Sunday, June 6, 2021

Radiological and Audiological Assessment in Patients with Adenoid Hypertrophy Undergoing Adenoidectomy

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Abstract

Enlarged adenoids in children can lead to obstruction of the ET, leading to negative intratympanic pressure and development of Otitis media effusion. Adenoid-nasopharyngeal ratio (ANR) on lateral radiograph of nasopharynx, is one of the most reliable and cost-effective ways of determining the size of adenoids with respect to the nasopharyngeal space. Patients who were clinically diagnosed with adenoid hypertrophy, above the age of 5 years, undergoing adenoidectomy were included in the study. Lateral nasopharynx radiograph, Pure tone audiometry (PTA) and tympanometry were performed. The ANR calculated, graded, and compared with the PTA, tympanograms and size on endoscopic assessment. Taking 0.835 as cut-off value, significant correlation of ANR with PTA and impedance (p = 0.002) was found. 71% abnormal PTA and tympanogram was found with ANR > 0.835 whereas 30.8% with ANR < 0.835. ANR is a useful adjunct as a pre-operative tool for d etermining the need for adenoidectomy in paediatric patients who are not easily willing to undergo endoscopic evaluation. A major drawback is the lack of identification of lateral extent of adenoids.

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