Speech Therapy After Stroke and Illness: Swallowing and Communication

Speech Therapy After Stroke and Illness: Swallowing and Communication

Speech-language pathologists (SLPs) — commonly called speech therapists — address two critical areas after stroke, brain injury, or serious illness: safe swallowing and effective communication. Their work is often life-saving, particularly for patients with swallowing disorders who are at risk of aspiration pneumonia.

Dysphagia: Swallowing Disorders

Dysphagia (difficulty swallowing) is extremely common after stroke, affecting up to 65% of acute stroke patients. Left untreated, dysphagia leads to aspiration — food and liquid entering the airway — which can cause aspiration pneumonia, a leading cause of post-stroke death.

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Speech therapists evaluate swallowing function using:

  • Clinical swallowing evaluation: Bedside assessment of swallowing mechanics, voice quality, and signs of aspiration
  • Modified barium swallow study (MBSS): Videofluoroscopic imaging of swallowing with different food and liquid textures
  • Fiberoptic endoscopic evaluation of swallowing (FEES): Direct visualization of swallowing using a flexible endoscope

Based on findings, the SLP recommends appropriate diet texture levels (IDDSI framework: regular, minced, pureed) and liquid thickening if needed.

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Communication Disorders After Stroke

Aphasia

Aphasia is a language disorder caused by damage to language areas of the brain (typically the left hemisphere). It affects speaking, understanding, reading, and writing — but not intelligence. Speech therapy for aphasia uses structured language exercises, augmentative communication strategies, and family training.

Dysarthria

Dysarthria is a motor speech disorder causing slurred, slow, or unclear speech due to muscle weakness or incoordination. Unlike aphasia, the language system is intact — only the physical production of speech is affected. Treatment focuses on strengthening oral muscles and improving speech intelligibility.

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Voice Disorders and Cognitive Communication

SLPs also address voice disorders (hoarseness, vocal cord paralysis) and cognitive-communication deficits — memory, attention, problem-solving, and organization difficulties that affect daily communication after brain injury.

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