exhalation phase on olfactory regional nanoparticle deposition features was systematically analyzed. We found that nasopharyngeal obstruction resulted in significant uneven airflow distribution in the nasal cavity. The deposited nanoparticles were concentrated in the middle meatus, septum, inferior meatus and nasal vestibule. The deposition efficiency (DE) in the olfactory region decreases with increasing nanoparticle size (1-10 nm) during inhalation. After adenoidectomy, the pediatric olfactory region DE increased significantly while nasopharynx DE dramatically decreased. When the inhalation rate decreased, the deposition pattern in the olfactory region significantly altered, exhibiting an initial rise followed by a subsequent decline, reaching peak deposition at 2 nm. During exhalation, the pediatric olfactory region DE was substantially lower than during inhalation, and the olfactory region DE in the pre-operative models were found to be significantly higher than that of the post-operative models. In conclusions, ventilation and particle deposition in the olfactory region were significantly improved in post-operative models. Inhalation rate and exhalation process can significantly affect nanoparticle deposition in the olfactory region.
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Affiliation(s)
- Ya Zhang
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Zhenzhen Hu
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China; School of Engineering, RMIT University, Bundoora, VIC, 3083, Australia
| | - Yusheng Wang
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Miao Lou
- Department of Otorhinolaryngology Head and Neck Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710068, China
| | - Ruiping Ma
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Minjie Gong
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Jingliang Dong
- Institute for Sustainable Industries & Liveable Cities, Victoria University, PO Box 14428, Melbourne, VIC, 8001, Australia; First Year College, Victoria University, Footscray Park Campus, Footscray, VIC, 3011, Australia.
| | - Guoxi Zheng
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China.
| | - Botao Wang
- Department of Otolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China.
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Lukasik H, Grote H, Bogaert S, Volkenstein S, Schlegtendal A, Eitner L, Beermann L, Maier C, Brinkmann F, van Ackeren K. Olfactory disorders in childhood: A comparative study of olfaction in children with adenoid hyperplasia versus a control group and the postoperative effects of adenoidectomy with respect to olfactory ability. Int J Pediatr Otorhinolaryngol 2023; 174:111735. [PMID: 37801831 DOI: 10.1016/j.ijporl.2023.111735] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/27/2023] [Accepted: 09/16/2023] [Indexed: 10/08/2023]
Abstract
PURPOSE Hyposmia in childhood is poorly characterized. The "U-Sniff Test", validated for children with anosmia, can be used to objectify olfactory impairment but has not been used to distinguish between hyposmia and normosmia. Therefore, we investigated children with enlarged adenoids with respect to hyposmia, its correlation with adenoid size, and the sensitivity of questionnaires to predict olfactory impairment. METHODS In a prospective comparison, olfaction was assessed by "U-Sniff Test" (score 0-12; <8 hyposmia) in 41 children (5-18 years) with adenoid hyperplasia and compared with 196 children without any respiratory affection (control) after exclusion of previous SARS-Cov2-infection from December 2020 to December 2021. ENT-related complaints were collected using a self-designed questionnaire. We were able to include 13 children in a follow-up examination to compare preoperative performance in the "U-Sniff Test" with postoperative outcome after adenoidectomy. STATISTICS chi-square-test (p < 0.05), odds-ratio, Spearman's rho, ROC-, cluster analysis. RESULTS Severe hyposmia was present in 36.6% of children with adenoid-hyperplasia compared to 3.1% of the control-group. Adenoid-children scored significantly more often between 8 and 10 points (58.5%) than the control (31.6%; p < 0.01). Adenoid size and olfactory performance correlate significantly (r: 0.83; CI -0.89 … -0.72). Hyposmia in the adenoid group is characterized predominately by loss of the odors banana, butter and rose. None of children with hyposmia or parents reported impaired olfactory performance. Postoperatively, olfactory function improved significantly in 85% of cases (p 0.01, SD ± 1.71, Δ3.54points). CONCLUSION Questionnaires are insufficient to detect hyposmia in this cohort. In contrast, the "U-Sniff Test" detects even reduced olfactory performance without reaching the cut-off value, which represents the majority of test results in the adenoid group. Therefore, we recommend the classification of moderate hyposmia (8-10 points) to be included for our study population.
