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CTRI Number  CTRI/2025/09/094904 [Registered on: 16/09/2025] Trial Registered Prospectively
Last Modified On: 15/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   Magnesium sulphate and its help in reducing the postoperative pain and ileus 
Scientific Title of Study   A RANDOMISED CONTROLLED TRIAL TO STUDY THE EFFECT OF PREOPERATIVE SYSTEMIC MAGNESIUMSULFATE INFUSION ON POST OPERATIVE PAIN AND POST OPERATIVE ILEUS FOLLOWING NON LAPAROSCOPIC MAJOR ABDOMINAL SURGERIES 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  VUPPARAPALLI SIVA RAM VARMA 
Designation  MS General Surgery Post Graduate 
Affiliation  Chettinad Hospital And Research Institute 
Address  A block,Department of General Surgery, Chettinad hospital and Research Institute, Chettinad health city, SH 49A, Kelambakkam, Tamilnadu, 603103

Kancheepuram
TAMIL NADU
603103
India 
Phone  8978136040  
Fax    
Email  vsivaram19@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr K Muthu Raj 
Designation  Professor of General Surgery 
Affiliation  Chettinad hospital and research institute 
Address  A block,Department of General Surgery, Chettinad hospital and Research Institute, Chettinad health city, SH 49A, Kelambakkam, Tamilnadu, 603103

Kancheepuram
TAMIL NADU
603103
India 
Phone  7305705536  
Fax    
Email  drmuthurajkasinathan@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr K Muthu Raj 
Designation  Professor of General Surgery 
Affiliation  Chettinad hospital and research institute 
Address  A block,Department of General Surgery, Chettinad hospital and Research Institute, Chettinad health city, SH 49A, Kelambakkam, Tamilnadu, 603103

Kancheepuram
TAMIL NADU
603103
India 
Phone  7305705536  
Fax    
Email  drmuthurajkasinathan@gmail.com  
 
Source of Monetary or Material Support  
Chettinad hospital and research institute, Chettinad health city, Rajiv gandhi salai, kelambakkam, Chennai, Tamilnadu, 603103 
 
Primary Sponsor  
Name  Chettinad Hospital and Research Institute 
Address  Chettinad hospital and research Institute, Chettinad health city, SH 49A, Kelambakkam, Tamilnadu, 603103 
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 Vupparapalli Siva Ram Varma  Chettinad hospital and research institute  Department of General Surgery, A Block, Chettinad hospital and research Institute, Chettinad health city, SH 49A, Kelambakkam, Tamilnadu, 603103
Kancheepuram
TAMIL NADU 
8978136040

vsivaram19@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
institutional human ethics committee (CARE IHEC-I)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: 4||Measurement and Monitoring,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  MagnesiumSulphate  40mg/kg magnesium sulfate in 100ml ns 30 minutes before induction as IV infusion 
Comparator Agent  normal saline  normal saline infusion given preoperatively 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patients of age more than 18 and less than 60 years.
Patients undergoing open abdominal surgeries.
Patients who received ASA 1, 2 in Pre anaesthetic check.
Patients with normal Serum Magnesium levels.
Patients who consented to be included in the study 
 
ExclusionCriteria 
Details  Patients of age less than 18 and more than 60 years.
Patients with Liver failure, Renal failure, Heart block, Arrythmia, EF less than 45 percent, Pregnancy,
Neurological disorders, Hypersensitivity
Patients with serum magnesium above normal.
Patients with Blood glucose more than 200mg/dl on the day of surgery.
Patient on Calcium channel blockers.
Patients undergoing laparoscopic abdominal surgeries
Those who don not give consent to be included in the study.  
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
to assess the reduction of duration of post operative ileus on Mgso4 infusion  1, 2, 4, 12, 24 hrs post operatively 
 
Secondary Outcome  
Outcome  TimePoints 
to assess the reduction of post operative pain on Mgso4 infusion  1, 2, 4, 12, 24 hours post operatively 
 
