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CTRI Number  CTRI/2025/11/097810 [Registered on: 21/11/2025] Trial Registered Prospectively
Last Modified On: 23/02/2026
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparison of effectiveness of pain relief between Injection Magnesium Sulphate and Injection Butorphanol used as additives to Injection Bupivacaine heavy for spinal anesthesia in women undergoing lower abdominal gynecological surgery. 
Scientific Title of Study   A COMPARATIVE STUDY OF INTRATHECAL MAGNESIUM SULPHATE VERSUS INTRATHECAL BUTORPHANOL AS ADJUVANT TO HYPERBARIC BUPIVACAINE IN ELECTIVE INFRAUMBILICAL GYNAECOLOGICAL SURGERY. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
nil  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Poushali De 
Designation  Senior Resident 
Affiliation  North Bengal Medical College and Hospital 
Address  Department of Anesthesiology,North Bengal Medical College and Hospital,Sushrutanagar, District-Darjeeling.West Bengal.

Darjiling
WEST BENGAL
734012
India 
Phone  7547929127  
Fax    
Email  drdeanaesth21@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Abhishek Ganguly 
Designation  Assistant Professor 
Affiliation  North Bengal Medical College and Hospital 
Address  Department of Anesthesiology, North Bengal Medical College and Hospital,Sushrutanagar,District- Darjeeling. West Bengal.

Darjiling
WEST BENGAL
734012
India 
Phone  9831404520  
Fax    
Email  abhi_here4u@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Abhishek Ganguly 
Designation  Assistant Professor 
Affiliation  North Bengal Medical College and Hospital 
Address  Department of Anesthesiology, North Bengal Medical College and Hospital,Sushrutanagar,District -Darjeeling.West Bengal.

Darjiling
WEST BENGAL
734012
India 
Phone  9831404520  
Fax    
Email  abhi_here4u@yahoo.com  
 
Source of Monetary or Material Support  
North Bengal Medical College and Hospital,Sushrutanagar ,Darjeeling,West Bengal,734012 
 
Primary Sponsor  
Name  Department of Anesthesiology, North Bengal Medical College and Hospital 
Address  NBMCH,Sushrutanagar,Darjeeling, West Bengal, 734012 
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 ABHISHEK GANGULY  NORTH BENGAL MEDICAL COLLEGE ANAESTHESIOLOGY DEPARTMENT  PAC room,Gynecology OT Complex, PACU room,Department Of Anesthesiology.
Darjiling
WEST BENGAL 
9831404520

abhi_here4u@yahoo.com 
 
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: N939||Abnormal uterine and vaginal bleeding, unspecified, (2) ICD-10 Condition: N809||Endometriosis, unspecified, (3) ICD-10 Condition: N819||Female genital prolapse, unspecified, (4) ICD-10 Condition: N926||Irregular menstruation, unspecified, (5) ICD-10 Condition: N839||Noninflammatory disorder of ovary,fallopian tube and broad ligament, unspecified, (6) ICD-10 Condition: N832||Other and unspecified ovarian cysts,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  INTRATHECAL BUTORPHANOL AS ADJUVENT TO HYPERBARIC BUPIVACAINE IN ELECTIVE INFRAUMBILICAL GYNAECOLOGICAL SURGERY  50 Patients of ASA I or II physical status, aged 20-55year , undergoing elective Gynecological surgery were divided into 2 groups,group M and group B.Group B will receive 3.0ml of 0.5% Bupivacaine heavy +0.25ml(250mcg) of Inj. Butorphanol(1mg/ml)+ 0.25ml of Normal Saline.  
Comparator Agent  INTRATHECAL MAGNESIUM SULPHATE AS ADJUVENT TO HYPERBARIC BUPIVACAINE IN ELECTIVE INFRAUMBILICAL GYNAECOLOGICAL SURGERY.  50 Patients of ASA I or II physical status, aged 20-55year , undergoing elective Gynecological surgery were divided into 2 groups – Group M will receive 3.0 ml of 0.5% Bupivacaine heavy +0.2ml(100mg) of 50% Inj. Magnesium Sulphate +0.3 ml Normal Saline. 
 
Inclusion Criteria  
Age From  20.00 Year(s)
Age To  55.00 Year(s)
Gender  Female 
Details  Female patient posted for elective gynecological surgery
Age 20 to 55yrs
ASA 1 ,2
BMI 18.5 to 24.9
 
 
ExclusionCriteria 
Details  Refusal of patients to undergo this study
History of hypersensitivity to any of the medications used in the study
Active neurological, cardiac, respiratory, blood dyscrasias, renal disease, any contraindication of subarachnoid block
Patients with dyselectrolytemias
Surgery duration of more than 3 hrs.
Spinal deformity
Pregnant patients 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Time of sensory and motor block,total duration of motor and sensory block,time for first rescue analgesia.  1 year 
 
Secondary Outcome  
Outcome  TimePoints 
Quality of the block both sensory and motor (modified Bromage) and VAS scale for requirement of rescue analgesia.Monitoring of vital Spo2, SBP, DBP, PR
Comparison of any other notifiable adverse event like desaturation, severe hypotension, bradycardia etc. as well as any sedation, cardiac arrythmias, pruritus, hypersensitivity reaction.
 
1 year 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
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)   01/12/2025 
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)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details
Modification(s)  
N/A 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary   This study is a prospective, institution based, double blind, randomized comparative study. Place of study is PAC room and Gynecology OR at North Bengal Medical College.Period of study is one year.This study will compare the onset and duration of motor and sensory block due to addition of Magnesium Sulphate or Butorphanol as adjuvant added to Bupivacaine heavy in admitted patients undergoing gynecological surgeries under spinal anesthesia.In a Government Medical College in a hilly peripheral district in India like North Bengal Medical College, there is a lack of availability of commonly used opioids like Morphine , Meperidine and Fentanyl whereas agents like Magnesium Sulphate and Butorphanol are readily available for use as adjuvant in spinal anesthesia.However there is dearth of knowledge in comparison between these two agents when used as adjuvant in spinal anesthesia.Our study aims to find a direct comparative data between Butorphanol and Magnesium Sulphate as well as find out any complications as well as side effects of using these drugs as adjuvant in spinal anesthesia.Our hypothesis is that Butorphanol will be more effective as adjuvant in spinal anesthesia than Magnesium Sulphate in gynecological surgeries, both in terms of intraoperative as well as post operative pain relief.Calculated sample size is fifty patients with twenty five in each group.The time of sensory and motor block, duration of sensory and motor block, time for first rescue analgesia, timed measurement of vitals, perioperative VAS score and any postoperative complications. 
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