Evaluating the Short-term Efficacy of Two Oscillation Techniques in Hypersecretive Mechanically Ventilated Patients

Condition(s) studied

Investigational drug(s) / intervention(s)

Oscillation and Lung Expansion: The OLE device (MetaNeb system) is a newer, noninvasive physiotherapy tool that combines mechanical and pharmacological interventions (aerosols) to help mobilize endobronchial secretions.

High-frequency chest wall oscillation: High-frequency chest wall oscillation (HFCWO) is an airway clearance technique that uses external forces applied to the chest via an inflatable vest connected to a device that generates vibrations at varying frequencies and pressures.

Study summary

Although mechanical ventilation (MV) is life-saving, it is associated with several complications. The establishment of an artificial airway impairs the cough reflex and mucociliary function, leading to the accumulation of secretions in the tracheobronchial tree. This increases the risk of pneumonia and lung atelectasis. Usual care for mechanically ventilated patients includes airway suctioning via the tracheostomy tube, which clears only a limited portion of the airway and is ineffective at removing peripheral airway secretions.

To address this, airway clearance guidelines recommend various airway clearance techniques (ACTs) for mechanically ventilated patients to enhance mucus removal. However, the lack of standardized, effective evaluation criteria makes selecting the optimal ACT a challenge.

Eligibility

Primary outcome measure(s)

• End-expiratory lung impedance (EELI) — at the end of treatment (T1) and at 1 hour (T2), 2 hours (T3), 4 hours (T4)

Trial sites (1)

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