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Affiliation(s)
- H Lukasik
- Department of Otorhinolaryngology, Head and Neck Surgery, Johannes Wesling Klinikum, Ruhr-University Bochum, Minden, Germany; Department of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth-Hospital, Ruhr-University Bochum, Bochum, Germany.
| | - H Grote
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - S Bogaert
- Department of Otorhinolaryngology, Head and Neck Surgery, St. Elisabeth-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - S Volkenstein
- Department of Otorhinolaryngology, Head and Neck Surgery, Johannes Wesling Klinikum, Ruhr-University Bochum, Minden, Germany
| | - A Schlegtendal
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - L Eitner
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - L Beermann
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - C Maier
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany
| | - F Brinkmann
- Department of Pediatrics, St. Josef Hospital, Ruhr-University Bochum, Bochum, Germany; Division of Pediatric Pulmonology and Allergology, University Children's Hospital, German Center for Lung Research (ARCN, DZL), Luebeck, Germany
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Hernandez AK, Fuchss P, Haehner A, Hummel T. Olfactory function testing before and after anesthesia. Sci Rep 2021; 11:23857. [PMID: 34903794 PMCID: PMC8668874 DOI: 10.1038/s41598-021-03400-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/02/2021] [Indexed: 11/08/2022] Open
Abstract
This study aimed to determine whether anesthesia would affect olfactory function. Patients who were admitted for surgical intervention that did not include the nasal cavity and paranasal sinuses were included in this prospective cohort study. Structured medical history was taken from the patients, including the following: age, sex, smoking history, alcohol intake, current medications, and sleep deficits prior to surgery. Before surgery, patients were asked for a self-rating of their olfactory function. Olfactory function was also measured using Sniffin' Sticks comprising measures of odor threshold, discrimination, and identification. The mean interval between olfactory tests was 6 days (range 3-12 days). Seventy-three patients were included in the study, 34 men and 39 women. Olfactory scores were consistent before and after surgery as indicated by correlative analyses (p < 0.05). Odor thresholds, discrimination, identification, and composite TDI scores did not change significantly, whereas odor identification scores increased (p = 0.011) after surgery. In conclusion, post-operative olfactory scores remained stable. However, identification scores exhibited a slight increase which can be attributed to a retest effect. Overall, the present results indicate that surgery outside of the nasal and paranasal sinus region performed in general anesthesia has no major effect on the sense of smell.
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Affiliation(s)
| | - Patrick Fuchss
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Antje Haehner
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - Thomas Hummel
- Smell & Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
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Calvo-Henriquez C, Mariño-Sánchez F, Lechien JR, Maldonado-Alvarado B, Maniaci A, Maza-Solano J, Martínez-Capoccioni G, Neves JC, Martin-Martin C. Radiofrequency ablation turbinoplasty improves the sense of smell in pediatric patients: A prospective study. Int J Pediatr Otorhinolaryngol 2021; 150:110935. [PMID: 34649156 DOI: 10.1016/j.ijporl.2021.110935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 08/25/2021] [Accepted: 10/04/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The olfactory sense is of paramount importance for the adequate development of a child. Olfactory loss in children might have different origins. One of the most common is conductive, when nasal obstruction prevents odorants from reaching the olfactory epithelium. Rhinitis and turbinate enlargement have been proven to diminish the sense of smell in pediatric patients. A common treatment for resistant rhinitis in these patients is turbinate radiofrequency ablation (TRA). However, despite an increasing research effort in this field, there are no studies instrumentally assessing olfaction in children undergoing turbinate surgery to date. This study was designed with the aim of assessing changes in olfaction through validated instrumental tools in pediatric patients undergoing TRA for the first time. METHODS A prospective uncontrolled intervention clinical trial design was conducted. Two cohorts of children ranging 4-15 years old were consecutively selected from a third level referral Hospital and subjected to the universal sniff test (U-Sniff), alcohol sniff test (AST), and sniffin sticks threshold test (SST) before and 1, 3 and 6 months after surgery. Cohort A