Sensitivity of palm print, modified mallampati score and 3-3-2 rule in prediction of difficult intubation

This study evaluated the performance of modified Mallampati score, 3-3-2 rule and palm print in prediction of difficult intubation. In a prospective descriptive study, data from 500 patients scheduled for elective surgery under general anesthesia were collected. An anesthesiologist evaluated the air...

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Bibliographic Details
Published in:	International journal of preventive medicine Vol. 4; no. 9; pp. 1063 - 1069
Main Authors:	Mahmoodpoor, Ata, Soleimanpour, Hassan, Nia, Kavous Shahsavari, Panahi, Jafar Rahimi, Afhami, Mohammadreza, Golzari, Samad Ej, Majani, Karim
Format:	Journal Article
Language:	English
Published:	Iran Medknow Publications & Media Pvt. Ltd 01-09-2013 Medknow Publications & Media Pvt Ltd Wolters Kluwer Medknow Publications
Subjects:	3-3-2 rule Airway management Anesthesia Anesthesiology Body mass Body mass index Demographics Diabetes Difficult intubation Emergency medical care Fingers & toes Intubation Medical instruments modified Mallampati score Mouth Neck Original Ostomy Palm palm print Patients Respiratory tract Sensitivity Studies 3-3-2 rule modified Mallampati score Difficult intubation palm print
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Summary:	This study evaluated the performance of modified Mallampati score, 3-3-2 rule and palm print in prediction of difficult intubation. In a prospective descriptive study, data from 500 patients scheduled for elective surgery under general anesthesia were collected. An anesthesiologist evaluated the airway using mentioned tests and another anesthesiologist evaluated difficult intubation. Laryngoscopic views were determined by Cormack and Lehane score. Grades 3 and 4 were defined as difficult intubation. Sensitivity, specificity, positive predictive value, negative predictive value and Youden index were determined for all tests. Difficult intubation was reported in 8.9% of the patients. There was a significant correlation between body mass index and difficult intubation (P : 0.004); however, other demographic characteristics didn't have a significant correlation with difficult intubation. Among three tests, palm print was of highest specificity (96.46%) and modified Mallampati of highest sensitivity (98.40%). In a combination of the tests, the highest specificity, sensitivity and Youden index were observed when using all three tests together. Palm print has a high specificity for prediction of difficult intubation, but the best way for prediction of difficult intubation is using all three tests together.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2008-7802 2008-8213