Effects of Posture and Phonation on Mallampati Test and Its Correlation with Improved Cormach-Lehane Score
- VernacularTitle:不同体位发音时评估Mallampati分级结果与改良Cormach-Lehane分级相关性研究
- Author:
Lili CHENG
;
Yang LI
;
Wenhui ZHENG
;
Youjing DONG
- Publication Type:Journal Article
- Keywords:
posture;
phonation;
Mallampati score;
modified Cormach-Lehane score
- From:
Journal of China Medical University
2015;44(8):699-703
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effects of various head and neck postures and phonation on oropharyngeal view(Mallampati score),and ex-plore the correlation with laryngoscopic view tested by the improved Cormach-Lehane score(MCLS). Methods Following the local ethics commit-tee approval and patients′informed consent to anesthesia,124 patients were enrolled for this study. Prior to anesthesia,these patients were placed in supine position with various head and neck positions for oropharyngeal structures visualization and evaluation,including two head positions(neu-tral and full extension),two tongue positions(in and out),and with and without phonation,according to the modified Mallampati test score(MMT). Following induction,laryngoscopic view scores according to MCLS were recorded,then the sensitivity,specificity,positive and negative predictive value and accuracy of the various MMT scores were calculated. Correlation coefficient(r)of MMT scores with MCLS were also studied. Results Mallampati score was decreased in all the postures of head full extension,tongue outside and phonation,which makes oropharyngeal structures to be better visualized. There is no correlation between MMT scores and MCLS. The sensitivity,specificity,positive and negative predictive value and accu-racy of the various MMT scores is most satisfied in the posture of head full extension,tongue outside and phonation. Conclusion During airway as-sessment in supine position,the best posture is head full extension,tongue outside and phonation.
