Transcutaneous electrical diaphragmatic stimulation in mechanically ventilated patients: a randomised study

Area of Science:

• Critical Care Medicine
• Respiratory Physiology
• Rehabilitation Medicine

Background:

• Mechanical ventilation poses a risk of diaphragmatic dysfunction.
• Limited effective methods exist to mitigate this risk.
• Transcutaneous electrical stimulation of the diaphragm (TEDS) is an emerging intervention.

Purpose of the Study:

• To assess if daily TEDS prevents diaphragm dysfunction in patients weaning from mechanical ventilation.
• To evaluate TEDS's impact on respiratory muscle strength and extubation success.

Main Methods:

• A controlled trial comparing daily TEDS with sham stimulation.
• Ultrasound measurements of diaphragm thickening fraction during spontaneous breathing trials.
• Assessment of maximal inspiratory pressure (MIP) and peak cough flow (PEF).

Main Results:

• No significant difference in diaphragm thickening fraction between TEDS and sham groups (67% vs 54%).
• Similar maximal inspiratory pressure and peak cough flow in both groups.
• No difference in extubation failure rates between the TEDS and sham groups.

Conclusions:

• TEDS did not prevent diaphragm dysfunction in this patient cohort.
• TEDS did not improve inspiratory muscle strength.
• Current evidence does not support TEDS for preventing diaphragm dysfunction during mechanical ventilation weaning.