Sensitivity and Specificity of the Yale Swallow Protocol in Recently Extubated Patients

Area of Science:

• Critical Care Medicine
• Neurology
• Otolaryngology

Background:

• Aspiration is a significant risk for recently extubated patients, potentially leading to pneumonia and other complications.
• Accurate detection of aspiration is crucial for timely intervention and improved patient outcomes.

Purpose of the Study:

• To evaluate the sensitivity and specificity of the Yale Swallow Protocol (YSP) for detecting aspiration in patients recently extubated from mechanical ventilation.
• To identify patient factors associated with YSP failure and false-negative results.

Main Methods:

• A prospective study involving 154 recently extubated patients who underwent both the YSP and fiberoptic endoscopic evaluation of swallowing (FEES) in random order.
• YSP failure was defined by specific criteria (interrupted drinking, immediate cough). FEES was used as the gold standard to assess aspiration, rated by the Penetration Aspiration Scale.

Main Results:

• The YSP demonstrated suboptimal sensitivity (75%) and specificity (61%) in detecting aspiration.
• Fifty-seven percent of patients failed the YSP, and 50% aspirated on FEES. Older age and female sex were associated with YSP failure.
• False negatives on the YSP were more common in patients with respiratory conditions and those with larger endotracheal tube sizes.

Conclusions:

• The Yale Swallow Protocol has limitations in accurately identifying aspiration in recently extubated patients.
• Further investigation into predictors of false negatives is necessary to enhance the YSP's utility in this high-risk group.