consisted of children solely undergoing TRA. Cohort B consisted of children on whom adenoidectomy and TRA had been performed. Additionally, a cohort of Spanish healthy controls, paired by sex and age, were asked to perform the U-Sniff. RESULTS A total of 81 participants with a mean age of 10.31 ± 2.56 years were included. Fifty-three patients underwent TRA exclusively and 28 were subjected to associated adenoidectomy. Despite a tendency toward improvement in the U-sniff scores, there were no statistically significant differences after surgery. However, statistically significant differences were obtained for threshold tasks measured with SST and AST, revealing differences at 1, 3 and 6 months after surgery compared to preoperative scores. CONCLUSIONS In summary, this research demonstrated adequate levels in the sense of smell regarding identification tasks, but decreased olfactory threshold scores in pediatric patients suffering from TE. TRA, alone or with adenoidectomy, improved smell threshold scores, but had no significant effect on identification tasks.
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Affiliation(s)
- Christian Calvo-Henriquez
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Service of Otolaryngology, Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Franklin Mariño-Sánchez
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Rhinology and Skull Base Surgery Unit, Otorhinolaryngology Department, Ramon y Cajal University Hospital, Madrid, Spain
| | - Jerome R Lechien
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Service of Otolaryngology, Foch Hospital, University of Paris Saclay, Paris, France
| | - Byron Maldonado-Alvarado
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Service of Otolaryngology, Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonino Maniaci
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Department of Medical and Surgical Sciences and Advanced Technologies "GF Ingrassia", ENT Section, ENT Department of University of Catania, Catania, Italy
| | - Juan Maza-Solano
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Rhinology and Skull Base Surgery Unit, Otolaryngology Department, Hospital Virgen de la Macarena, Seville, Spain
| | - Gabriel Martínez-Capoccioni
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; Service of Otolaryngology, Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
| | - J Carlos Neves
- Rhinology Study Group of the Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France; MyFace Clinics and Academy, Lisbon, Portugal
| | - Carlos Martin-Martin
- Service of Otolaryngology, Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
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Fornazieri MA, Ebara LK, Araújo RGD, Lima JVF, Favareto FB, Pinna FR, Voegels RL, Doty RL. Adaptation of the Pediatric Smell Wheel TM to evaluate olfactory function in Brazilian children. Braz J Otorhinolaryngol 2021; 88 Suppl 5:S47-S51. [PMID: 34756795 PMCID: PMC9800946 DOI: 10.1016/j.bjorl.2021.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/29/2021] [Accepted: 08/11/2021] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Olfaction influences nutrition, safety, and the cognitive development of children. Presently there are few olfactory tests for children, and normative reference values are generally lacking. In this study, we validate the Pediatric Smell WheelTM (PSW) to evaluate olfactory function in Brazilian children. METHODS We modified and validated the PSW, a test developed in the United States, for administration in Brazil, and established normative data for Brazilian children. The validation process consisted of five phases. First, we identified odorants familiar to Brazilian children. Second, we established the test-retest reliability of the Brazilian PSW test that employed these odorants. Third, we compared the test scores of healthy children to those microsmic from adenoid hypertrophy. Fourth, we examined the test's ability to detect improvement in olfactory function before and after adenoidectomy. Finally, we determined a normative 10th percentile cut point for defining microsmia in a sample of 169 healthy Brazilian children between 5 and 12 years of age. RESULTS Eleven odors were identified for inclusion in the test. The test-retest reliability was modest (r = 0.54, p < 0.001), although likely attenuated based on the inclusion of only data from children with normal function. The test clearly differentiated the olfactory function of children with adenoid hypertrophy from that of healthy children and demonstrated the return of function after adenoidectomy. An overall score <7 was found useful in defining hyposmia, although additional age-related cut-points were also defined. CONCLUSION A Brazilian version of the PSW was developed and validated and found to be efficacious in detecting smell dysfunction in children ranging in age from 5 to 12 years. LEVEL OF EVIDENCE 1b (Diagnosis).