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   Phase 4 
Date of First Enrollment (India)   26/09/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  26/09/2025 
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)  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   Post operative pain management and control may help in early mobilisation and recovery of the patient. Pain during surgery is managed intraoperatively by General anaesthesia or spinal anaesthesia or regional anaesthesia. Post operative pain is managed either by Epidural top up or by IV/IM analgesics. Magnesium is the 4th most common cation in the body and is called the nature’s physiological calcium channel blocker. It interferes with calcium channels and NMDA receptors play an important role in pain relief. Activation of NMDA cause calcium and sodium influx into cell and with an e lux of potassium and initiation of central sensitization of pain. NMDA receptor antagonist plays an important role in central sensation of pain by preventing it. NMDA receptor signalling may be important factor determining the duration and intensity of postoperative pain. Hypomagnesemia is one of the known causes of Ileus. There have been several studies that investigate the e ect of pre and intra op magnesium sulphate infusion and its role in reducing post op analgesia required, where as there is a lack of studies investigating its e ect on post operative ileus. METHODOLOGY: Study design – Prospective Randomised Control trail Sample size-50 Sampling technique- lottery technique SUBJECT SELECTION: INCLUSIVE CRITERIA: This is a RCT study in department of general surgery, Chettinad health and research institute, Kelambakkam, Tamilnadu in patients undergoing major abdominal surgeries.Patients of age >18 and <60 years. Patients undergoing open abdominal surgeries.Patients who received ASA 1, 2 in Pre anaesthetic check.Patients with normal Serum Magnesium levels. Patients who consented to be included in the study. EXCLUSIVE CRITERIA: Patients of age <18 and >60 years. Patients with Liver failure, Renal failure, Heart block, Arrythmia, EF<45%, Pregnancy, Neurological disorders, Hypersensitivity Patients with serum magnesium above normal. Patients with Blood glucose >200mg/dl on the day of surgery. Patient on Calcium channel blockers. Patients undergoing laparoscopic abdominal surgeries Those who don’t give consent to be included in the study. STUDY PROCEDURE: All the patients who fit the inclusion criteria will be observed and following data will be collected 1. Routine blood investigations 2. Pre operative serum magnesium levels 3. Comparative study done , Study group will receive 40mg/kg magnesium sulfate in 100ml ns 30 minutes before induction as IV infusion and using equal volume of Normal saline in control group Postoperative pain on 1st, 2nd ,4th , 12th , 24th postoperative hour as per visual analogue pain scale. Postoperative Time of 1st appearance of bowel sounds noted. Postoperative Time of 1st passage of flatus noted. STATISTICAL METHODS: All collected data will be evaluated using appropriate statistical method SOURCES OF FUNDING AND FINANCIAL REQUIREMENTS FOR THE PROPOSAL: Expenses related to pre- operative, intra-operative and post-operative phase shall be met by the patient. For economically weaker section of patients, a request for concession shall be referred to hospital’s MS o ice with relevant documents (Below poverty line card, Aadhar card) to get permissible and applicable concessional treatment. ETHICAL ISSUES INVOLVED AND MEASURES TO BE TAKEN TO PREVENT ETHICAL ISSUES: Approval of CHRI ethical committee will be obtained. All participants will be informed regarding the purpose of study, pros and cons of the infusio, complication associated with the procedure and confidentiality of research study in local language. An informed consent will also be taken from the study participants who are willing to participate in the study. Consent also shall be taken to reproduce his or her investigations, films clinical evaluation data for publishing in index journals without compromising his or her confidentiality. REFERENCE: Bathina AV, Peetani RK, Vaitla VT. A prospective randomized controlled trial to study the e ect of preoperative and intraoperative magnesium over postoperative ileus and postoperative pain in major non–laparoscopic abdominal surgeries. International Surgery Journal. 2019 Aug 28;6(9):3182-7 
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