Comparison of Upper Lip Bite Test, Ratio of Height to Thyromental Distance, and Maxillopharyngeal Angle to Predict Difficult Laryngoscopy
Journal Title: INTERNATIONAL JOURNAL OF SCIENTIFIC STUDY - Year 2018, Vol 5, Issue 11
Abstract
Introduction: The incidence of “difficult” intubation is approximately 1–4%, whereas the most dreadful incidence of “cannot ventilate by mask, cannot intubate” is around 0.0001–0.02%. Materials and Methods: A total of 556 patients aged between 18 and 65 years of ASA I and II scheduled for elective general anesthesia with intubation were analyzed preoperatively for upper lip bite test (ULBT), ratio of height to thyromental distance (RHTMD), and maxillopharyngeal angle (MPA). Cormack-Lehane (CL) grading was noted in them by an experienced anesthesiologist who was unaware of the pre-operative findings. Results: The incidence of difficult laryngoscopy was 12.8%. ULBT had a high positive predictive value (42.11%) and stood second in terms of sensitivity, specificity, negative predictive value (NPV), and accuracy (90.93%, 45.07%, 91.88%, and 81.07%), respectively. RHTMD had high sensitivity (71.83%) and NPV (93.49%). MPA had highest specificity and diagnostic accuracy (94.43% and 85.79%). Conclusion: Each of the three parameters significantly correlated with CL grading. However, each test scored differently in terms of their sensitivity, specificity, accuracy, and predictive tests when compared to each other. Hence, it will be safer to use a combination of tests which assess different aspects of patient’s airway.
Authors and Affiliations
Pallavi Butiyani, Tasneem Unjhawala, H K Sale, Sangeeta Chandrashekar, Geetanjali Dangat, Lisa Prakash
Keywords
Related Articles
- EP ID EP476886
- DOI -
- Views 84
- Downloads 0
Comparative Study of Akin Staging and Pediatric - Risk, Injury, Failure, Loss, End-stage Kidney Classification in Identifying Acute Kidney Injury in Critically Ill Children
Introduction: Acute kidney injury (AKI) is a common comorbidity in critically ill children, associated with an increased risk of morbidity and mortality. Modern definitions of AKI based on changes in serum creatinine (Cr...
Voice Handicap Index and Voice-related Quality of Life after Botulinum Toxin Injection for Spasmodic Dysphonia Patients
Background: Spasmodic dysphonia (SD) is not an uncommon voice disorder defined as a condition of uncertain etiology with uncontrolled, intermittent, and speech induced spasms of intrinsic muscles of the larynx resulting...
Role of Multidetector Computed Tomography Scan in Evaluation of Neck Mass
Introduction: Neck masses are frequently encountered in general population and hospitals. It is important to differentiate a malignant neck lesion from a benign lesion. Early and precise diagnosis helps in choosing the l...
Effect of Preheating on Surface Roughness and Microhardness of a Nanohybrid Composite Resin - An In Vitro Study
Introduction: The success of dental composites in restorative dentistry stems from their good aesthetic properties and adequate durability. The clinical performance of composite resins is directly related to the degree o...
Morphometric Analysis of Tentorial Incisura and its Clinical Implications
Introduction: Tentorial incisura is important due to transtentorial herniation, a terminal pathophysiological event in various neurosurgical conditions. With advent of modern neuroradiological methods lacuna in understan...