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CTRI Number  CTRI/2025/05/086172 [Registered on: 02/05/2025] Trial Registered Prospectively
Last Modified On: 02/05/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   "Comparing Voice Improvement After Throat Surgery Using Coblation or Conventional Methods in Patients with Non-Cancerous Vocal Cord Growths"  
Scientific Title of Study   ASSESSMENT OF VOICE QUALITY IN PATIENTS UNDERGOING MICROLARYNGEAL SURGERY FOR BENIGN VOCAL CORD LESIONS USING COBLATION VERSUS CONVENTIONAL METHOD  
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  BALAJI D 
Designation  Post Graduate  
Affiliation  Bangalore Medical College and Research Institute 
Address  ENT Department, Victoria Hospital City Market, New Tharagupet, Bengaluru

Bangalore
KARNATAKA
560002
India 
Phone  7795889831  
Fax    
Email  dbalajidoc98@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  DR KARTHIK S 
Designation  MBBS MS ENT MRCS 
Affiliation  City Market, New Tharagupet, Bengaluru 
Address  ENT Department, Victoria Hospital City Market, New Tharagupet, Bengaluru

Bangalore
KARNATAKA
560002
India 
Phone  9845132428  
Fax    
Email  dr_karthik_s@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  DR KARTHIK S 
Designation  MBBS MS ENT MRCS 
Affiliation  City Market, New Tharagupet, Bengaluru 
Address  ENT Department, Victoria Hospital City Market, New Tharagupet, Bengaluru


KARNATAKA
560002
India 
Phone  9845132428  
Fax    
Email  dr_karthik_s@yahoo.com  
 
Source of Monetary or Material Support  
Bangalore medical college 
 
Primary Sponsor  
Name  BALAJI D 
Address  ENT Department, Victoria Hospital City Market, New Tharagupet, Bengaluru, 
Type of Sponsor  Other [NIL] 
 
Details of Secondary Sponsor  
Name  Address 
nil  nil 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
BALAJI D  Victoria Hospital, BMCRI   ENT department, Major OT,Room no 113
Bangalore
KARNATAKA 
7795889831

dbalajidoc98@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
ENT Department, Victoria Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: J381||Polyp of vocal cord and larynx, (2) ICD-10 Condition: J382||Nodules of vocal cords, (3) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  MICRLARYNGEAL SURGERY COBLATION TECHNIQUE  A newer technique that uses low-temperature radiofrequency energy (Coblation) to remove lesions with minimal tissue damage. It is thought to potentially result in better voice outcomes and faster healing 
Intervention  MICROLARYMGEAL SURGERY CONVENTIONAL TECHNIQUE USING SCISSORS  Standard microlaryngeal surgery for benign vocal cord lesions using traditional instruments (such as cold steel tools or lasers). This method has been widely used but may involve more thermal or mechanical trauma. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Male 
Details  ENT outpatient department with complaints of hoarseness of voice and on videolaryngoscopy were found to have benign appearing vocal cord lesions. 
 
ExclusionCriteria 
Details  1. Malignant lesions
2. Vocal cord paralysis
3. Patients with severe cervical spondylosis.
4. Patients not willing to give informed consent.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   On-site computer system 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
1. GRBAS SCORE - Grade, Roughness, Breathiness, Asthenia, Strain and Voice
handicap index 10
2. Jitter and shimmer in prat software.
3. Visual analogue score 
one week and 4 weeks after sugery 
 
Secondary Outcome  
Outcome  TimePoints 
2. Jitter and shimmer in prat software.
3. Visual analogue score 
one week and 4 weeks after sugery 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   20/05/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

After obtaining approval and clearance from the institutional ethics committee, the patients fulfilling the inclusion criteria will be enrolled for the study after obtaining informed consent. (Annexure – 1A / 1B/ 1C)

Baseline investigations such as blood sugar levels, complete blood count, renal and liver function tests, HIV, HBsAg, HCV, will be done.

Patients will be screened by videolaryngoscopy under local anaesthesia to find out the pathology. Patients will be explained about the disease, the probable cause and its line of management.

Preoperative voice assessment will be done using GRBAS scoring and voice handicap index and PRAT software.

Patient will be randomized into two groups A and B based on random sequence generated by Statical Package for Social Sciences software, where Group A will include patients undergoing microlaryngeal surgery by conventional method and Group B will include patients undergoing microlaryngeal excision using coblation.

Patients will be followed up postoperatively at an interval of 1 week and 1month for voice assessment

 
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