The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery
Identifieur interne : 002807 ( Pmc/Curation ); précédent : 002806; suivant : 002808The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery
Auteurs : Anahita Hirmanpour [Iran] ; Mohammadreza Safavi [Iran] ; Azim Honarmand [Iran] ; Mitra Jabalameli [Iran] ; Golnaz Banisadr [Iran]Source :
- Advanced Biomedical Research [ 2277-9175 ] ; 2014.
Abstract
Preoperative assessment of anatomical landmarks andclinical factors help detect potentially difficult laryngoscopies. The aim of the present study was to compare the ability to predict difficult visualization of the larynx from thefollowing preoperative airway predictive indices, in isolation and combination: Neck circumference to thyromental distance (NC/TMD), neck circumference (NC), modified Mallampatitest (MMT), the ratio of height to thyromental distance (RHTMD), and the upper-lip-bite test (ULBT).
We collected data on657 consecutive patients scheduled for elective caesarean delivery under general anesthesia requiring endotracheal intubation and then evaluated all five factors before caesarean. An experienced anesthesiologist, not informed of the recorded preoperative airway evaluation, performed the laryngoscopy and grading (as per Cormack and Lehane's classification). Sensitivity, specificity, and positive and negative predictive values for each airway predictor in isolation and in combination were determined.
Difficult laryngoscopy (Grade 3 or 4) occurred in 53 (8.06%) patients. There were significant differences in thyromental distance (TMD), RHTMD, NC, and NC/TMD between difficult visualization of larynx and easy visualization of larynx patients (
The NC/TM Discomparable with NC, RHTMD, and ULBT for the prediction of difficult laryngoscopy in caes are an delivery.
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DOI: 10.4103/2277-9175.142045
PubMed: 25337530
PubMed Central: 4202503
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery</title><author><name sortKey="Hirmanpour, Anahita" sort="Hirmanpour, Anahita" uniqKey="Hirmanpour A" first="Anahita" last="Hirmanpour">Anahita Hirmanpour</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Safavi, Mohammadreza" sort="Safavi, Mohammadreza" uniqKey="Safavi M" first="Mohammadreza" last="Safavi">Mohammadreza Safavi</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Honarmand, Azim" sort="Honarmand, Azim" uniqKey="Honarmand A" first="Azim" last="Honarmand">Azim Honarmand</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Jabalameli, Mitra" sort="Jabalameli, Mitra" uniqKey="Jabalameli M" first="Mitra" last="Jabalameli">Mitra Jabalameli</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Banisadr, Golnaz" sort="Banisadr, Golnaz" uniqKey="Banisadr G" first="Golnaz" last="Banisadr">Golnaz Banisadr</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25337530</idno><idno type="pmc">4202503</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4202503</idno><idno type="RBID">PMC:4202503</idno><idno type="doi">10.4103/2277-9175.142045</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">002807</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">002807</idno><idno type="wicri:Area/Pmc/Curation">002807</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">002807</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery</title><author><name sortKey="Hirmanpour, Anahita" sort="Hirmanpour, Anahita" uniqKey="Hirmanpour A" first="Anahita" last="Hirmanpour">Anahita Hirmanpour</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Safavi, Mohammadreza" sort="Safavi, Mohammadreza" uniqKey="Safavi M" first="Mohammadreza" last="Safavi">Mohammadreza Safavi</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Honarmand, Azim" sort="Honarmand, Azim" uniqKey="Honarmand A" first="Azim" last="Honarmand">Azim Honarmand</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Jabalameli, Mitra" sort="Jabalameli, Mitra" uniqKey="Jabalameli M" first="Mitra" last="Jabalameli">Mitra Jabalameli</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author><author><name sortKey="Banisadr, Golnaz" sort="Banisadr, Golnaz" uniqKey="Banisadr G" first="Golnaz" last="Banisadr">Golnaz Banisadr</name><affiliation wicri:level="1"><nlm:aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</nlm:aff><country xml:lang="fr">Iran</country><wicri:regionArea>Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan</wicri:regionArea></affiliation></author></analytic><series><title level="j">Advanced Biomedical Research</title><idno type="ISSN">2277-9175</idno><idno type="eISSN">2277-9175</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec id="st1"><title>Background:</title><p>Preoperative assessment of anatomical landmarks andclinical factors help detect potentially difficult laryngoscopies. The aim of the present study was to compare the ability to predict difficult visualization of the larynx from thefollowing preoperative airway predictive indices, in isolation and combination: Neck circumference to thyromental distance (NC/TMD), neck circumference (NC), modified Mallampatitest (MMT), the ratio of height to thyromental distance (RHTMD), and the upper-lip-bite test (ULBT).</p></sec><sec id="st2"><title>Materials and Methods:</title><p>We collected data on657 consecutive patients scheduled for elective caesarean delivery under general anesthesia requiring endotracheal intubation and then evaluated all five factors before caesarean. An experienced anesthesiologist, not informed of the recorded preoperative airway evaluation, performed the laryngoscopy and grading (as per Cormack and Lehane's classification). Sensitivity, specificity, and positive and negative predictive values for each airway predictor in isolation and in combination were determined.</p></sec><sec id="st3"><title>Results:</title><p>Difficult laryngoscopy (Grade 3 or 4) occurred in 53 (8.06%) patients. There were significant differences in thyromental distance (TMD), RHTMD, NC, and NC/TMD between difficult visualization of larynx and easy visualization of larynx patients (<italic>P</italic> < 0.05). The main end-point area under curve (AUC) of the receiver-operating characteristic (ROC) was lower for MMT (AUC = 0.497; 95% Confidence Interval = CI,0.045-0.536) and ULBT (AUC = 0.500, 95% CI, 0.461-0.539) compared to RHTMD, NC, TMD, and NC/TMD score ([AUC = 0.627, 95% CI, 0.589-0.664], [AUC = 0.691; 95% CI, 0.654-0.726], [AUC = 0.606; 95% CI, 0.567-0.643], [AUC = 0.689;95% CI, 0.625-0.724], respectively), and the differences of six ROC curves were statistically significant (<italic>P</italic> < 0.05).