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CTRI Number  CTRI/2025/10/096538 [Registered on: 28/10/2025] Trial Registered Prospectively
Last Modified On: 27/10/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   A Prospective Observational Study 
Study Design  Other 
Public Title of Study   A study comparing breathing and lung problems after heart bypass surgery done through the chest bone and through a small side opening in the chest 
Scientific Title of Study   A Prospective Observational Study to Comparing Postoperative Pulmonary Complications in Patients Undergoing Off-Pump CABG Vs Minimally Invasive Off-Pump CABG.  
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  ST ARISH 
Designation  Junior technologist (Respiratory care) 
Affiliation  Department of Cardiac Anesthesiology,Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116. 
Address  Department of Cardiac Anaesthesiology, Division of Cardiothoracic Anaesthesia, F6icu, Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116.

Chennai
TAMIL NADU
600116
India 
Phone  8778305120  
Fax    
Email  arishst2002@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr. Ranjith Karthekeyan.B 
Designation  Professor and Head of Department  
Affiliation  Department of Cardiac Anesthesiology,Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116. 
Address  Department of Cardiac Anesthesiology, Division of cardiothoracic Anaesthesia, F6ICU, Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116.

Chennai
TAMIL NADU
600116
India 
Phone  91 - 44 – 45928615(OFF)  
Fax    
Email  ranjithb73@gmail.com  
 
Details of Contact Person
Public Query
 
Name  ST ARISH 
Designation  Junior technologist (Respiratory care) 
Affiliation  Department of Cardiac Anesthesiology,Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116. 
Address  Department of Cardiac Anaesthesiology, Division of Cardiothoracic Anaesthesia, F6icu, Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116.

Chennai
TAMIL NADU
600116
India 
Phone  8778305120  
Fax    
Email  arishst2002@gmail.com  
 
Source of Monetary or Material Support  
Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116.  
 
Primary Sponsor  
Name  Dr Ranjith Karthekeyan B 
Address  Sri Ramachandra Institute of Higher Education and Research, No. 1, Ramachandra Nagar, Porur, Chennai – 600 116. 
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 
ST Arish  Sri Ramachandra institute of higher education and research   Department of Cardiac Anaesthesiology, Division of Cardiothoracic Anaesthesia, F6icu.
Chennai
TAMIL NADU 
8778305120

arishst2002@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Sri Ramachandra Institute of Higher Education and Research  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: I251||Atherosclerotic heart disease of native coronary artery,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Scheduled for elective off-pump CABG with general anesthesia, invasive mechanical ventilation, conventional median sternotomy or minimally invasive thoracotomy. 
 
ExclusionCriteria 
Details  1.Patients were excluded in case of emergent or redo surgeries
2.Patients with history of COPD.
3.Patients with known pulmonary Hypertension
4.Patients with EF less than forty five percentage in Echocardiography
5.Patients with significant history of smoking addiction
6.Body mass index greater than thirty five kilograms per square meter
7.Patient Refusal 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Incidence and severity of postoperative pulmonary complications assessed using composite scoring, including Postoperative Atelectasis Severity Score, CURB-65 Severity Score, Ventilator Dependence Severity Score, Pleural Effusion Severity Score, and Asthma Severity Score (adapted for Bronchospasm), in patients undergoing Off-Pump CABG and Minimally Invasive Off-Pump CABG.  Assessed at twenty four, forty eight and seventy two hours. 
 
Secondary Outcome  
Outcome  TimePoints 
Time of extubation from completion of surgery,
Need for re-intubation,
Duration of ICU stay, Post extubation ABG(pao2/fio2 ratio,pH, PaCO2), number of grafts used. 
Assessed at twenty four, forty-eight, & seventy two hours. 
 
Target Sample Size   Total Sample Size="126"
Sample Size from India="126" 
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)   15/11/2025 
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="6"
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      
  Coronary artery bypass grafting is a standard surgical procedure for the management of coronary artery disease. Conventional off pump coronary artery bypass grafting performed through median sternotomy may be associated with postoperative pulmonary complications such as atelectasis, pneumonia, pleural effusion,. and respiratory failure. Minimally invasive off pump coronary artery bypass grafting performed through a small thoracotomy avoids sternotomy and may reduce postoperative pulmonary complications by improving respiratory mechanics and lowering systemic inflammatory response.

This prospective observational comparative study aims to compare the incidence of postoperative pulmonary complications between patients undergoing off pump coronary artery bypass grafting and those undergoing minimally invasive off pump CABG. Postoperative pulmonary complications will be evaluated using validate scoring systems including the postoperative atelectasis severity score, CURB sixty five severity score, ventilator dependence severity score, pleural effusion severity score, and asthma severity score adapted for bronchospasm.

Given the significant impact of postoperative pulmonary complications on patient outcomes and health care costs, this study seeks to provide evidence on whether minimally invasive off pump CABG offers superior pulmonary outcomes, thereby guiding surgical decisions making in patients undergoing coronary revascularization.
 
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