--- abstract: 'Objectives of the study: The individuals with laryngopharyngeal reflux are prone for aspiration of refluxed contents and so there is a need for aerodynamic evaluation in these individuals. Hence, the present study investigated the aerodynamic characteristics in individuals with Laryngopharyngeal reflux. Study design: Prospective control group design. Method: Thirty laryngopharyngeal reflux subjects and 30 normal subjects participated in the study. Aerodynamic parameters such as vital capacity, mean air flow rate, maximum phonation duration and phonation quotient were measured using Aero Phone Instrument ((Model 6800). Independent t test was employed for statistical inference. Results: The results revealed that the vital capacity and maximum phonation duration values were lower for laryngopharyngeal reflux subjects when compared to normal controls. No significant differences were observed for mean air flow rate and phonation quotient. Conclusions: The results revealed that the laryngopharyngeal reflux individuals showed significant deviations in aerodynamic parameters when compared to normal individuals. Thus study confirms aerodynamic abnormalities in laryngopharyngeal reflux subjects' altloc: - http://www.ojhas.org/issue28/2008-4-5.htm chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: - radheesh_b@yahoo.co.in - ~ creators_name: - family: B given: Radish Kumar honourific: '' lineage: '' - family: Bhat given: Jayashree S. Bhat honourific: '' lineage: '' date: 2009-02-25 date_type: published datestamp: 2009-03-28 09:31:44 department: ~ dir: disk0/00/00/63/92 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: - Kakkilaya BS editors_name: - family: Kakkilaya given: Srinivas honourific: Dr. lineage: '' eprint_status: archive eprintid: 6392 fileinfo: /style/images/fileicons/application_pdf.png;/6392/1/2008%2D4%2D5.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'Laryngopharyngeal Reflux, Aerodynamic measures, Dysphonia' lastmod: 2011-03-11 08:57:20 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: 4 pagerange: ~ pubdom: TRUE publication: Online Journal of Health And Allied Sciences publisher: Dr. B.S. Kakkilaya refereed: TRUE referencetext: "1.Scott, R. & Gelhot, GJ. Gastroesophageal reflux and its manifestation. Laryngoscope. 1999; 109: 1354-1362.\r\n2.Koufman, J. The otolaryngologic manifestations of gastroesophageal reflux disease. Laryngoscope. 1991; 101: 1-78.\r\n3.Orlando, RC. The pathogenesis of gastroesophageal reflux disease: the relationship between epithelial defense, dysmotility, and acid exposure. Am J Gastroenterol. 1997; 92: 3-5.\r\n4.Ross, J, Noordzi, JP, & Woo, P. Voice Disorders in Patients with suspected laryngopharygeal reflux disease. J Voice. 1998; 12: 84-88.\r\n5.Shaw, GY, Searl, JP, Young, JL. & Miner, PB. Subjective Laryngoscopic and Acoustic Measurement of Laryngeal reflux. Before and after treatment with omeprazole. J Voice. 1996; 10: 410-418.\r\n6.Hamdan, AL, Sharara, AI, Younes, A, & Fuleihan, N. Effect of aggressive therapy on Laryngeal symptoms and voice characteristics in patients with Gastroesophageal Reflux. Acta Otolaryngol. 2001; 124: 868-872.\r\n7.Cesari, U, Galli, J, Ricciardiello, F, Cavaliere, M & Galli, V. Dysphonia and Laryngopharyngeal reflux. Acta Otolaryngol, 2004; 24:13-19.\r\n8.Oguz, H, Tarhan, E, Korkmaz, M, Yilmaz, U, Safak, MA, Demirci, M & Ozluoglu, LN. Acoustic Analysis Findings in Objective Laryngopharyngeal Reflux Patients. J Voice. 2006; 20: 10-17.\r\n9.Slobodan, MM. Comparative analysis of voice in diagnostics of T1 and T2 vocal cord carcinoma. Archeives of oncology. 2003; 11:139-242.\r\n10.De Floor T, Borsel, JV, Curfs, L & Bodt, MD. Aerodynamic and Acoustic Characteristics of Voice in Prader-Willi Syndrome. J Voice, 2001; 15: 284-290.\r\n11.Issing, W, Gross, M. & Tauber, S. Manifestations of gastroesophageal reflux in otorhinolaryngology. Laryngorhinootologie. 2001;80: 464-469." relation_type: [] relation_uri: [] reportno: ~ rev_number: 20 series: ~ source: ~ status_changed: 2009-03-28 09:31:44 subjects: - OJHAS succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: Aerodynamic Analysis Of Voice In Persons With Laryngopharyngeal Reflux type: journale userid: 4338 volume: 7