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CTRI Number  CTRI/2025/11/098048 [Registered on: 25/11/2025] Trial Registered Prospectively
Last Modified On: 24/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Other 
Public Title of Study   Fasting time and low blood pressure during anaesthesia in adults an observational study 
Scientific Title of Study   Effect of preoperative fasting duration on incidence of hypotension during spinal anaesthesia in adults - observational study 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
Nil  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Mohananprasad 
Designation  PG scholar 
Affiliation  SRM Institute of Science and Technology 
Address  Room No D4-23,4th floor, D block Extension, Department of Anesthesia, SRM medical college, SRM Nagar,Potheri, Kattankulathur, Chengalpattu district, Tamil Nadu -603203 India

Chennai
TAMIL NADU
603203
India 
Phone  8925251189  
Fax    
Email  mohananprasad27@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Aravindhan K Y  
Designation  Assistant Professor 
Affiliation  SRM Institute of Science and Technology 
Address  Room No D4-26,4th floor, D block Extension, Department of Anesthesia, SRM medical college, SRM Nagar,Potheri, Kattankulathur, Chengalpattu district, Tamil Nadu -603203 India.

Chennai
TAMIL NADU
603203
India 
Phone  8940068386  
Fax    
Email  aravindk3@srmist.edu.in  
 
Details of Contact Person
Public Query
 
Name  Mohananaprasad 
Designation  PG scholar 
Affiliation  SRM Institute of Science and Technology 
Address  Room No D4-23,4th floor, D block Extension, Department of Anesthesia, SRM medical college, SRM Nagar,Potheri, Kattankulathur, Chengalpattu district, Tamil Nadu -603203 India.

Chennai
TAMIL NADU
603203
India 
Phone  8925251189  
Fax    
Email  mohananprasad27@gmail.com  
 
Source of Monetary or Material Support  
SRM Institute of Science and Technology 
 
Primary Sponsor  
Name  SRM Institute of Science and Technology 
Address  SRM medical college Hospital and Research Centre, SRM Nagar Potheri, Kattankulathur Chengalpattu Tamil Nadu -603203 India 
Type of Sponsor  Research institution and hospital 
 
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 ARAVINDHAN  SRM medical college Hospital  Room No:D4-23,4th floor, D block Extension, Department of Anesthesia, SRM medical college, SRM Nagar,Potheri, Kattankulathur, Chengalpattu district, Tamil Nadu -603203 India
Chennai
TAMIL NADU 
8940068386

aravindk3@srmist.edu.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee - SRM Medical College Hospital and Research Centre  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: I959||Hypotension, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Comparator Agent  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1.Patients aged between 18 years to 60 years
2.Scheduled for elective surgical procedures under spinal anaesthesia
3.Classified as ASA physical status Class I, II, or III

 
 
ExclusionCriteria 
Details  1.Patients with psychiatric illness.
2.Refusal to give consent for participation in the study
3.Emergency surgeries
4.Delayed gastric emptying
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To determine whether prolonged preoperative fasting duration is associated with an increased incidence of hypotension following spinal anaesthesia in adult surgical patients  Each patient’s fasting duration will be recorded before surgery and they will be grouped as Group A (6 hours), Group B (6–8 hours), or Group C (greater than 8 hours) and In intraoperative MAP will be recorded at time period of preoperatively, zeroth minute of spinal anesthesia , 2 minute time of spinal anesthesia, 5th minute of spinal anesthesia, 15th minute of spinal anesthesia and 30th minutes time of spinal anesthesia 
 
Secondary Outcome  
Outcome  TimePoints 
Nil  Nil 
 
Target Sample Size   Total Sample Size="120"
Sample Size from India="120" 
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)   22/12/2025 
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="0"
Months="8"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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 - YES
  1. What data in particular will be shared?
    Response - All of the individual participant data collected during the trial, after de-identification.

  2. What additional supporting information will be shared?
    Response - Informed Consent Form

  3. Who will be able to view these files?
    Response - Researchers who provide a methodologically sound proposal.

  4. For what types of analyses will this data be available?
    Response - To achieve aims in the approved proposal.

  5. By what mechanism will data be made available?
    Response - Proposals should be directed to [mohananprasad27@gmail.com].

  6. For how long will this data be available start date provided 21-10-2026 and end date provided 21-07-2028?
    Response - Immediately following publication. No end date.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - Nil
Brief Summary   This prospective observational study evaluates whether the duration of preoperative fasting influences the incidence of hypotension in adults undergoing spinal anaesthesia for elective surgeries. A total of 120 patients will be classified based on fasting hours. Blood pressure changes after spinal anaesthesia will be assessed to determine the association between fasting duration and hypotension. The findings may help optimize fasting guidelines and improve perioperative patient safety 
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