Comparison of the Upper Lip Bite Test with Measurement of Thyromental Distance for Prediction of Difficult Intubations

Salimi, Alireza; Farzanegan, Behrooz; Rastegarpour, Ali; Kolahi, Ali‐Asghar

doi:10.1016/s1875-4597(08)60027-2

Cited by 48 publications

(42 citation statements)

References 17 publications

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“…The specificity of TMD in the present study was 97.4% which was similar to the studies conducted by Salimi A et al 12 (93.3%) and A K Gupta et al 13 (96.5%).…”

Section: Resultssupporting

confidence: 91%

Comparison of Upper Lip Bite Test With Modified Mallampati Test and Thyromental Distance for Predicting Difficulty in Endotracheal Intubation- A Prospective Study

Rao¹,

Ranganath²,

S³

et al. 2017

jemds

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BACKGROUNDThere are many tests to predict difficult intubation viz., Patil's measurement of Thyromental Distance, the Mallampati Test and the Wilson Scoring System, but these tests have been shown to have high false positive rates which detract their usefulness. 1,2 The aim of this study is to compare the sensitivity, specificity, positive predictive value and negative predictive value of Upper Lip Bite Test with Modified Mallampati Test and Thyromental Distance in predicting difficult intubation.

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“…The specificity of TMD in the present study was 97.4% which was similar to the studies conducted by Salimi A et al 12 (93.3%) and A K Gupta et al 13 (96.5%).…”

Section: Resultssupporting

confidence: 91%

Comparison of Upper Lip Bite Test With Modified Mallampati Test and Thyromental Distance for Predicting Difficulty in Endotracheal Intubation- A Prospective Study

Rao¹,

Ranganath²,

S³

et al. 2017

jemds

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show abstract

“…If TMD is shorter than 6 cm direct laryngoscopy usually cannot be performed. According to other authors, the distance is 6.5 or 7 cm 3,[10][11][12] . In this study, the cut-off was defined as 9.3 cm.…”

Section: Discussionmentioning

confidence: 92%

“…Similarly, patients with a severely receding mandible deserve more attention from the intubating anesthesiologist. This parameter is even more important when combined with other tests 6,11 . Temporomandibular joint movement is assessed by a simple test consisting of two parts, full mouth opening and subluxation, i.e.…”

Section: Discussionmentioning

confidence: 99%

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Can Difficult Intubation Be Easily and Rapidly Predicted?

Fritscherova

Adamus²,

Dostalova³

et al. 2011

Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub

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Aim. Failed endotracheal intubation and inadequate ventilation with subsequent insufficient oxygenation can result in serious complications potentially leading to permanent health damage. Difficult intubation may occur not only in patients with apparent pathologies in the orofacial region but also, unexpectedly, in those without abnormalities. This study aimed at finding anthropometric parameters that are easy to examine and that would aid in predicting difficult intubation.Method. A case-control study was undertaken. Based on defined criteria, 15 parameters were examined in patients with unanticipated difficult intubation. The parameters included a previous history of difficult intubation, pathologies associated with difficult intubation, clinical symptoms of airway pathology, the Mallampati score, upper lip bite test, receding mandible, and cervical spine and temporomandibular joint movement. Thyromental, hyomental and sternomental distances and inter-incisor gap were measured. The methods were precisely defined and the measurements were carried out by a trained anesthesiologist. Statistical analysis was performed on data from 74 patients with difficult intubation and 74 control patients with easy intubation.Results. Significant predictors of difficult intubation were inter-incisor gap (IIG), thyromental distance (TMD) and class 3 limited movement of the temporomandibular joint. The IIG and TMD cut-offs were set at 42 mm and 93 mm, respectively.Conclusion. The results will be used to confirm these predictors in an anesthesiology clinic along with the aid of the laryngoscopic findings to improve the prediction of unanticipated difficult intubation.

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“…Therefore, many studies focused on vertical facial measurements, such as thyromental distance (6)(7)(8)(9). Thyromental distance (TMD) is considered to be an indicator of mandibular space.…”

Section: Discussionmentioning

confidence: 99%

What can Anthropometric Measurements Tell us About Mallampati Classification?

Çolak¹,

Yılmaz²,

Memiş³

et al. 2012

Balkan Med J

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Objective: Mallampati scoring is the most common examination method for predicting possible intubation problems. The purpose of this study is to investigate the relationship of facial anthropometric measurements with the modified Mallampati score (MMS). Material and Methods:The study population consisted of 153 male and 170 female volunteers (mean ages, 48,9±16,9 and 44,1±15,4 years, respectively). All participants were subjected to Mallampati scoring and facial anthropometric measurements during pre-operative visit. Anthropometric measurements included inter-incisor gap, lower face height, thyrogonial length, thyromental distance and bigonial distance. The relationship of anthropometric measurements with the MMS was investigated by statistical analysis.Results: Bigonial distance showed a positive correlation with the MMS (r=0.857; p<0.001), whereas inter-incisor gap, lower face height, and thyromental distance showed negative correlations (r=-0.809, r=-0.738, and r=-0.762 respectively p<0.001 for all). ROC and AUC analysis showed that the BGD level had the highest significant AUC (p<0.001). Optimal cut-off point for BGD was >113 mm, and at this cut-off point, the sensitivity rate was 94.8% and the specificity rate was 95.9%. BGD was the best predictor for discriminating MMS 3-4. Conclusion:We suggest that facial measurements such as bigonial distance may be used as alternatives for Mallampati evaluation when the patient's condition is not suitable for Mallampati scoring.

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Comparison of the Upper Lip Bite Test with Measurement of Thyromental Distance for Prediction of Difficult Intubations

Cited by 48 publications

References 17 publications

Comparison of Upper Lip Bite Test With Modified Mallampati Test and Thyromental Distance for Predicting Difficulty in Endotracheal Intubation- A Prospective Study

Comparison of Upper Lip Bite Test With Modified Mallampati Test and Thyromental Distance for Predicting Difficulty in Endotracheal Intubation- A Prospective Study

Can Difficult Intubation Be Easily and Rapidly Predicted?

What can Anthropometric Measurements Tell us About Mallampati Classification?

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