The Effect of Different Positions on Determining the Modified Mallampati Class in Order to Predict the Difficulty of Ventilation with Mask, and the Laryngoscopy Grade and Difficult Intubation in Candidates for Surgery

Document Type : Original Article (s)

Authors

1 Department of Critical Care Nursing, School of Nursing and Midwifery, Sharekord University of Medical Sciences, Shahrekord, Iran

2 Assistant Professor, Department of Adults and Geriatric Nursing, School of Nursing and Midwifery, Sharekord University of Medical Sciences, Shahrekord, Iran

3 Associate Professor, Department of A Anesthesiology, School of Medicine, Sharekord University of Medical Sciences, Shahrekord, Iran

4 Instructor, Department of Operating Room, School of Nursing and Midwifery, Sharekord University of Medical Sciences, Shahrekord, Iran

5 Associate Professor, Department of Biostatistics, School of Health, Sharekord University of Medical Sciences, Shahrekord, Iran

Abstract

Background: Inadequate ventilation with mask and difficult intubation are the most common adverse respiratory outcomes in patient undergoing anesthesia .The aim of this study was to compare Mallampati test in different sitting positions in traditional approach and during phonation for predicting difficult laryngoscopy and intubation in candidates for surgery.Methods: In this diagnostic value study on 385 patients, in different positions of supine and sitting with and without abeslang, Mallampati test was examined by a blind person regarding the condition of the mallmpati, laryngoscopy grade, and the severity of intubation. The results of these four positions of mallampati were compared in predicting laryngoscopy grade and the severity of intubation.Findings: All mallampati test scenarios had acceptable diagnostic value (P < 0.001). The accuracy of the Mallampati test in supine position with open mouth was lower than in other cases, and in the both positions of sitting with abeslang and supine with open mouth, diagnostic values were not suitable for assessing difficult and comfortable mask ventilation (P > 0.050). Mallampati test accuracy in supine position with open mouth was less than other positions. However, with a low accuracy, this position had the highest sensitivity (100%). Positive predictive values of supine and sitting positions with abeslang were higher than other positions.Conclusion: According to the results of this study, the Malamapati test in the position of supine with abeslang was better in determining the severity of laryngoscopy and intubation.

Keywords

References

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Journal of Isfahan Medical School
Volume 37, Issue 534 - Serial Number 534
May and June 2019
Pages 798-805

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History

  • Receive Date: 01 June 2019
  • Revise Date: 01 November 2024
  • Accept Date: 06 April 2022

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