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CTRI Number  CTRI/2021/12/038667 [Registered on: 15/12/2021] Trial Registered Prospectively
Last Modified On: 24/03/2022
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Other 
Public Title of Study   Comparison of Laryngeal scan and Laryngoscopy in patients who underwent thyroid surgery 
Scientific Title of Study   To compare the efficacy of Transcutaneous Laryngeal Ultrasonography (TLUSG) and Direct Laryngoscopy in assessing the function of vocal cords postoperatively in Thyroidectomy patients 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Parul Jindal 
Designation  Professor 
Affiliation  Himalayan Institute of Medical Sciences 
Address  Department of Anesthesia Himalayan Institute of Medical Sciences,Swami Rama Himalayan University

Dehradun
UTTARANCHAL
248140
India 
Phone  9456547229  
Fax    
Email  parulpjindal@yahoo.co.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr sreya Sri 
Designation  Post graduate resident 
Affiliation  Himalayan institute of medical sciences 
Address  Department of anesthesia Himalayan institute of medical sciences Swamiram Himalayan University Jollygrant

Dehradun
UTTARANCHAL
248140
India 
Phone  09133976357  
Fax    
Email  sreyasrisirpurkar1@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr sreya Sri 
Designation  Post graduate resident 
Affiliation  Himalayan institute of medical sciences 
Address  Department of anesthesia Himalayan institute of medical sciences Swamiram Himalayan University Jollygrant

Dehradun
UTTARANCHAL
248140
India 
Phone  09133976357  
Fax    
Email  sreyasrisirpurkar1@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesia, Himalayan Institute of Medical Sciences, Swami Ram Nagar,Jollygrant Dehradun 
 
Primary Sponsor  
Name  Department of anesthesiology Himalayan Institute of Medical Sciences 
Address  Himalayan Institute of Medical Sciences Swami Rama Himalayan University Dehradun 
Type of Sponsor  Private medical college 
 
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 
Dr Parul Jindal  Himalayan Institute ofMedical Sciences  Himalayan Institute ofMedical SciencesInduction room, pre oparea, operation theatere2nd floor, Departmentof anaesthesia,CancerResearch Institute,Himalayan Institute ofMedical Sciences,Swami RamaHimalayan University,jollygrantDehradunUTTARANCHAL
Dehradun
UTTARANCHAL 
9456547229

parulpjindal@yahoo.co.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1.ASA physical status I and II of either sex
2.Age between 18-65 years
3.Scheduled for thyroid surgeries under general anaesthesia 
 
ExclusionCriteria 
Details  1. Patients belonging to asa IV
2. Pre-existing neurological disease affecting vocal cords
3. Patient with limited neck extension
4.patients with previous neck surgeries
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To assess of vocal cords by both laryngeal ultrasonography and direct laryngoscopy in compare which modality is better and provides good patient comfort in Thyroidectomy patients  Opd vist - indirect laryngoscopy or laryngo endoscopy Preoperatively 30 minutes before induction of Anesthesia Laryngeal ultrasound by Anesthesiologist 10minutes before extubation direct Laryngoscopy and assesment of vocal colds
In first hour of postoperative period by 2nd Laryngeal ultrasound by different anesthesiologist followed by 5 days on the day of discharge indirect laryngoscopy 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate the heamodynamic parameters and patients comfort while assseing the vocal cords using both methods   Blood pressure,heart rate,spo2, respiratory rate and mean arterial pressure are assesed before extubation and also noted at 1 min 2min 3 min 4 min 5 min during directlarunhiscopy
And similarly noted while performing Transcutaneous ultrasonography 
 
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)   15/12/2021 
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="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   None yet 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary   Vocal cord paresis or palsy caused as a result of recurrent laryngeal nerve injury is a complication of disquietude as it can also be a mainspring of medicolegal litigation. Hence the preservation of recurrent laryngeal nerve (RLN) becomes the most importa nt part of thyroid surgery. The incidence of recurrent laryngeal nerve injury varies, ranging from 0.4% to 7.2% for temporary paresis and from 0% to 5.2% for permanent paralysis

Commonly pati ents undergoing thyroidectomy are evaluated for postoperative recurrent laryngeal nerve function for vocal cord mobility with indirect laryngoscopy.The practice of examining the vocal cords in the immediate postoperative period just after the extubation for the presence of any vocal cord dysfunction is advocated by many surgeons. But, in two settings patients are exposed to unnecessary laryngoscopic examinations which often cause discomfort to the patient.Tran scutaneous ultrasound (USG) is a cheap, noninvasive substitute to the above methods for examining the patients to assess the vocal cord function routinely for elective Thyroidectomy both preoperatively and postoperatively.Wong KP, et al. conducted a study in which 204 patients underwent TLUSG and direct laryngoscopy before and after elective thyroidectomy. For both examinations, vocal cord movements were independently graded. To assess accuracy, TLUSG findings were correlated with direct l aryngoscopy findings. Postoperative TLUSG had a sensitivity, specificity, positive predictive value, and negative predictive value of 93.3%, 97.8%, 77.8%, and 99.4%, respectively.

STUDY DESIGN
 Type of study : Prospective Observational Cohort Study. Sample size and sampling methods : ee written informed consent will be The study of Wong KP, et al observed that sensitivity and specificity of TLUSG in di agnosing VCP were 93.3%, 97.8% respectively.(

Taking these values as reference, the minimum required sample size with desired precision of 15%, 80%power of study and5% level of significance is 32 patients. To reduce margin of error, total sample size taken is 40. 

 
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