</p></sec><sec id="st4"><title>Conclusion:</title><p>The NC/TM Discomparable with NC, RHTMD, and ULBT for the prediction of difficult laryngoscopy in caes are an delivery.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Hawkins, Jl" uniqKey="Hawkins J">JL Hawkins</name></author><author><name sortKey="Koonin, Lm" uniqKey="Koonin L">LM Koonin</name></author><author><name sortKey="Palmer, Sk" uniqKey="Palmer S">SK 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sortKey="Brock Utne, Jg" uniqKey="Brock Utne J">JG Brock-Utne</name></author><author><name sortKey="Vierra, M" uniqKey="Vierra M">M Vierra</name></author><author><name sortKey="Saidman, Lj" uniqKey="Saidman L">LJ Saidman</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Adv Biomed Res</journal-id><journal-id journal-id-type="iso-abbrev">Adv Biomed Res</journal-id><journal-id journal-id-type="publisher-id">ABR</journal-id><journal-title-group><journal-title>Advanced Biomedical Research</journal-title></journal-title-group><issn pub-type="ppub">2277-9175</issn><issn pub-type="epub">2277-9175</issn><publisher><publisher-name>Medknow Publications & Media Pvt Ltd</publisher-name><publisher-loc>India</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">25337530</article-id><article-id pub-id-type="pmc">4202503</article-id><article-id pub-id-type="publisher-id">ABR-3-200</article-id><article-id pub-id-type="doi">10.4103/2277-9175.142045</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>The predictive value of the ratio of neck circumference to thyromental distance in comparison with four predictive tests for difficult laryngoscopy in obstetric patients scheduled for caesarean delivery</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Hirmanpour</surname><given-names>Anahita</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Safavi</surname><given-names>Mohammadreza</given-names></name><xref ref-type="aff" rid="aff1"></xref><xref ref-type="corresp" rid="cor1"></xref></contrib><contrib contrib-type="author"><name><surname>Honarmand</surname><given-names>Azim</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Jabalameli</surname><given-names>Mitra</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Banisadr</surname><given-names>Golnaz</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib></contrib-group><aff id="aff1">Department of Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran</aff><author-notes><corresp id="cor1"><bold>Address for correspondence:</bold> Associate Prof. Mohammadreza Safavi, Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran. E-mail: <email xlink:href="safavi@med.mui.ac.ir">safavi@med.mui.ac.ir</email></corresp></author-notes><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>30</day><month>9</month><year>2014</year></pub-date><volume>3</volume><elocation-id>200</elocation-id><history><date date-type="received"><day>08</day><month>10</month><year>2012</year></date><date date-type="accepted"><day>25</day><month>12</month><year>2012</year></date></history><permissions><copyright-statement>Copyright: © 2014 Hirmanpour.</copyright-statement><copyright-year>2014</copyright-year><license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc-sa/3.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p></license></permissions><abstract><sec id="st1"><title>Background:</title><p>Preoperative assessment of anatomical landmarks andclinical factors help detect potentially difficult laryngoscopies. The aim of the present study was to compare the ability to predict difficult visualization of the larynx from thefollowing preoperative airway predictive indices, in isolation and combination: Neck circumference to thyromental distance (NC/TMD), neck circumference (NC), modified Mallampatitest (MMT), the ratio of height to thyromental distance (RHTMD), and the upper-lip-bite test (ULBT).</p></sec><sec id="st2"><title>Materials and Methods:</title><p>We collected data on657 consecutive patients scheduled for elective caesarean delivery under general anesthesia requiring endotracheal intubation and then evaluated all five factors before caesarean. An experienced anesthesiologist, not informed of the recorded preoperative airway evaluation, performed the laryngoscopy and grading (as per Cormack and Lehane's classification). Sensitivity, specificity, and positive and negative predictive values for each airway predictor in isolation and in combination were determined.</p></sec><sec id="st3"><title>Results:</title><p>Difficult laryngoscopy (Grade 3 or 4) occurred in 53 (8.06%) patients. There were significant differences in thyromental distance (TMD), RHTMD, NC, and NC/TMD between difficult visualization of larynx and easy visualization of larynx patients (<italic>P</italic> < 0.05). The main end-point area under curve (AUC) of the receiver-operating characteristic (ROC) was lower for MMT (AUC = 0.497; 95% Confidence Interval = CI,0.045-0.536) and ULBT (AUC = 0.500, 95% CI, 0.461-0.539) compared to RHTMD, NC, TMD, and NC/TMD score ([AUC = 0.627, 95% CI, 0.589-0.664], [AUC = 0.691; 95% CI, 0.654-0.726], [AUC = 0.606; 95% CI, 0.567-0.643], [AUC = 0.689;95% CI, 0.625-0.724], respectively), and the differences of six ROC curves were statistically significant (<italic>P</italic> < 0.05).</p></sec><sec id="st4"><title>Conclusion:</title><p>The NC/TM Discomparable with NC, RHTMD, and ULBT for the prediction of difficult laryngoscopy in caes are an delivery.</p></sec></abstract><kwd-group><kwd>Caesarean delivery</kwd><kwd>difficult laryngoscopy</kwd><kwd>modified Mallampati test</kwd><kwd>neck circumference</kwd><kwd>neck circumference to thyromental distance</kwd><kwd>ratio of height to thyromental distance</kwd><kwd>upper-lip-bite test</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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