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2009, Number 1

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Rev Mex Anest 2009; 32 (1)

Evaluation, prediction and presence of a difficult intubation

Oriol-López SA, Hernández-Mendoza M, Hernández-Bernal CE, Álvarez-Flores AA

Language: Spanish
References: 27
Page: 41-49
PDF size: 235.22 Kb.


ABSTRACT

Generally, when evaluating upper tract in patients who were given general anesthesia, we expect that these tests present a high sensitiveness, allowing the tracheal instrumentation be performed with the fewest number of attempts and approaches. The predictive criteria of difficult intubation are classified by the scales of Mallampati II-IV, Bell House Doré II-III, Patil Aldreti II-III and interincisive distance; with a variation in both sensitiveness and specificity, according to the author of the research. This comparative study was carried out on 124 patients, both male and female, ranging from 18 to 60 years old, divided into two groups, I without predictive criteria, and II with predictive criteria. The data correlation by the laryngoscopy revealed: r = 0.80 by Mallampati. El Bell House Doré showed a sensitiveness of 0.76 and a specificity of 0.90; while the positive predictive value for interincisive distance was of 1, and the negative predictive value by Bell House Doré and Patil Aldreti was of 0.71. These values differ according to the evaluated anatomic structure; therefore, the prediction of a difficult intubation, as well as its presence, will depend on the used scale.


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