• JNMA J Nepal Med Assoc · Sep 2019

    Prevalence of Dangerous Ethmoid in a Tertiary Center in Eastern Nepal.

    • Sudeep Mishra, Shyam Thapa Chhetri, Ashok Raj Pant, Shankar Prasad Shah, and Sriti Manandhar.
    • Department of Otolaryngology, BP Koirala Institute of Health Sciences, Dharan, Nepal.
    • JNMA J Nepal Med Assoc. 2019 Sep 1; 57 (219): 311-314.

    IntroductionEndoscopic sinus surgery is a well-known approach for sino-nasal pathologies. Due to close proximity to the brain and orbit, the surgeon should be aware of the sino-nasal anatomy and its associated variations. Detailed preoperative assessment of the sinus computed tomography scans reduces the frequency of severe complications in patients undergoing an endoscopic sinus surgery. So, the aim of this study is to find the prevalence of dangerous ethmoid in a tertiary center in eastern Nepal.MethodsA descriptive cross-sectional study was performed in a Computed tomography scan of 50 patients with chronic sinusitis undergoing endoscopic sinus surgery from February 2018 to August 2018 in the department of Otolaryngology and Radiology of BP Koirala institute of health sciences after taking ethical approval from Institutional Review Committee of the institute. Measurements are taken in the coronal plane. The depth of the lateral lamella of the cribriform plate was defined according to the Keros classification which defines the dangerous ethmoid. and side. Data entered in MS excel. Statistical analysis was performed in SPSS version 11.5.ResultsKeros type I, II, and III were noted in 17 (17%), 54 (54%) and 29 (29%) of cases respectively. The mean width of the olfactory fossa, medial orbital wall distance and distance from medial nasal concha were 3.57mm, 8.77mm & 17.78mm respectively.ConclusionsThe most common type of dangerous ethmoid was keros type II.ConclusionsThe most common type of dangerous ethmoid was keros type II.

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