Natural History of Swallow Function during the Three-Month Period after Stroke

Area of Science:

• Neurology
• Gastroenterology
• Geriatrics

Background:

• Oropharyngeal dysphagia (PS-OD) is a frequent complication after stroke.
• PS-OD can impact patient recovery and increase risks for pneumonia and malnutrition.
• Understanding the natural history and recovery patterns of PS-OD is crucial.

Purpose of the Study:

• To investigate the natural history of post-stroke oropharyngeal dysphagia (PS-OD) from admission to three months post-stroke.
• To identify factors associated with the prevalence and development of PS-OD.
• To analyze spontaneous recovery rates and predictors in stroke patients with PS-OD.

Main Methods:

• Prospective study of 247 older post-stroke patients.
• Oropharyngeal dysphagia assessed using the volume-viscosity swallow test (V-VST) at admission and three months.
• Analysis of clinical, demographic, and neuroanatomical factors.

Main Results:

• PS-OD prevalence was high: 39.7% on admission and 41.7% at three months.
• Spontaneous recovery observed in 42.4% with unsafe swallow and 29.9% with ineffective swallow.
• 26% developed new ineffective swallow symptoms, linked to poor functional status and institutionalization.

Conclusions:

• PS-OD is a prevalent and dynamic condition post-stroke.
• Spontaneous recovery is associated with younger age and better functional status.
• Regular monitoring is essential to manage PS-OD and prevent complications.