Denny, S (2022) A Comparitive study for Assessment of Vocal Fold Vibratory Function in Patients with Thyroid Neoplasm Preoperatively and Postoperatively. Masters thesis, Stanley Medical College, Chennai.
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Abstract
INTRODUCTION: A person’s voice is a very personal attribute that is dependent on signals from specialised areas of brain and a coordinated movement of laryngeal muscles. The vibrations of the two vocal folds in the middle of larynx sets up vibrations of air that resonates through the upper airway tract leading to the sounds of the voice. An abnormal voice makes mutual communication difficult, tiring and can lead to great social, occupational and emotional impairment. A generally accepted and pragmatic definition of normal voice is one having the following characteristics: • It is audible, clear or stable in a wide range of acoustic settings. • It is appropriate for the gender and age of that individual. • It is capable of fulfilling its linguistic and paralinguistic functions. • It does not easily fatigue. • It is not associated with pain or discomfort on phonation Thyroid neoplasms are a commonly encountered disease entity and surgical procedures for thyroid neoplasms, benign or malignant are common operations in the head and neck. Owing to the close anatomical relationship between the thyroid gland and the laryngeal nerves, hoarseness of voice due to intraoperative recurrent laryngeal injury is one of the most common complications. AIM OF THE STUDY: To compare the vocal fold vibratory function in patients with thyroid neoplasm preoperatively and postoperatively. OBJECTIVES: 1. To compare vocal fold vibratory changes in patients with thyroid neoplasm preoperatively and postoperatively. 2. To compare the parameters of voice in patients with thyroid neoplasm preoperatively and postoperatively. 3. To assess the importance of voice subjectively in patients with thyroid neoplasm preoperatively and postoperatively using Voice Handicap Index. MATERIALS AND METHODS: The present study was conducted in the Department Of Otorhinolaryngology, Head And Neck Surgery at Government Stanley Medical College And Hospital for a time period of one year from November 2020 to October 2021. A total of forty patients within the age group 12 to 50 years planned for Hemithyroidectomy or Total Thyroidectomy presenting to Department of Otorhinolaryngology, Head and Neck Surgery and Department of General Surgery were enrolled for this study. DESIGN OF STUDY: Prospective Study. PERIOD OF STUDY: One year (November 2020 to October 2021) INCLUSION CRITERIA: ● Patients with thyroid neoplasms planned for Hemithyroidectomy or Total Thyroidectomy. ● Age more than 12 years and less than 50 years. ● Both sex. EXCLUSION CRITERIA: ● Patients with medical illness like Chronic Obstructive Pulmonary Disease, Coronary Artery Disease, Chronic Renal Failure. ● Patients with preoperative voice disorders. CONCLUSION: • Subjective voice changes are found in upto 20% of the patients in the early postoperative period (6 weeks). VHI-30 index was more affected in patients undergoing total thyroidectomy. • Factors other than laryngeal nerve injury appear to alter the post thyroidectomy voice. • Statistically significant changes were observed in acoustic parameters of voice, namely jitter, Noise to Harmonics Ratio and Maximum phonation time. • 15% of the patients showed an alteration in atleast 1 parameter in videostroboscopic examination. • The natural history of post thyroidectomy voice disturbances in patients with normal preoperative voice has not been systematically studied and its characterization is important for voice rehabilitation.
| Item Type: | Thesis (Masters) |
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| Additional Information: | 221914051 |
| Uncontrolled Keywords: | Assessment, Vocal Fold Vibratory Function, Thyroid Neoplasm Pre operatively, Post operatively. |
| Subjects: | MEDICAL > Otolaryngology > MEDICAL > Otolaryngology |
| Depositing User: | Subramani R |
| Date Deposited: | 03 May 2021 10:12 |
| Last Modified: | 17 Dec 2023 08:03 |
| URI: | http://repository-tnmgrmu.ac.in/id/eprint/15758 |
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