Enhancing Swallowing Function in Tracheotomy Patients with Subglottic Oxygen Flow: A Randomized Self-Controlled...

Area of Science:

• Neurology
• Otolaryngology
• Rehabilitation Medicine

Background:

• Stroke patients with tracheotomies often experience dysphagia, increasing aspiration risk.
• Subglottic suction tubes are used in tracheostomies, but their effect on swallowing is not fully understood.
• Dysphagia management is crucial for recovery and preventing complications like pneumonia.

Purpose of the Study:

• To investigate the impact of continuous oxygen airflow through subglottic suction tubes on swallowing function in stroke patients with dysphagia.
• To compare swallowing outcomes under different oxygen airflow rates and conditions (cuff inflated, deflated, tube capped).

Main Methods:

• Randomized self-controlled cross-over study involving 20 stroke patients with tracheotomy-related dysphagia.
• Fiberoptic endoscopic evaluation of swallowing (FEES) assessed swallowing of thickened liquid under five conditions.
• Evaluated penetration-aspiration (PAS) and pharyngeal residue (YPR-SRS) scores.

Main Results:

• Subglottic oxygen airflow at 5 L/min and 7 L/min significantly reduced PAS scores compared to cuff deflation and tube capping.
• Oxygen airflow at 3 L/min also significantly lowered PAS scores versus cuff deflation (P < 0.01).
• Oxygen airflow at 5 L/min significantly reduced YPR-SRS scores compared to cuff deflation and tube capping (P < 0.01).

Conclusions:

• Continuous subglottic oxygen airflow through suction tubes enhances swallowing safety and efficiency in stroke patients with dysphagia.
• This intervention shows promise for widespread clinical application in managing tracheotomized patients.
• Optimizing airflow may be a key strategy for improving swallowing function post-stroke.