Neurocritical care
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Dysautonomia is a characteristic finding in Guillain-Barré syndrome (GBS). Sinus tachycardia, blood pressure instability, sustained hypertension or hypotension, cardiac arrhythmias, sweating abnormalities, gastrointestinal or urogenital symptoms, and neurogenic stunned myocardium have been previously described in patients with GBS. To our knowledge, increased intrapulmonary shunts in association with GBS have not yet been reported. ⋯ Intrapulmonary shunts in GBS may relate to sympathetic overactivation and should be anticipated in GBS patients with unexplained respiratory deterioration.