Narayanan Prepageran

ORCID: 0000-0001-5670-9340
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About
Contact & Profiles
Research Areas
  • Head and Neck Surgical Oncology
  • Sinusitis and nasal conditions
  • Ear Surgery and Otitis Media
  • Meningioma and schwannoma management
  • Oral and Maxillofacial Pathology
  • Vestibular and auditory disorders
  • Ear and Head Tumors
  • Hearing, Cochlea, Tinnitus, Genetics
  • Nasal Surgery and Airway Studies
  • Salivary Gland Tumors Diagnosis and Treatment
  • Tracheal and airway disorders
  • Head and Neck Cancer Studies
  • Pituitary Gland Disorders and Treatments
  • Hearing Loss and Rehabilitation
  • Allergic Rhinitis and Sensitization
  • Otolaryngology and Infectious Diseases
  • Olfactory and Sensory Function Studies
  • Tumors and Oncological Cases
  • Congenital Ear and Nasal Anomalies
  • Head and Neck Anomalies
  • Infectious Diseases and Tuberculosis
  • Voice and Speech Disorders
  • Airway Management and Intubation Techniques
  • Teratomas and Epidermoid Cysts
  • Asthma and respiratory diseases

University of Malaya
2016-2025

Ministry of Health
2024

Wave Life Sciences (United States)
2024

University of Kuala Lumpur
2009-2023

University Malaya Medical Centre
2011-2023

Laryngograph (United Kingdom)
2016

University of Aberdeen
2015-2016

Queen Elizabeth Hospital
2016

Council of Economic Advisers
2015

Jubilee Mission Medical College and Research Institute
2012

Purpose: Across Hong Kong, Malaysia, the Philippines, Singapore, Thailand and Vietnam, (referred to as Asia) approximately 30-53 million individuals of 151 employed suffer from allergic rhinitis (AR) urticaria.It is estimated that 90% patients with these conditions are insufficiently treated, impacting socioeconomic burden in terms absence work decreased productivity.This study aims estimate allergies Asia cost savings their adequate management can provide.Due limited availability regional...

10.4168/aair.2018.10.4.370 article EN Allergy Asthma and Immunology Research 2018-01-01

Orbital cavernous hemangiomas (OCH) are the most common adult orbital tumor and represent an ideal index lesion for endonasal surgery. In order to standardize outcomes reporting, anatomic-based staging system was developed.An international, multidisciplinary panel of 23 experts in surgery formed. A modified Delphi method used develop hemangioma exclusively resection (CHEER) with a total 2 rounds being completed.Tumors medial plane along long axis optic nerve may be considered amenable...

10.1002/alr.22316 article EN International Forum of Allergy & Rhinology 2019-02-27

Advancements in endoscopic sinus and skull base surgery created a need for standardized terminology to describe sphenoid surgery. Although classification systems exist other sinuses, one is lacking. Developing such system would standardize procedure descriptions promote common language among surgeons. This study aimed develop new Consensus on novel by running the Delphi with 16 rhinology experts from around world. Four rounds were required reach consensus all stages of classification. The...

10.1002/alr.23572 article EN cc-by-nc-nd International Forum of Allergy & Rhinology 2025-03-24

Background The Allergies in Asia–Pacific Survey describes the symptoms, impact, and treatment of allergic rhinitis (AR) across Australia, China, Hong Kong, Malaysia, Singapore, Taiwan, Vietnam, Philippines. was undertaken to further clarify prevalence physician-diagnosed nasal allergies (NAs), impact on quality-of-life (QOL), existing paradigms gaps, NA medications currently used treatment. Methods Thirty-three thousand three hundred seventy-eight households were screened for individuals, ≥...

10.2500/ajra.2011.25.3674 article EN American Journal of Rhinology and Allergy 2011-09-01

10.1007/s12070-011-0356-x article EN Indian Journal of Otolaryngology and Head & Neck Surgery 2011-11-30

Background Surgical navigation systems have been used increasingly in guiding complex ear, nose, and throat surgery. Although these are helpful, they only beneficial intraoperatively; thus, the novice surgeon will not preoperative training or exposure that can be vital procedures. In addition, there is a lack of reliable models to give surgeons hands-on performing such Methods A technique using an industrial rapid prototyping process by three-dimensional (3D) printing was developed, from...

