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CTRI Number  CTRI/2025/11/098217 [Registered on: 28/11/2025] Trial Registered Prospectively
Last Modified On: 28/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Preventing blood pressure drops in elderly patients after spinal anaesthesia with tablet midodrine. 
Scientific Title of Study   Oral midodrine for preventing post-spinal anaesthesia hypotension in elderly: A randomized controlled trial. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Tarun Yadav 
Designation  Professor 
Affiliation  Pt BDS PGIMS Rohtak 
Address  Department of Anaesthesiology, Room number 25, Second Floor, New OT Complex, Pt BDS PGIMS Rohtak

Rohtak
HARYANA
124001
India 
Phone  8826444011  
Fax    
Email  drtarunyadav@yahoo.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Tarun Yadav 
Designation  Professor 
Affiliation  Pt BDS PGIMS Rohtak 
Address  Department of Anaesthesiology, Room number 25, Second Floor, New OT Complex, Pt BDS PGIMS Rohtak

Rohtak
HARYANA
124001
India 
Phone  8826444011  
Fax    
Email  drtarunyadav@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Dr Sandeep kumar 
Designation  Junior Resident 
Affiliation  Pt BDS PGIMS , Rohtak 
Address  Department of Anaesthesiology, room no 25, second floor, new OT complex, Pt BDS PGIMS, Rohtak

Rohtak
HARYANA
124001
India 
Phone  9818096332  
Fax    
Email  s9818096332kumar@gmail.com  
 
Source of Monetary or Material Support  
Government of Haryana Pandit Bhagwat Dayal Sharma post graduate institute of medical sciences. 
 
Primary Sponsor  
Name  Government of Haryana, Pt BDS PGIMS, Rohtak, Haryana 
Address  PGIMS campus, Rohtak, Haryana, 124001 
Type of Sponsor  Government 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 Tarun Yadav  Pt BDS PGIMS Rohtak  Department of Anaesthesiology, Room number 25, Second Floor, New OT Complex, Pt BDS PGIMS Rohtak
Rohtak
HARYANA 
08826444011

drtarunyadav@yahoo.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Biomedical Research Ethics Committee Pt. B. D. Sharma PGIMS/UHS, Rohtak  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 
Intervention  Oral tab Midodrine  Group A - Who will receive oral tab Midodrine 5mg, 90mins before spinal anaesthesia 
Comparator Agent  Oral tab Thiamine  Group B - Who will receive oral tab Thiamine 100mg, 90mins before spinal anaesthesia 
 
Inclusion Criteria  
Age From  60.00 Year(s)
Age To  95.00 Year(s)
Gender  Both 
Details  Adult patients aged 60 years or older of either sex, belonging to ASA physical status I-II scheduled for below umbilical surgery under spinal anaesthesia will be included in the study. 
 
ExclusionCriteria 
Details  Patients with: spinal deformity, uncontrolled hypertension and diabetes, cardiac diseases, history of glaucoma, refusal to participate, non-compliance, liver disease and renal impairment, hyperthyroidism, anticipated surgical duration more than 120 mins. 
 
Method of Generating Random Sequence   Other 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Double Blind Double Dummy 
Primary Outcome  
Outcome  TimePoints 
To compare the incidence post spinal anaesthesia hypotension with use of prophylactic oral midodrine vs placebo.  Post spinal anaesthesia at 0, 2,4,6,8,10,15,20,25,30,35,40,45,60,75,90,105 and 120 minutes. 
 
Secondary Outcome  
Outcome  TimePoints 
1.To compare total volume of IV fluid infused in both group.
2.To compare intraoperative ephedrine consumption in both group.
3.To assess incidence of other complications like- bradycardia, hypertension, shivering, nausea, vomiting, flushing, pruritis in both group. 
At end of surgery.
 
 
Target Sample Size   Total Sample Size="80"
Sample Size from India="80" 
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)   15/12/2025 
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="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
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   Title: Oral midodrine for preventing post- spinal anaesthesia hypotension in elderly: A randomized controlled trial.
Aim: To evaluate the efficacy of oral midodrine as prophylaxis against post- spinal hypotension.
Primary objective: To compare the incidence of post spinal anaesthesia hypotension with use of prophylactic oral midodrine versus placebo.
Secondary Objectives:
To compare total volume of intravenous fluid infused in both group.
To compare intraoperative ephedrine consumption in both group.
To assess incidence of other complications like– bradycardia, pruritis, flushing, hypertension, shivering, nausea, vomiting etc in both group.
Inclusion criteria:-  Adult patients aged 60 years or older of either sex, belonging to ASA Physical status I-II scheduled for below umbilical surgery under spinal anaesthesia will be included in the study. 
Exclusion criteria:- 
Patients with

BMI> 30 kg/m2,
Height  < 130 cm,
Spinal deformity,
Uncontrolled Hypertension and Uncontrolled diabetes,
Patients with Cardiac diseases,
History of glaucoma,
Liver disease and renal impairment, 
Contraindications of spinal anesthesia,
Anticipated surgical duration more than 120 mins.
Non-compliance,
Refusal to participate.
Hyperthyroidism.
Sample size: 80 patients (40 in each group)
Group allocation: Group midodrine(n=40) will receive oral tab midodrine 5mg, 90mins before spinal anaesthesia.
                            Group control(n=40) will receive oral tab thiamine 100mg, 90mins before spinal anaesthesia.
Assessment: 1. Incidence of post spinal anaesthesia hypotension. 
                     2.Total volume of IV fluid infused.
.              3. Intraoperative ephedrine consumption.
.              4. Incidence of other complications
Analysis: Data will be compiled, and appropriate statistical test will be applied for the result..
 
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