Journal of neurology
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Journal of neurology · Dec 2005
Comparative StudyIncreased incidence of jugular valve insufficiency in patients with transient global amnesia.
While transient global amnesia (TGA) is a clinically well defined disorder, its etiology is poorly understood. Cerebral venous hypertension and subsequent damage to hippocampal and diencephalic structures are among the discussed hypothetical causes. Using a direct method for the study of retrograde flow during a Valsalva maneuver, we determined whether jugular valve insufficiency contributes to cerebral venous hypertension in patients with TGA. ⋯ TGA is associated with an increase in the prevalence of jugular insufficiency. Valvular insufficiency may lead to increased venous pressure transmission during a Valsalva maneuver and thus contribute to venous ischemia in TGA. The association of valvular insufficiency and longer reflux times with the occurrence of a trigger event further suggests that cerebral venous congestion is an important etiological factor in transient global amnesia.
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Journal of neurology · Dec 2005
Comparative Study Clinical TrialPredictors of survival after severe dysphagic stroke.
Dysphagia is estimated to occur in up to 50% of the stroke neurorehabilitation population. Those patients with severe neurogenic oropharyngeal dysphagia (NOD) may receive feeding gastrostomy tubes (FGT) if noninvasive therapies prove ineffective in eliminating aspiration or sustaining adequate nutritional intake. Our aim was to quantify the recovery of swallowing function, and to identify variables predictive of survival after dysphagic stroke requiring FGT placement. ⋯ Severe dysphagia requiring FGT is common in patients with stroke referred for neurorehabilitation. Patients who had a FGT in place at the time of discharge from the stroke rehabilitation unit or aspirated during VSS were substantially more likely to have died by the time of follow-up compared to those who had had the FGT removed and had no signs of aspiration on VSS. However functional outcome measurements (FIM, FCM) including the cognitive function (attention, concentration etc.) could play an important role for prediction of swallowing regeneration and survival in neurorehabilitation. These findings may have practical utility in guiding physicians and speech language pathologists when advising patients and families about prognosis in stroke survivors with severe dysphagia.