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CTRI Number  CTRI/2023/04/051540 [Registered on: 12/04/2023] Trial Registered Prospectively
Last Modified On: 22/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Effect of Tolvaptan in preventing decrease in blood sodium levels after surgery 
Scientific Title of Study   The Effect of Single Dose of Tolvaptan on the Incidence of Post operative Hyponatremia after major surgeries 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Prasanna Vadhanan 
Designation  Professor 
Affiliation  Vinayaka Missions Research Foundation 
Address  Department Of Anaesthesiology Vinayaka Missions Medical College and Hospital,Keezhakasakudy Medu, Kottucherry Post, Karaikal, Puducherry.

Karaikal
PONDICHERRY
609609
India 
Phone    
Fax    
Email  vadhanan.prasanna@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Prasanna Vadhanan 
Designation  Professor 
Affiliation  Vinayaka Missions Research Foundation 
Address  Department Of Anaesthesiology Vinayaka Missions Medical College and Hospital,Keezhakasakudy Medu, Kottucherry Post, Karaikal, Puducherry.

Karaikal
PONDICHERRY
609609
India 
Phone    
Fax    
Email  vadhanan.prasanna@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Karthik Sarma Akella 
Designation  Post Graduate 
Affiliation  Vinayka Missions Research Foundation 
Address  Department Of Anaesthesiology Vinayaka Missions Medical College and Hospital,keezhakasakudy Medu, Kottucherry Post, Puducherry.
No 2 Department of Anaesthesia First floor Vinayaka Missions Medical College Karaikal
Karaikal
PONDICHERRY
609609
India 
Phone    
Fax    
Email  karthiksarma.akella@gmail.com  
 
Source of Monetary or Material Support  
Vinayaka Missions Medical College 
 
Primary Sponsor  
Name  Vinayaka Missions Research Foundation 
Address  Sankari Main Road (NH-47), Ariyanoor, Salem - 636 308 Tamil Nadu, India. 
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 
Karthik Sarma Akella  Vinayaka Missions Medical College and Hospital  Room no:2, Department of Anaesthesiology, Vinayaka Missions Medical College and Hospital, Keezhakasakudy Medu, Kotucherry Post, Karaikal, Puducherry, 609609
Karaikal
PONDICHERRY 
9730069543

karthiksarma.akella@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethical Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K800||Calculus of gallbladder with acutecholecystitis, (2) ICD-10 Condition: M171||Unilateral primary osteoarthritisof knee, (3) ICD-10 Condition: H701||Chronic mastoiditis, (4) ICD-10 Condition: N201||Calculus of ureter, (5) ICD-10 Condition: K402||Bilateral inguinal hernia, withoutobstruction or gangrene, (6) ICD-10 Condition: C501||Malignant neoplasm of central portion of breast,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Placebo  Similar looking placebo tablet orally one hour before surgery 
Intervention  Tolvaptan  Oral tolvaptan 15mg one hour before surgery 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  All adult patients undergoing major surgeries of more than 2 hours duration under regional or general anaesthesia 
 
ExclusionCriteria 
Details  Bowel obstruction/malabsorption
Chronic renal disease
Electrolyte imbalance
Allergy/contraindication to study drugs 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Centralized 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Serum sodium values  On first postoperative day 
 
Secondary Outcome  
Outcome  TimePoints 
Urine output
Blood pressure
Postoperative stay 
During surgery
Postoperative period 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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)   15/04/2023 
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   NA 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary   After obtaining informed written consent, detailed history, complete physical examination and routine investigations for all the patients.
Preoperative serum Na+ K+ Cl- will be measured.
Patients will be divided into two groups Group c and Group s
Group s of 50 will receive Tab.Tolvaptan 15mg and Group c of 50 will receive Tab.placebo 1 hours before the surgery.
Once the patient is shifted into the operation theatre the patients vitals including the hemodynamic parameters such as Blood Pressure, Heart Rate,ECG and SpO2 will be monitored at frequent intervals of 5mins.
Fluid loss during the duration of the surgery will be replaced in the form of lactated ringer solution in 3:1 ratio while the blood loss will be replaced by blood transfusion.
The duration of the surgery will be recorded by marking the start and end time of the procedure.

The postoperative serum electrolytes will be measured on post operative day one.
Electrolytes will be compared in both groups post operatively and statistical analysis will be done to determine the effect of tolvaptan.
 
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