Respiratory Physiotherapy After Cardiac Surgery

Inspiratory Volume and Muscle Recruitment During Breath-stacking and Incentive Spirometry Techniques in Postoperative Cardiac Patients

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01513642

Enrollment

Registered

2012-01-20

Start date

2009-03-31

Completion date

2011-12-31

Last updated

2012-01-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Functional Disturbance Following Cardiac Surgery

Keywords

physiotherapy, cardiac surgery, breath Stacking

Brief summary

Although incentive spirometry is commonly used to avoid pulmonary complications in cardiac surgery patients, the breath-stacking technique has been proposed as an alternative to increase pulmonary volumes in the post-operative period. Objective: To compare inspiratory volume and electromyographic activity of respiratory muscles during breath stacking technique and incentive spirometry in patients undergoing cardiac surgery.

Detailed description

The purpose of the present study are: 1. to evaluate and compare the inspiratory volume during the course of Breath Stacking and Incentive Spirometry techniques in patients submitted to myocardial revascularization surgery. 2. to compare the electromyographic activity of the scalene, sternocleidomastoid (SCM) and diaphragm muscles during both techniques.

Interventions

BEHAVIORALBreath Stacking

To perform the BS maneuver, a silicone mask containing a one-way valve was attached to the patient's face. Once the mask was adjusted to allow only inspiration (the expiratory branch remained occluded), the patient was asked to make successive inspiratory efforts during 20 seconds.

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

50 Years to 70 Years

Healthy volunteers

Inclusion criteria

* patients submitted to myocardial revascularization surgery

Exclusion criteria

* cognitive impairment or incoordination to perform IS * face mask intolerance during BS * level of consciousness incompatible to perform IS * hemodynamic complications \[arrhythmia, intraoperative myocardial infarction, major blood loss (defined as a loss of ≥20% of total blood volume), mean arterial pressure \<70 mmHg and reduce cardiac output requiring the use of an intra-aortic balloon pump or vasoactive drugs) * intubation for more than 72 h after admission to the Intensive Care Unit * the need for reintubation.

Design outcomes

Primary

Measure	Time frame
Inspiratory volume and muscle recruitment during breath-stacking and incentive spirometry techniques in postoperative cardiac patients	Within 2 days after cardiac surgery

Countries

Brazil

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026