Related Experiment Videos
Blink reflex in patients with Wallenberg's syndrome
N Vila1, J Valls-Solé, V Obach
1Departamento de Medicina, Universidad de Barcelona, Spain.
Journal of Neurology
|January 1, 1997
Summary
The blink reflex (BR) is often abnormal in Wallenberg
Area of Science:
- Neurology
- Neuroscience
Background:
- Wallenberg's syndrome (WS) involves incomplete understanding of its neural circuits.
- Studying the blink reflex (BR) in WS patients offers insights into physiopathology and clinical outcomes.
Purpose of the Study:
- To evaluate the blink reflex (BR) in patients diagnosed with Wallenberg's syndrome (WS).
- To assess the diagnostic and prognostic value of BR abnormalities in WS.
Main Methods:
- Blink reflex (BR) was assessed in 20 WS patients via electrical stimulation of the supraorbital nerve.
- Examinations were conducted within the first week of symptom onset, with follow-up for 10 patients over 3-12 months.
Main Results:
- Abnormal BR responses (absent or delayed) were observed in 15 out of 20 patients during the acute phase.
- BR typically normalized within a mean of 7 months, with most patients showing recovery.
- BR patterns did not predict early fatal complications.
Conclusions:
- The blink reflex (BR) is frequently impaired in acute Wallenberg's syndrome (WS).
- BR abnormalities tend to resolve over time, indicating neural plasticity.
- BR assessment is valuable for understanding WS pathophysiology but not for predicting mortality.