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CTRI Number  CTRI/2026/02/103350 [Registered on: 09/02/2026] Trial Registered Prospectively
Last Modified On: 06/02/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Physiotherapy (Not Including YOGA) 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A Study to See Whether Lung Flute Helps Improve Clear Chest Mucus and Breathing After Heart Valve Surgery  
Scientific Title of Study   Effect of lung flute on airway clearance and respiratory function in cardiac valve replacement surgery: A Randomized controlled trial. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Gogula Mohana Sreya 
Designation  Student 
Affiliation  KLE Institute of Physiotherapy 
Address  KLES Dr. Prabhakar Kore Hospital and MRC, Advanced Physiotherapy Centre Cardiovascular and Pulmonary Physiotherapy Department Room No. 6, Nehru Nagar, Belagavi, Karnataka-590010

Belgaum
KARNATAKA
590010
India 
Phone  8520827852  
Fax    
Email  gogulamohanasreya@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Varun Naik 
Designation  Associate Professor, Department of Cardiovascular and Pulmonary Physiotherapy 
Affiliation  KLE Institute of Physiotherapy 
Address  KLES Dr. Prabhakar Kore Hospital and MRC, Advanced Physiotherapy Centre Cardiovascular and Pulmonary Physiotherapy Department Room No. 6, Nehru Nagar, Belagavi, Karnataka-590010

Belgaum
KARNATAKA
590010
India 
Phone  9986497065  
Fax    
Email  varunnaik@klekipt.edu.in  
 
Details of Contact Person
Public Query
 
Name  Gogula Mohana Sreya 
Designation  Student 
Affiliation  KLE Institute of Physiotherapy 
Address  KLES Dr. Prabhakar Kore Hospital and MRC, Advanced Physiotherapy Centre Cardiovascular and Pulmonary Physiotherapy Department Room No. 6, Nehru Nagar, Belagavi, Karnataka-590010

Belgaum
KARNATAKA
590010
India 
Phone  8520827852  
Fax    
Email  gogulamohanasreya@gmail.com  
 
Source of Monetary or Material Support  
KAHER Institute of Physiotherapy, Nehru nagar, Belagavi-590010 
 
Primary Sponsor  
Name  GOGULA MOHANA SREYA 
Address  KLES Dr. Prabhakar Kore Hospital and MRC, Advanced Physiotherapy Centre Cardiovascular and Pulmonary Physiotherapy Department Room No. 6, Nehru Nagar, Belagavi, Karnataka-590010 Belgaum KARNATAKA 590010 India 
Type of Sponsor  Other [Self sponsored] 
 
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 
Gogula Mohana Sreya  KLE Institute of physiotherapy  KLES Dr. Prabhakar Kore Hospital and MRC, Advanced Physiotherapy Centre, Room No. 39 Department of Cardiovascular and Pulmonary Physiotherapy, Room No.6, Nehru Nagar, Belagavi, Karnataka-590010 Belgaum KARNATAKA
Belgaum
KARNATAKA 
8520827852

gogulamohanasreya@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Research and Ethics Committee, KAHER Institute of Physiotherapy, Belagavi.  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Post Valve Replacement surgery 
Patients  (1) ICD-10 Condition: I39||Endocarditis and heart valve disorders in diseases classified elsewhere,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Conventional chest physiotherapy  Active cycle of breathing technique(ACBT) Deep breathing exercises Segmental breathing Diaphragmatic breathing Incentive spirometry Patient education Frequency: Twice daily sessions for 5 days with total session for 30 minutes . 
Intervention  Lung flute  Device: Lung Flute Frequency: Twice daily sessions for 5 days Duration: 10 minutes per session. Total session takes 30 minutes Session starts from day 3 till day 7. Procedure: Patient seated comfortably and Instructed to exhale through the Lung Flute. Followed by coughing or huffing to expel loosened secretions. Combined with Acute Phase cardiac rehabilitation components: deep breathing, limb exercises, incentive spirometry, and Patient education. 
 
Inclusion Criteria  
Age From  40.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  Participants who underwent valve replacement surgery.
Willingness to participate in the intervention and provide informed consent.
Individuals of both the genders aged between 40-70 years will be included in the study.
Hemodynamically stable. 
 
ExclusionCriteria 
Details  Participants who underwent CABG.
Postoperative complications such as re-intubation.
Systematic infection, Active tuberculosis, pleural effusion.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Not Applicable 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Sputum metrics(volume in ml and colour)
Respiratory function:Incentive spirometer, Pulse oximeter 
Sputum metrics:- Pre intervention day 1(baseline) and post intervention on day 5.
Respiratory function: Incentive spirometer, Pulse oximeter. will be measured all 5 days pre and post treatment. on day 1 pre intervention as a baseline.
 
 
Secondary Outcome  
Outcome  TimePoints 
New York Heart Association (NYHA) Functional Classification.  The outcome will be measured on day 1 pre intervention(baseline) & day 5 post intervention. 
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
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)   19/02/2026 
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   This randomized controlled trial aims to evaluate the effectiveness of the lung flute as an adjunct to conventional chest physiotherapy in improving airway clearance and respiratory function in patients undergoing cardiac valve replacement surgery. Post operative patients are at high risk of pulmonary complications such as atelectasis and retained secretions due to general anesthesia, mechanical ventilation, and reduced chest expansion, A total 40 hemodynamically stable patients aged 40-70 years will be recruited and randomly allocated into two groups: a control group receiving conventional chest physiotherapy and an experimental group receiving Lung flute along with standard postoperative care. Interventions will be administered twice daily during the acute postoperative phase. Outcome measures include sputum metrics(volume and color) , respiratory parameters assessed using incentive spirometer and pulse oximeter, and functional capacity measured by NYHA functional classification. The study aims to determine whether the lung flute provides additional benefits in enhancing airway clearance and respiratory recovery following valve replacement surgery. 
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