Inspiratory Muscle Training in the Intensive Care Unit: A New Perspective

Area of Science:

• Critical Care Medicine
• Respiratory Physiology
• Rehabilitation Medicine

Background:

• Prolonged mechanical ventilation (MV) can cause respiratory muscle weakness, particularly in sedated patients.
• Respiratory muscle training may prevent or reverse this weakness.
• Electronic inspiratory muscle training (EIMT) is a potential intervention for patients requiring MV.

Purpose of the Study:

• To assess respiratory and hemodynamic changes with EIMT in tracheostomized patients on MV.
• To compare EIMT with an intermittent nebulization program (INP) for these outcomes.

Main Methods:

• Pilot, prospective, randomized study in an ICU.
• Tracheostomized patients requiring MV were randomized to EIMT or INP.
• Two patients in the EIMT group were excluded due to hemodynamic instability.

Main Results:

• EIMT significantly increased maximal inspiratory pressure (MIP) post-training (P = 0.017).
• No significant hemodynamic changes were observed in the EIMT group.
• Ventilator weaning time was shorter in the EIMT group compared to the INP group (P = 0.0192).

Conclusions:

• EIMT is a safe intervention for mechanically ventilated patients.
• EIMT effectively increases MIP.
• EIMT shortens ventilator weaning time compared to INP.