CABG, Valve Surgery
Conditions
Keywords
breathing exercises, cardiac surgery, lung function, postoperative complication, positive expiratory pressure
Brief summary
Hypothesis: Deep breathing exercises performed during the first two months after cardiac surgery, will improve pulmonary function and patient-perceived quality of recovery. Specific aim: To evaluate the effectiveness of breathing exercises performed with a mechanical device for positive expiratory pressure during the first two months after cardiac surgery compared to a control group performing no breathing exercises. Design: A prospective, randomized, controlled two-center study.
Detailed description
Contribution: The study will be taken place at two University hospitals in Sweden. Uppsala university hospital (PhD, Registered physical therapist (RPT)) Margareta Emtner and RPT Charlotte Urell) and Örebro university hospital; (Elisabeth Westerdahl and RPT Marcus Jonsson). Time planning: Application to the Research Ethics Committee april 2007. Data collection 2007-2011. Statistical analysis and manuscript writing 2011.
Interventions
OTHERBreathing exercises
On the fourth postoperative day the patients are randomly assigned to a Treatment group continuing to perform deep breathing exercises for 2 months postoperatively and to a Control group who will perform no breathing exercises after the third postoperative day. Patient management is otherwise similar in the groups. The patients in the Deep breathing group will be instructed to perform breathing exercises (3 x 10 deep breaths) 5 times a day (document compliance) during the two postoperative months. A Positive expiratory pressure (PEP) device PEP ventil, System 22 (Rium Medical, Täby, Sweden) is used to create an expiratory resistance of +10 cm H2O.
Sponsors
The Swedish Research Council
Örebro County Council
Uppsala University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* A sample of 360 adults (\>18 years) patients undergoing cardiac surgery at the two University hospitals are invited to participate in the study. * Type of cardiac surgery included will be Coronary artery bypass graft surgery (CABG) with saphenous vein grafts and/or internal mammary artery graft, valve surgery or combinations of CABG and valve surgery.
Exclusion criteria
* Patients who have an emergency operation, previous cardiac or lung surgery, renal dysfunction requiring dialysis or are unable to communicate in Swedish will not be included. * Patients who requires more than 24 hours respirator treatment, reintubation, reoperation, sternum instability/infection or develop a neurological, mental or haemodynamic complication that affects the patients' ability to collaborate, will be excluded.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Lung function measured as Forced expiratory volume in 1 second (FEV1) | Two months after surgery | Spirometry is performed preoperatively and 2 months after surgery at the Departments of Clinical Physiology. A Jaeger MasterScreen Pulmonary functiontest (PFT)/Bodybox will be used at the University hospitals in Uppsala and Örebro. The medical laboratory technologists are blinded to the patient's treatment allocation. Static and dynamic lung volumes will be measured. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Postoperative quality of recovery | Two months postoperatively | Physical activity, postoperative pain, day of discharge, signs of pneumonia or pulmonary comlications will be noted. Patient-perceived quality of recovery will be assessed using a translated version of a recently validated quality of recovery score (QoR-40) designed to measure the patient's health status after surgery and anaesthesia. The SF (short form) -36 (first version) will be used for assessment of quality of life aspects. |
Countries
Sweden
Outcome results
None listed