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CTRI Number  CTRI/2025/04/085209 [Registered on: 21/04/2025] Trial Registered Prospectively
Last Modified On: 18/04/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia
Diagnostic
Screening 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Comparison of general versus neuraxial anaesthesia on perioperative brain natriuretic peptide levels in patients undergoing lower limb surgery  
Scientific Title of Study   Comparison of general versus neuraxial anaesthesia on perioperative brain natriuretic peptide levels in patients undergoing lower limb surgery - A prospective 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  Ankita 
Designation  Assistant Professor 
Affiliation  AIIMS Bhopal 
Address  Department of Trauma and Emergency Medicine, AIIMS Bhopal

Bhopal
MADHYA PRADESH
462020
India 
Phone  9304812924  
Fax    
Email  ankita.sharma483@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Ankita 
Designation  Assistant Professor 
Affiliation  AIIMS Bhopal 
Address  Department of Trauma and Emergency Medicine, AIIMS Bhopal


MADHYA PRADESH
462020
India 
Phone  9304812924  
Fax    
Email  ankita.sharma483@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Ankita 
Designation  Assistant Professor 
Affiliation  AIIMS Bhopal 
Address  Department of Trauma and Emergency Medicine, AIIMS Bhopal


MADHYA PRADESH
462020
India 
Phone  9304812924  
Fax    
Email  ankita.sharma483@gmail.com  
 
Source of Monetary or Material Support  
All India Institute of Medical Sciences, Saket Nagar Bhopal, Madhya Pradesh 462020 
 
Primary Sponsor  
Name  All India Institute of Medical Sciences Bhopal 
Address  Saket Nagar Bhopal Madhya Pradesh 462020 
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
Harish Kumar  Department of Anaesthesiology, AIIMS Bhopal 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Ankita  AIIMS Bhopal  Department of trauma and emergency medicine, AIIMS bhopal saket nagar, MP, 462020
Bhopal
MADHYA PRADESH 
9304812924

ankita.sharma483@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Human Ethics Committee, AIIMS Bhopal  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  patients more than 45 years with known cardiac comorbidities as mentioned in inclusion criteria.  General anesthesia or spinal anesthesia for patients undergoing lower limb surgery and BNP levels will be compared after the surgery 
 
Inclusion Criteria  
Age From  45.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  Patients over 45 years of age, which fulfil one or more of the following four criteria undergoing non-cardiac lower limb surgery History of coronary artery disease or/and valvular lesion with EF more than 30 percent, History of peripheral arterial disease, History of stroke OR Any three of seven- Age greater than or equal to 70 years, Undergoing major surgery, History of congestive heart failure, History of transient ischemic attack, Diabetes and currently taking an oral hypoglycaemic agent or insulin, History of Hypertension
 
 
ExclusionCriteria 
Details  Cardiomyopathic lesions with EF less than 30 percent.
Tight stenotic lesions
Severe regurgitant lesions
Fatal arrhythmia eg Ventricular tachycardia
renal impairment Cr greater than 1.2
surgery related problems: operation longer than 3 hours
patient resuscitation with more than 3 litres
blood loss more than 1 liter 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Serum BNP levels were measured   Preoperatively one hour before surgery and postoperatively eight hours after surgery 
 
Secondary Outcome  
Outcome  TimePoints 
1.Monitor changes in hemodynamics in relation to type of anesthesia.
2.Efficiency of BNP in detection for cardiac complications in the form of non-fatal MI, arrhythmias and sudden cardiac death until discharged after at least 72h. 
HR, MAP, SBP, DBP, and SpO2 were measured at pre-operative, at induction, 30 mins, 1 hr, 1hr 30mins, 2hrs, 2hrs 30mins, 3hrs, recovery room, 8 hrs post-operative.
Complications were noted 72 hours after surgery. 
 
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   Phase 4 
Date of First Enrollment (India)   15/05/2025 
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 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 - NO
Brief Summary  

Risk stratification of patients undergoing non-cardiac surgery is vital to minimise peri-operative adverse cardiac and cardiovascular outcomes. Surgery causes myocardial stress and increases cardiovascular risk and mortality. Cardiac biomarkers appear to be better predictors of myocardial damage across all types of surgical procedures. Amongst those predictors, troponin and brain natriuretic peptide (BNP) are the main biomarkers investigated to date. 

BNP is mainly synthesised and secreted by myocytes in the left ventricle (LV) as a response to myocytes stretched by pressure overload or volume expansion of the ventricle. The synthesis and secretion of BNP can be induced by mechanical stress, systemic ischemia and hypoxia, neurohumoral factors, and more. It is used as a predictor for diagnosing and predicting the prognosis of various heart diseases. Recent studies have demonstrated that elevated serum BNP levels predict the first cardiovascular events and death in the general population. In addition, it has been reported that BNP measured before major surgery can be used as a predictor of postoperative cardiac complications.

This prospective observational case-control study aims to compare the cardiac effects of general and neuraxial anaesthesia in consideration of BNP values in lower limb surgery, the hemodynamic changes between two groups perioperatively, and the frequency of postoperative adverse events. 
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