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NCT Number: NCT07405333

Effect of Coughing Exercises Versus Incentive Spirometry on Respiratory Function and Recovery in Children After Cardiac Surgery.

This study examines the effects of coughing exercises and incentive spirometry (IS) on lung function and recovery in children who undergo heart surgery. The main goals are to see:

How coughing exercises and IS affect breathing and lung function after surgery? How these exercises influence overall recovery after surgery? Children who participate will be randomly assigned to one of three groups: coughing exercises, IS, or standard care. Those in the exercise groups will perform their assigned breathing exercises every 3 hours for the first 3 days after surgery. Daily check-ups will be conducted to monitor their progress, lung function, and oxygen levels.

The study will measure breathing ability, oxygen levels, and recovery milestones to find out which method is most effective in preventing lung complications and helping children recover faster.

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Key information

Age range

6 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Ibn Al-Bitar Specialized Hospital for Cardiac Surgery, Baghdad, Baghdad Governorate, Iraq

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About this study

This clinical trial evaluates the effects of coughing exercises and incentive spirometry (IS) on postoperative respiratory outcomes and recovery in children undergoing elective cardiac surgery with cardiopulmonary bypass.

The study aims to answer:

How do coughing exercises and IS influence lung function and breathing after surgery? How do they affect overall recovery, including physical comfort, oxygenation, and prevention of pulmonary complications?

Eligible children aged 6 to 18 years will be randomly assigned to one of three groups:

Coughing exercises group Incentive spirometry group Standard care group Children in the intervention groups will perform the assigned exercises every 3 hours for the first 3 days after surgery. All participants will receive daily monitoring, including vital signs, oxygen saturation, lung function assessment, and observation of postoperative recovery indicators such as feeding tolerance and mobility.

The study will assess primary outcomes such as postoperative respiratory function using a standardized respiratory score, and secondary outcomes including postoperative recovery indicators (quality of recovery scores), incidence of pulmonary complications, and length of stay in the pediatric intensive care unit (ICU).

This research will help identify the most effective method for improving respiratory outcomes, reducing complications, and supporting faster recovery in children after cardiac surgery.

Who can participate

Healthy volunteers accepted: No

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

Inclusion Crit

  • Children aged 6 to 18 years scheduled for elective cardiac surgery.
  • Postoperative extubation within 24 hours and judged clinically stable to begin respiratory therapy.
  • Hemodynamically stable.

Exclusion criteria

  • Pre-existing moderate-to-severe chronic lung disease requiring baseline oxygen therapy.
  • Neuromuscular disorders significantly impairing cough/inspiratory effort.
  • Emergency surgery, ongoing major bleeding.
  • Prolonged mechanical ventilation >72 hours or tracheostomy on admission.

Treatment and study plan

Coughing Exercises

Behavioral

participants will receive structured postoperative coughing exercises supervised by trained healthcare professionals. The intervention includes instruction on effective deep breathing followed by directed coughing to enhance airway clearance and prevent secretion retention. Exercises will be performed every 3 hours for three consecutive days after cardiac surgery, in addition to standard postoperative care.

Incentive spirometry

Device

participants will perform postoperative incentive spirometry using a standard incentive spirometer under professional supervision. Children will be instructed to perform slow, deep inspirations with visual feedback to promote lung expansion and alveolar recruitment. The intervention will be conducted 15 times every 3 hours for three days after surgery, alongside standard postoperative care.

Standard Postoperative Care

Other

Participants will receive routine postoperative care according to institutional protocols following cardiac surgery. This includes standard medical and nursing management such as oxygen therapy, pain control, monitoring of vital signs, and mobilization as tolerated, without additional structured respiratory physiotherapy interventions.

Primary outcomes

  1. Respiratory Function Score.

    Time frame: Baseline, 1 hour after intervention, 3 hours, 6 hours, 24 hours, 48 hours, and 72 hours.

    A composite postoperative respiratory function score assessed using standardized pediatric respiratory severity score, including respiratory rate (breaths/min), oxygen saturation measured by pulse oximetry (SpO₂, %), presence of wheezing (yes/no), use of accessory respiratory muscles (yes/no), and feeding tolerance. Higher scores indicate better respiratory function.

Secondary outcomes

  1. Postoperative Recovery Indicators Assessed by Clinical and Functional Parameters

    Time frame: Baseline, postoperative day 1, and postoperative day 7

    Postoperative quality of recovery assessed using the Pediatric Quality of Recovery (PQoR) scale, which evaluates postoperative pain, comfort, emotional status, physical activity, and feeding tolerance through age-appropriate assessment and caregiver reporting. Higher scores indicate better postoperative recovery.

  2. Length of Intensive Care Unit (ICU) Stay

    Time frame: From ICU admission after surgery until ICU discharge, up to postoperative day 14

    The duration of stay in the pediatric intensive care unit following cardiac surgery, calculated in days from ICU admission to ICU discharge based on hospital medical records..

  3. Arterial Blood Gas (ABG) Parameters

    Time frame: Baseline (prior to intervention) and 24, and 48 hours after intervention

    Arterial blood gas analysis will be used to evaluate changes in oxygenation and ventilation status following the cough exercise and incentive spirometry intervention. The measured parameters include partial pressure of oxygen (PaO₂), partial pressure of carbon dioxide (PaCO₂), bicarbonate (HCO₃-), and oxygen saturation (SaO₂). Measurements will be obtained using standard arterial sampling procedures and analyzed according to hospital laboratory protocols.

  4. postoperative complications

    Time frame: From the first postoperative day until hospital discharge (up to 7 postoperative days).

    Assessment of postoperative complications among pediatric patients following cardiac surgery, including atelectasis, pneumonia, pleural effusion, pneumothorax, respiratory distress, and others during the postoperative period.

Study contacts

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

rusul khalid khadim, MSc

CONTACT

[email protected]

96407702612183

Sponsors and collaborators

Lead sponsor

University of Baghdad

Other

Registry information

Official study title

Effect of Coughing Exercises Versus Incentive Spirometry on Respiratory Outcomes and Postoperative Recovery Among Children Undergoing Cardiac Surgery.

Acronym: CEXIS

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Feb 12, 2026
Registry last updated
May 12, 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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