Can bedside assessment reliably exclude aspiration following acute stroke?

Area of Science:

• Neurology
• Clinical Medicine
• Swallowing Disorders

Background:

• Aspiration following acute stroke is a significant concern, potentially leading to pneumonia and poor outcomes.
• Early and accurate identification of dysphagia (swallowing difficulties) is crucial for patient management.

Purpose of the Study:

• To evaluate the diagnostic accuracy of bedside swallowing assessments in identifying aspiration in acute stroke patients.
• To determine if bedside assessments can reliably exclude the risk of aspiration.

Main Methods:

• A prospective study involving consecutive acute stroke patients admitted within 24 hours.
• Bedside swallowing assessments performed by doctors and speech and language therapists using a standardized proforma.
• Videofluoroscopy (VFSS) used as a reference standard within 3 days of admission.

Main Results:

• Videofluoroscopy identified aspiration in 21% of patients, with 10 cases missed by bedside assessment.
• Speech and language therapist bedside assessment showed low sensitivity (47%) and negative predictive value (85%) for aspiration.
• Optimized bedside assessment elements (weak cough, altered consciousness) improved sensitivity to 75% but reduced specificity to 72%.

Conclusions:

• Standard bedside swallowing assessments lack sufficient sensitivity to reliably exclude aspiration in acute stroke.
• Concerns exist regarding videofluoroscopy as the definitive gold standard for aspiration detection.
• Further research is needed to clarify the role of aspiration and bedside assessments in predicting stroke complications and outcomes.