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NCT Number: NCT07367945

Incentive Spirometry Versus Inspiratory Muscle Training 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

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Key information

Conditions

Coronary Artery Bypass Graft (CABG)

Age range

50 year–60 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Incentive spirometry

Device

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

Inspiratory Muscle Trainer

Device

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

Routine physical therapy

Other

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

Primary outcomes

  1. 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.

Secondary outcomes

  1. 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.

  2. 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.

  3. 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).

  4. 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

Study contacts

Contact information is provided by the study sponsor or research team.

Eman A Ismail

CONTACT

[email protected]

+201126821576

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Official study title

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

Acronym: IS/ IMT

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Jan 26, 2026
Registry last updated
Jan 26, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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