Incentive Spirometry Versus Inspiratory Muscle Training After Coronary Artery Bypass Grafting (IS/ IMT)

January 20, 2026 updated by: Eman Abdelmohsen Ismail Hassan, Cairo University

Effect of Incentive Spirometry Versus Inspiratory Muscle Training on Arterial Blood Gases After Coronary Artery Bypass Grafting

This study will be conducted to compare between incentive spirometry verses inspiratory muscle training preoperatively on (ABG) after coronary artery bypass graft surgery.

Is there any significant difference of preoperative incentive spirometry verses inspiratory muscle training on Arterial blood gases (ABG) after coronary artery bypass graft surgery?

Participants will:

Group A (incentive spirometry group ) Group B (Inspiratory muscle trainer group ) for 5 days before operative Group C (control group) and group a , b will have routinely postoperative

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

45

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Egypt
    • Alsharqia
      • Zagazig, Alsharqia, Egypt, 44519
        • Zagazig University Hospitals
        • Contact:
          • principle investigator
          • Phone Number: +200552304832
          • Email: info@zu.edu.eg

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • 45 male patients will be included in this study.
  • Patients with age from 50 to 60 years old (undergoing coronary artery bypass graft surgery) through median sternotomy.
  • Their body mass index from 25 to 29.9 kg/m2
  • Patients will be alert and able to follow instruction.

Exclusion Criteria:

  • Who are expected not to be able to conduct or comply with IS and IMT.
  • Patients with cognitive or neurological deficits.
  • Patients with coexisting acute or chronic respiratory disorders.
  • Patients unable to understand or show the proper use of the incentive spirometer and Inspiratory muscle training .
  • Patients who cannot be instructed or supervised to assure appropriate use of the device patients in whom cooperation is absent or patients unable to understand or demonstrate proper use of the devices (inspiratory muscle training and incentive spirometry).
  • Patients who are confused or delirious.
  • Patients undergoing any other surgery along with CABG.
  • Patients undergoing emergency CABG surgery.
  • Chronic obstructive pulmonary disease (COPD), asthma, restrictive lung disease, preoperative major chest infection e.g. pulmonary tuberculosis, chest deformities such as pectus carinatum, pectus excavatum, thoracolumbar scoliosis, diaphragmatic hernias diagnosed on history.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: IS
This group will include 15 patients, Incentive spirometry was utilized by the patient with ten breaths, six sets per day for a period of 10 min within patient tolerance in every session for five days with routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Device: Incentive spirometry
This group will include 15 patients, Incentive spirometry was utilized by the patient with ten breaths, six sets per day for a period of 10 min within patient tolerance in every session for five days with routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Other Names:
  • IS
Experimental: IMT
This group will include 15 patients, each session consisted of 30 minutes of inspiratory muscle training. The patients were trained to use an inspiratory threshold-loading device (Threshold Inspiratory Muscle Training) for five days with routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Device: Inspiratory muscle trainer
This group will include 15 patients, each session consisted of 30 minutes of inspiratory muscle training. The patients were trained to use an inspiratory threshold-loading device (Threshold Inspiratory Muscle Training) for five days with routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Other Names:
  • IMT
Active Comparator: Control group
15 patients will receive for 5 days routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Other: Routine physical therapy
15 patients will receive for 5 days routinely physical therapy program (education and explanation) preoperatively, And postoperatively treatment (breathing treatment, deep-breathing applications, guided coughing, early mobilization).
Other Names:
  • Control group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Arterial Blood gas Parameters (PaO2 and SaO2)
Time Frame: Baseline 5 days pre-surgery , Immediately after the surgery within 48 hours , and through study completion an average of 8 days.
Assessment of arterial oxygenation changes by measuring PaO2 and SaO2 . data will be collected at Baseline pre-surgery (5 days ) , Immediately after the surgery (within 48 hours) , and through study completion an average of 8 days.to evaluate the recovery trend and the effectiveness of respiratory interventions.
Baseline 5 days pre-surgery , Immediately after the surgery within 48 hours , and through study completion an average of 8 days.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Atelactasis
Time Frame: Baseline 5 days pre-surgery, Immediately after the surgery within 48 hours, and through study completion an average of 8 days.
Assessment of lung collapse using chest X-ray and CT or clinical findings.
Baseline 5 days pre-surgery, Immediately after the surgery within 48 hours, and through study completion an average of 8 days.
Functional capacity (2- minute walk test)
Time Frame: Baseline 5 days pre-surgery, and through study completion an average of 8 days.
measuring the maximum distance a patient can walk on a flat surface in 2-minutes to evaluate functional exercise capacity.
Baseline 5 days pre-surgery, and through study completion an average of 8 days.
Physical function ICU test - scored (PFIT-s)
Time Frame: Immediately after the surgery within 48 hours.
Assessment of physical function in the ICU through four components ( sit -to- stand, marching, shoulder flexion, and knee extension ) Scored (0 - 10).
Immediately after the surgery within 48 hours.
Mechanical Ventilation duration
Time Frame: from the end of surgery until successful extubation .
the total number of hours the patient required mechanical ventilation support after CABG surgery
from the end of surgery until successful extubation .

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cairo University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

February 1, 2026

Primary Completion (Estimated)

February 1, 2027

Study Completion (Estimated)

March 1, 2027

Study Registration Dates

First Submitted

January 6, 2026

First Submitted That Met QC Criteria

January 20, 2026

First Posted (Actual)

January 26, 2026

Study Record Updates

Last Update Posted (Actual)

January 26, 2026

Last Update Submitted That Met QC Criteria

January 20, 2026

Last Verified

December 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • P.T.REC/012/006065

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

data is available with a corresponding offer on reasonable request

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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