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Affiliation(s)
- Marco A. Fornazieri
- Universidade Estadual de Londrina (UEL), Departamento de Cirurgia Cliníca, Londrina, PR, Brazil,Pontifícia Universidade Católica do Paraná (PUC PR), Departamento de Medicina, Londrina, PR, Brazil,Universidade de São Paulo (USP), Departamento de Otorrinolaringolgia, São Paulo, SP, Brazil,University of Pennsylvania, Perelman School of Medicine, Smell and Test Center, Department of Otorhinolaryngology – Head and Neck Surgery, Pennsylvania, USA,Corresponding author.
| | - Lucas K. Ebara
- Universidade Estadual de Londrina (UEL), Departamento de Cirurgia Cliníca, Londrina, PR, Brazil
| | | | | | - Felipe B. Favareto
- Universidade Estadual de Londrina (UEL), Departamento de Cirurgia Cliníca, Londrina, PR, Brazil
| | - Fábio R. Pinna
- Universidade de São Paulo (USP), Departamento de Otorrinolaringolgia, São Paulo, SP, Brazil
| | - Richard L. Voegels
- Universidade de São Paulo (USP), Departamento de Otorrinolaringolgia, São Paulo, SP, Brazil
| | - Richard L. Doty
- University of Pennsylvania, Perelman School of Medicine, Smell and Test Center, Department of Otorhinolaryngology – Head and Neck Surgery, Pennsylvania, USA
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Gellrich J, Zickmüller C, Schriever VA. Assessment of Olfactory Function in Children and Adolescents: An Overview. Chem Senses 2021; 46:6291807. [PMID: 34237138 DOI: 10.1093/chemse/bjab027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Valid and reliable tools for assessing olfactory function are necessary for the diagnosis of olfactory dysfunction. Olfactory testing can be challenging in a pediatric population due to shorter attention span, linguistic development, and lower olfactory experience in this age group. The aim of this article is to present an overview about olfactory tests that are suitable for a pediatric population. Publications were included when reporting new developed methods of psychophysical olfactory testing in children or adaptation and applications of existing olfactory tests for a pediatric population. Olfactory tests for all 3 major aspects of olfactory function-olfactory threshold, odor discrimination, and odor identification-were included. Olfactory tests were evaluated regarding test validity, test reliability, normative data, and test availability. The current literature shows that several tests are available to assess olfactory function in children. Especially odor identification abilities in a pediatric population are well examined and understood. Tests for olfactory threshold and odor discrimination are less frequently used. In terms of the abovementioned evaluation criteria, only a few tests met all or 3 of these 4 criteria. Based on the current literature the following tests can be recommended for valid and reliable olfactory testing in children: "U-Sniff" odor identification test, the "Sniffin' Sticks" olfactory threshold test, pBOT-6 olfactory threshold and odor identification test, NIH-Toolbox, and Smell Wheel. Age has to be considered when evaluating olfactory function in children.
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Affiliation(s)
- Janine Gellrich
- Abteilung Neuropädiatrie Medizinische Fakultät Carl Gustav Carus, Technische Universität, Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.,Klinik und Poliklinik für Kinder- und Jugendmedizin, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Claudia Zickmüller
- Abteilung Neuropädiatrie Medizinische Fakultät Carl Gustav Carus, Technische Universität, Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Valentin A Schriever
- Abteilung Neuropädiatrie Medizinische Fakultät Carl Gustav Carus, Technische Universität, Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.,Center for Chronically Sick Children (Sozialpädiatrisches Zentrum, SPZ), Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.,Department of Pediatric Neurology, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
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