Lung Infection, Mechanical Ventilation
Conditions
Keywords
Physical Therapy Modalities, Respiratory Care Units, Respiratory Mechanics
Brief summary
The researchers hypothesized that the aid of the resuscitator by the technique Air Stacking increase lung volume, promoting increased lung compliance and improvement of the ventilatory pattern. In addition, Air Stacking does not depend on patient collaboration. The objective of this study was to compare the effects of breath stacking and air stacking techniques on respiratory mechanics and ventilatory pattern in patients admitted to the ICU
Interventions
PROCEDUREBreath Stacking
Patients were connected to a unidirectional valve coupled to artificial airway (tracheostomy), with bacteriological filter. The ventilator was coupled to the unidirectional valve to measure inspiratory volume mobilized in each cycle and a connection to adapt a manometer. The patient performed successive inspirations for a maximum period of 30 seconds or until unidirectional valve opening or volume increase was observed for 2 consecutive efforts. Ten cycles of the technique were performed, with an interval of 30 seconds.
PROCEDUREAir Stacking
The same system of monitoring and adaptation of the ventilometer and manometer was carried out. A manual resuscitator coupled to a unidirectional valve was used, both connected to the tracheostomy, with a filter interface. Slow and successive inspirations were performed through slow compression of the resuscitator until the maximum inspiratory pressure reached 40 cmH2O. Ten cycles of the technique were performed, with an interval of 30 seconds.
Sponsors
Brazilian Institute of Higher Education of Censa
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Patients without mechanical ventilation for more than 72 hours * Mucus hypersecretion (defined as the need for suctioning \< 2-h intervals)
Exclusion criteria
* bronchospasm. * Pleural effusion or pneumothorax undrained. * Bronchopleural or tracheoesophageal fistula. * Neuromuscular disease.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Static compliance of respiratory system | Baseline (before) and immediately after Breath Stacking or Air Stacking | Compliance was assessed through the occlusion maneuver at the end of inspiration, considering tidal volume, plateau pressure and PEEP. Three measurements were taken at each moment, the mean being used. |
| Total Resistance of respiratory system | Baseline (before) and immediately after Breath Stacking or Air Stacking | The total resistance of the respiratory system was evaluated through the occlusion maneuver at the end of the inspiration, considering the resistive pressure, measured by the difference between the maximum plateau pressure. Three measurements were taken at each moment, the mean being used. |
Countries
Brazil
Outcome results
None listed