10.2500/ajra.2012.26.3808 article EN American Journal of Rhinology and Allergy 2012-09-01

Persistent Postural-Perceptual Dizziness (PPPD) is a chronic functional disorder which interferes with the way individuals experience their personal, social and work life.To study impact of disease duration in PPPD on quality life (QOL), dizziness handicap mental health patients.A prospective comparing EQ-5D for QOL, Handicap Inventory (DHI) DASS-21 between 27 patients those who have recovered from an acute vestibular event. Similar parameters symptoms less than one year more were...

10.3233/ves-210087 article EN Journal of Vestibular Research 2021-12-17

To assess the antibacterial and antifungal properties of human cerumen by studying its effect on growth Staphylococcus aureus, Esherichia coli, Pseudomonas aeruginosa Candida albicans.Cerumen samples were collected from 75 normal, healthy subjects aged seven to 80 years, without ear pathology, who attended ear, nose throat out-patient clinic University Malaya Medical Center May 2006 October 2006. Of these samples, 31 had no when cultured nutrient agar. Inhibition studies performed for aureus...

10.1017/s0022215108003307 article EN The Journal of Laryngology & Otology 2008-08-11

Matrix metalloproteinase 13 ( MMP13 ) plays a central role in the MMP activation cascade that enables degradation of extracellular matrix and basement membranes, it is identified as potential driver oral carcinogenesis. Therefore, this study aims to determine copy number, mRNA, protein expression squamous cell carcinoma (OSCC) associate these expressions with clinicopathological parameters. Copy analysis were determined using real-time quantitative PCR immunohistochemistry methods OSCC...

10.1155/2014/897523 article EN cc-by The Scientific World JOURNAL 2014-01-01

A recognized cause of incomplete or cancelled MRI examinations is anxiety and claustrophobic symptoms in patients undergoing MR scanning. This appears to be a problem many centres Western Europe North America, where it said costly terms loss valuable scan time, has led researchers suggesting several anxiety-reducing approaches for MRI. To determine the incidence failed examination among our if there are any associations with patient's sex, age education level, we studied claustrophobia that...

10.1111/j.1440-1673.1998.tb00525.x article EN Journal of Medical Imaging and Radiation Oncology 1998-11-01

Abstract Head and neck squamous cell carcinoma (HNSCC) is generalized term that encompasses a diverse group of cancers includes tumours the oral cavity (OSCC), oropharynx (OPSCC) nasopharynx (NPC). Genetic alterations are common to all HNSCC types likely be important for carcinogenesis. In this study, we have investigated role homeodomain-only homeobox gene, HOPX, in pathogenesis HNSCC. We show HOPX mRNA levels reduced OSCC NPC lines tissues there general reduction protein expression these...

10.1038/srep38758 article EN cc-by Scientific Reports 2016-12-09

Introduction: Persistent postural-perceptual dizziness (PPPD) is a chronic functional vestibular disorder where there persistent or unsteadiness occurring on most days for more than 3 months duration. Treatment recommendations PPPD include rehabilitation therapy (VRT) with without medications and/or cognitive behavioral therapy. Objectives: This paper pilot study designed to compare the effects of Bal Ex as home-based VRT quality life (EQ-5D), handicap (DHI) and mental health (DASS-21)...

10.1177/00034894221111408 article EN Annals of Otology Rhinology & Laryngology 2022-07-06

Despite the advances in diagnosis and treatment of oral squamous cell carcinoma (OSCC), mortality morbidity rates have not improved over past decade. A major drawback OSCC is lack knowledge relating to how genetic instability cancer genomes affects carcinogenesis. Hence, key aim this study was identify copy number alterations (CNAs) that may be associated using high-resolution array comparative genomic hybridization (aCGH). To our first use ultra-high density aCGH microarrays profile a large...

10.1371/journal.pone.0054705 article EN cc-by PLoS ONE 2013-02-06

10.1007/s12070-011-0406-4 article EN Indian Journal of Otolaryngology and Head & Neck Surgery 2011-12-14
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