Breath and Air Stacking on Respiratory Mechanics in Tracheostomized Patients

Not Applicable

Completed

• Conditions: Lung Infection; Mechanical Ventilation
• Interventions: Procedure: Air Stacking; Procedure: Breath Stacking

• Registration Number: NCT04012489
• Lead Sponsor: Brazilian Institute of Higher Education of Censa

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

Detailed Description

Not available

Study Timeline

• Study Start: 2018-02-25
• Primary Completion: 2018-10-18
• Study Completion: 2019-05-14
• Status Verified: 2019-07
• Study First Submitted: 2019-07-04
• Study First Submitted QC: 2019-07-04
• Last Update Submitted: 2019-07-04
• Study First Posted: 2019-07-09
• Last Update Posted: 2019-07-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Air Stacking	Air Stacking	Air 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.
Breath Stacking	Breath Stacking	Breath 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.

Primary Outcome Measures

Name	Time	Method
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.
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.

Trial Locations

Locations (1)

Luciano M Chicayban; 🇧🇷 Campos Dos Goytacazes, RJ, Brazil