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Abstract
Objective: To investigate the usefulness of eyeball pressure testing (EP) as an indicator for impending serious bradyarrhythmias in patients with Guillain-Barre syndrome (GBS) and its relationship to motor disability. Background: Autonomic dysfunction is a common complication in GBS and accounts for a significant number of deaths. Serious bradyarrhythmias are thought to occur only in severe cases but are difficult to predict. Methods/Design: In 13 consecutive patients with GBS aged 29 to 70 years, 156 EP (6 to 19 per patient) were done serially for up to 1 year. Bilateral moderate pressure was manually applied and sustained for 25 seconds or until abnormal bradycardia developed, defined as heart rate below 40 beats per minute. Disability was graded by a score from 0 to 5 (DS). Results: Four of 13 patients (DS 2/2/3-4/5) showed abnormal sensitivity to EP at least once. In two of them, vagal overreactivity could be demonstrated repeatedly, which gradually resolved within 4 and 10 days. In one patient with a rapid progressive course requiring early cardiopulmonary resuscitation, a highly abnormal EP could be recorded until 1 day after heart arrest. Another patient (DS 3-4) with abnormal EP required cardiac pacing twice because of significant bradycardia. The only other event necessitating pacing occurred in a severely disabled patient (DS 5-4) who never showed abnormal EP. Conclusions: Vagal overreactivity could be demonstrated in approximately 30% of our patients. It was not restricted to severe motor impairment and was also present in mild-to-moderately disabled patients. In this regard, EP may be a simple and useful bedside test to indicate an increased risk of developing serious bradyarrhythmias in patients with GBS.
NEUROLOGY 1996;47: 102-108
- Copyright 1996 by Advanstar Communications Inc.
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