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CLINICAL INVESTIGATION
Year : 2009  |  Volume : 53  |  Issue : 2  |  Page : 164-168

Evaluation of Truview evo2® Laryngoscope In Anticipated Difficult Intubation-A Comparison To Macintosh Laryngoscope


1 Chairman and Head, Department of Anaesthesiology and Critical Care, Jaipur Golden Hospital, New Delhi, India
2 Junior Consultant, Department of Anaesthesiology and Critical Care, Jaipur Golden Hospital, New Delhi, India
3 P.G.Student, Department of Anaesthesiology and Critical Care, Jaipur Golden Hospital, New Delhi, India

Correspondence Address:
Ishwar Singh
197 Dharamkunj Apartments, Plot No. 40, Sector 9, Rohini, New Delhi, 110085
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PMID: 20640117

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The aim of the study was to assess and compare laryngoscopic view of Truview evo2 laryngoscope with that of Macintosh laryngoscope in patients with one or more predictors of difficult intubation (PDI). Moreover ease of intubation with Truview evo2 in terms of absolute time requirement was also aimed at. Patients for elective surgery requiring endotracheal intubation were initially assessed for three PDI parameters - modified Mallampati test, thyro­mental distance& Atlanto-occipital (AO) joint extension. Patients with cumulative PDI scores of 2 to 5 (in a scale of 0 to 8) were evaluated for Cormack& Lehane (CL) grading by Macintosh blade after standard induction. Cases with CL grade of two or more were further evaluated by Truview evo2 laryngoscope and corresponding CL grades were assigned. Intubation attempted under Truview evo2 vision and time required for each successful tracheal intubation (i.e. tracheal intubation completed within one minute) was noted. Total fifty cases were studied. The CL grades assigned by Macintosh blade correlated well with the cumulative PDI scores assigned preoperatively, confirming there predictability. Truview evo2 improved laryngeal view in 92 % cases by one or more CL grade. Intubation with Truview evo2 was possible in 88% cases within stipulated time of one minute and mean time of 28.6 seconds with SD of 11.23 was reasonably quick. No significant complication like oro- pharyngeal trauma or extreme pressor response to laryngoscopy was noticed. To conclude, Truview evo2 proved to be a better tool than conventional laryngoscope in anticipated difficult situations.


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