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CTRI Number  CTRI/2024/12/078407 [Registered on: 20/12/2024] Trial Registered Prospectively
Last Modified On: 03/05/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Preventive
Process of Care Changes 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Incidence of Haemolysis during Cardiopulmonary Bypass on Adult Cardiac Surgeries 
Scientific Title of Study   A Pilot Randomized Controlled Trial on Incidence of Haemolysis during Cardiopulmonary Bypass on Adult Cardiac 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  D E Nirman Kanna 
Designation  Postgraduate Student 
Affiliation  Narayana Hrudayalaya Institute of Medical Sciences 
Address  Department of Clinical Perfusion, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Department of Clinical Perfusion, Narayana Institute Of Cardiac Sciences (NICS) No. 258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Bangalore
KARNATAKA
560099
India 
Phone  6382201618  
Fax    
Email  denirmankanna@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Varun Shetty 
Designation  Senior Consultant Cardiac Surgeon 
Affiliation  Narayana Institute of Cardiac Sciences 
Address  Department of Cardio-Thoracic and Vascular Surgery, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Department of Cardio-Thoracic and Vascular Surgery, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Bangalore
KARNATAKA
560099
India 
Phone  9880933801  
Fax    
Email  varun.shetty.dr@narayanahealth.org  
 
Details of Contact Person
Public Query
 
Name  Dr Varun Shetty 
Designation  Senior Consultant Cardiac Surgeon 
Affiliation  Narayana Institute of Cardiac Sciences 
Address  Department of Cardio-Thoracic and Vascular Surgery, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Department of Cardio-Thoracic and Vascular Surgery, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area
Bangalore
KARNATAKA
560099
India 
Phone  9880933801  
Fax    
Email  varun.shetty.dr@narayanahealth.org  
 
Source of Monetary or Material Support  
Department of Cardio-thoracic and Vascular Surgery, Department of Clinical Perfusion, Narayana Institute Of Cardiac Sciences (NICS) No.258 A Anekal Taluk Hosur Road Bommasandra Industrial Area, Bangalore, Karnataka-560099 
 
Primary Sponsor  
Name  D E Nirman Kanna 
Address  Narayana Hrudayalaya Institute of Medical Sciences, Bangalore. 258/A, Bommasandra Industrial Area , Anekal Taluk, Hosur Road Bangalore, Karnataka - 560099 
Type of Sponsor  Other [Self] 
 
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 
D E Nirman Kanna  Narayana Institute of Cardiac Sciences   Narayana Institute Of Cardiac Sciences 258 A Bhommasandra Anekal Taluk Bommasandra Industrial Area
Bangalore
KARNATAKA 
6382201618

denirmankanna@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Narayana Health Academic Ethics Committe  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: I20-I25||Ischemic heart diseases, (2) ICD-10 Condition: I71||Aortic aneurysm and dissection,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Control Group   1. Fluid drop method using IV set 2. Vacuum Assisted Venous Drainage Pressures more than -40mmHg and should not exceed than -80mmHg 3. Sucker range more than 0.65 lpm during the intra OP. 4. During Cardiopulmonary Bypass, Hematocrit 27%to 30% 5. If central cannulation done, the arterial line pressure above 170mmHg 6. If peripheral cannulation is done, the arterial line pressure 210mmHg 
Intervention  Interventional Group   1. Meniscus fall method (1 inch/ min) 2. Vacuum Assisted Venous Drainage Pressures -20mmHg to -40mmHg 3. Sucker range less than 0.65 lpm during the intra OP 4. During Cardiopulmonary Bypass, Hematocrit 23%to 27% 5. If central cannulation done, the arterial line pressure 120-160mmHg 6. If peripheral cannulation done, the arterial line pressure 150-200mmHg 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  75.00 Year(s)
Gender  Both 
Details  Adult Cardiac surgeries which require the use of cardiopulmonary bypass and CPB time more than 60mins. 
 
ExclusionCriteria 
Details  1. Patients with renal impairments
2. Patients with hemolytic disorders
3. Patients with pre-existing hemolysis
4. Patients with cyanotic heart disease
5. Cardiac surgeries with CPB duration exceeding 240 minutes
6. Cardiac surgeries using non-occlusive pumps
7. Cases requiring a return to CPB
8. Redo surgeries (especially Mechanical valve implanted cases)
9. Emergency CPB initiation
10. Patients unwilling to participate in the study
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   On-site computer system 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
Incidence of Hemolysis  Itra Operative (60mins after CPB ON) and Post Operative period (12hrs after CPB OFF) POD 0 
 
Secondary Outcome  
Outcome  TimePoints 
To delineate the risk factors that increase the incidence of hemolysis   Itra Operative (60mins after CPB ON) & Post Operative period (12hrs after CPB OFF) POD 0 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
Final Enrollment numbers achieved (Total)= "30"
Final Enrollment numbers achieved (India)="30" 
Phase of Trial   N/A 
Date of First Enrollment (India)   06/01/2025 
Date of Study Completion (India) 11/02/2025 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="0"
Months="2"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
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
Modification(s)  

BACKGROUND

The utilization of cardiopulmonary bypass (CPB) is nearly inevitable in cardiac surgery. Yet, it can lead to complications such as hemolysis, which is a significant factor in postoperative kidney injury and intestinal mucosal damage, possibly by reducing NO-bioavailability. Various factors influence hemolysis during CPB, including the method of venous drainage, occlusion settings, type of pump, CPB duration, arterial line pressure, vacuum-assisted Venous drainage (VAVD) pressure, suction devices, type of cardiac surgery, hematocrit (Hct), and patient comorbidities. However, established standards for reducing hemolysis from CPB are lacking.

AIM

The study aims to delineate the risk factors that increase the incidence of hemolysis and establish a safe range of parameters according to our protocol to prevent hemolysis during CPB procedures.

METHODOLOGY

Study area: Cardiac OT of NICS

Study population: Adult Cardiac surgery patients of NICS

Study design: Randomized Controlled Trial 

ETHICAL CLEARANCE

The study was approved by the scientific ethical committee and Narayana Health Ethics Committee (NHH/AEC-CL-2024-1306) and registered under the Clinical Trials Registry of India (CTRI) on 20th December 2024 (CTRI Number: CTRI/2024/12/078407).

Conclusion:

Our study concludes that strictly adhering to the study protocol in adult cardiac surgery patients undergoing CPB can help prevent hemolysis and improve patient outcomes by reducing complications associated with CPB-induced hemolysis. This applies to patients who have no renal impairments, no hemolytic disorders, and no pre-existing hemolysis, as well as those without cyanotic heart disease. Additionally, it is crucial that patients do not require a return to CPB, the surgery is not a redo procedure (particularly in cases involving mechanical valve implantation), and CPB is not initiated as an emergency.

 

 


 
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