Fundamental Frequency in Excised Human Larynges after Anterior Glottic Web Formation of Various Extents

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorPINHEIRO, Thais Goncalves
dc.contributor.authorISHIKAWA, Camila Cristina
dc.contributor.authorIMAMURA, Rui
dc.contributor.authorFRIZZARINI, Ronaldo
dc.contributor.authorMONTAGNOLI, Arlindo Neto
dc.contributor.authorTSUJI, Domingos Hiroshi
dc.date.accessioned2019-05-30T13:36:57Z
dc.date.available2019-05-30T13:36:57Z
dc.date.issued2019
dc.description.abstractObjective To determine the effect of vocal fold anterior web formation on fundamental frequency with a cadaveric excised larynx model. Study Design Experimental study with excised human larynges. Setting Academic tertiary care hospital. Subjects and Methods Sixteen freshly excised human larynges were evaluated with high-speed videoendoscopy and digital kymography during artificially produced vibration. Each larynx was assessed in 4 conditions: preoperative controls and after 25%, 33%, and 50% decreases in the vibratory portion of the vocal folds. The following parameters were evaluated: fundamental frequency, periodicity, vocal fold vibration amplitude, phase symmetry, and glottic closure. Results The mean fundamental frequencies were 208.87, 250.20, 292.37, and 342.67 Hz for preoperative controls and 25%, 33%, and 50% reductions in vibratory length of the vocal folds, respectively. Fundamental frequency increased with each increase in anterior glottic web extent, and the difference among the groups was statistically significant in absolute values in hertz and in semitone elevation. The mathematical models for estimating postoperative fundamental frequency had a statistically significant coefficient. The vibration of the vocal folds remained periodic in all larynges before and after the procedures. Conclusion There was a significant and progressive increase in the fundamental frequency with each enlargement of anterior glottic web. Based on the control frequency, mathematical models could estimate the value of the fundamental frequency after the procedure.eng
dc.description.indexMEDLINEeng
dc.identifier.citationOTOLARYNGOLOGY-HEAD AND NECK SURGERY, v.160, n.4, p.672-678, 2019
dc.identifier.doi10.1177/0194599818813007
dc.identifier.eissn1097-6817
dc.identifier.issn0194-5998
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/31749
dc.language.isoeng
dc.publisherSAGE PUBLICATIONS LTDeng
dc.relation.ispartofOtolaryngology-Head and Neck Surgery
dc.rightsrestrictedAccesseng
dc.rights.holderCopyright SAGE PUBLICATIONS LTDeng
dc.subjectvoiceeng
dc.subjectvoice qualityeng
dc.subjectcadavereng
dc.subjectexperimental epidemiologyeng
dc.subjectpitch perceptioneng
dc.subjectkymographyeng
dc.subjectlaryngoscopyeng
dc.subject.otherpitch-raising surgeryeng
dc.subject.otherwendler glottoplastyeng
dc.subject.otherfemaleeng
dc.subject.othervoiceeng
dc.subject.wosOtorhinolaryngologyeng
dc.subject.wosSurgeryeng
dc.titleFundamental Frequency in Excised Human Larynges after Anterior Glottic Web Formation of Various Extentseng
dc.typearticleeng
dc.type.categoryoriginal articleeng
dc.type.versionpublishedVersioneng
dspace.entity.typePublication
hcfmusp.author.externalPINHEIRO, Thais Goncalves:Univ Sao Paulo, Sch Med, Dept Otorhinolaryngol, Sao Paulo, Brazil
hcfmusp.author.externalISHIKAWA, Camila Cristina:Univ Sao Paulo, Sch Med, Dept Otorhinolaryngol, Sao Paulo, Brazil
hcfmusp.author.externalMONTAGNOLI, Arlindo Neto:Univ Fed Sao Carlos, Dept Elect Engn, Sao Carlos, SP, Brazil
hcfmusp.citation.scopus4
hcfmusp.contributor.author-fmusphcRUI IMAMURA
hcfmusp.contributor.author-fmusphcRONALDO FRIZZARINI
hcfmusp.contributor.author-fmusphcDOMINGOS HIROSHI TSUJI
hcfmusp.description.beginpage672
hcfmusp.description.endpage678
hcfmusp.description.issue4
hcfmusp.description.volume160
hcfmusp.origemWOS
hcfmusp.origem.pubmed30477385
hcfmusp.origem.scopus2-s2.0-85061094777
hcfmusp.origem.wosWOS:000463053500015
hcfmusp.publisher.cityLONDONeng
hcfmusp.publisher.countryENGLANDeng
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