2022 Year in Review: Mechanical Insufflation-Exsufflation

Area of Science:

• Respiratory Medicine
• Pulmonary Physiology
• Medical Devices

Background:

• Airway clearance relies on effective coughing, often impaired in neuromuscular disorders and critical illness.
• Mechanical insufflation-exsufflation (MI-E) is a key technique for augmenting cough in patients with respiratory muscle weakness.
• MI-E use has expanded beyond neuromuscular disorders to include patients with intubation and mechanical ventilation.

Purpose of the Study:

• To review the current evidence and applications of mechanical insufflation-exsufflation (MI-E) for airway clearance.
• To identify factors influencing MI-E efficacy, including device settings and patient-specific conditions.
• To highlight areas for future research in optimizing MI-E therapy.

Main Methods:

• Literature review of studies on mechanical insufflation-exsufflation (MI-E) for airway clearance.
• Analysis of factors affecting peak expiratory flow during MI-E, such as pressure settings and interface.
• Evaluation of diagnostic tools like laryngoscopy and electrical impedance tomography for assessing MI-E effectiveness and patient response.

Main Results:

• MI-E is effective for airway clearance in various conditions causing respiratory muscle weakness.
• Optimal pressure and time settings for MI-E are not yet established.
• Laryngeal dysfunction can impede MI-E success; specialized assessments may help customize therapy.
• Evidence largely comes from small, adult-focused studies, limiting generalizability.

Conclusions:

• Mechanical insufflation-exsufflation (MI-E) is a valuable tool for airway clearance, particularly in respiratory muscle weakness.
• Further research is needed to determine optimal MI-E settings and its efficacy across diverse patient populations and clinical scenarios.
• Integrating advanced monitoring techniques may improve personalized MI-E treatment strategies.