Skip to main content
OpenTrials
Completed

NCT Number: NCT07470034

Effects of Diaphragm Release Technique on Sleep Quality and Respiratory Function in Coronary Artery Bypass Graft Patients

This study aims to investigate the effects of diaphragm relaxation technique on sleep quality and respiratory functions in patients who have undergone coronary artery bypass graft (CABG) surgery. Two groups will be formed in the study: one group will receive standard cardiac rehabilitation, while the other group will receive diaphragm relaxation technique in addition to this.

Throughout the study, patients' respiratory functions, sleep quality, respiratory muscle strength, and pain levels will be measured. These measurements will be taken from the patients...

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Coronary Artery Bypass Cardiac Rehabilitation

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sanko Unıversıty

Gaziantep, şehitkamil, 27500, Turkey (Türkiye)

About this study

This study is an interventional research investigating the effects of the diaphragm release technique on sleep quality and respiratory functions in patients undergoing minimally invasive coronary artery bypass graft (CABG) surgery. Participants will be assigned to either an intervention or a control group. Both groups will receive standard in-hospital cardiac rehabilitation, while the intervention group will additionally receive the diaphragm release technique during their hospital stay.

Data will be collected using standardized tools, including pulmonary function tests (spirometry), respiratory muscle strength measurements, the Pittsburgh Sleep Quality Index, and visual analog scales for pain assessment. Written informed consent will be obtained from all participants, and the study will be conducted at Gaziantep Sanko University Hospital Cardiovascular Surgery Unit in accordance with ethical committee approval.

The aim of this research is to develop a safe and effective method to improve respiratory health and quality of life in patients after cardiac surgery.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Age under 65 years
  • Undergoing minimally invasive coronary artery bypass graft (CABG) surgery
  • Hemodynamically stable
  • Ambulatory (able to walk)
  • Willing to participate in the study and provide written informed consent
  • Mini-Mental State Examination (MMSE) score ≥ 25

Exclusion criteria

  • History of cerebrovascular events (stroke, TIA)
  • Orthopedic problems preventing walking
  • Uncontrolled diabetes
  • Uncontrolled hypertension
  • Severe visual impairment
  • Other diseases limiting participation in exercise training (pulmonary, neurological, metabolic, etc.)
  • Verbal or auditory cooperation problems

Treatment and study plan

Intervention group

Other

Participants receive standard in-hospital cardiac rehabilitation plus diaphragm release technique. The diaphragm release is performed daily during the hospital stay for a minimum o

Control Group

Other

Participants receive standard in-hospital cardiac rehabilitation only, including breathing exercises, mobilization, and post-operative physiotherapy, without diaphragm release.

Primary outcomes

  1. Pulmonary Function (Spirometry)

    Time frame: 1 years

    FEV1/FVC ratio measured with a spirometer. Measurements are performed according to ATS/ERS guidelines.

  2. Sleep Quality (Pittsburgh Sleep Quality Index)

    Time frame: 1 years

    sleep latency and daytime dysfunction evaluated using the Pittsburgh Sleep Quality Index.

  3. Respiratory Muscle Strength (MIP/MEP)

    Time frame: 1 years

    Maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) measured using an oral pressure device to evaluate respiratory muscle strength.

  4. Pain Level (Visual Analog Scale)

    Time frame: 1 years

    Chest and incision site pain assessed using a 0-10 cm Visual Analog Scale (0 = no pain, 10 = worst pain imaginable). Measured during rest, activity, and night.

Sponsors and collaborators

Lead sponsor

Sanko University

Other

Registry information

Official study title

Effects of Diaphragm Release Technique on Sleep Quality and Respiratory Functions in Patients Undergoing Coronary Artery Bypass Graft Surgery

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Mar 13, 2026
Registry last updated
Mar 13, 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.

Related clinical trials

Published trials that share one or more normalized conditions with this study.