منابع مشابه
Cerebral arteriovenous shunts re-examined.
Cerebral A rteriovenous Shunts Re-examined • Cerebral arteriovenous (A-V) shunts have been described in some histological studies, but their existence has been denied in others. Previous attempts to detect the presence and amount of A-V shunting using radioactive microspheres have suggested that large amounts of blood could bypass cerebral capillaries in this fashion. A reappraisal seemed indic...
متن کاملCerebral arteriovenous fistulas induced by dural arteriovenous shunts.
Dural arteriovenous shunts and pial arteriovenous fistulas are uncommonly associated. Their etiology, pathogenesis, and natural history are still unclear and are likely different. We present three cases of high-flow dural arteriovenous shunts associated with pial arteriovenous fistulas and discuss their pathogenesis, anatomic association, and angioarchitecture. We propose that venous steal effe...
متن کاملThe Demonstration of Pulmonary Arteriovenous Shunts
The evidence for existence of arteriovenous shunts in the normal human lung is strong but necessarily indirect. Simultaneous measurements of oxygen tension in alveolar air and in arterial blood consistently show a degree of venous admixture in both normal and abnormal subjects (1), but no information has been obtained about the path taken by this unventilated blood. The passage of small glass o...
متن کاملNoncavernous arteriovenous shunts mimicking carotid cavernous fistulae.
PURPOSE The classic symptoms and signs of carotid cavernous sinus fistula or cavernous sinus dural arteriovenous fistula (AVF) consist of eye redness, exophthalmos, and gaze abnormality. The angiography findings typically consist of arteriovenous shunt at cavernous sinus with ophthalmic venous drainage with or without cortical venous reflux. In rare circumstances, the shunts are localized outsi...
متن کاملNatural history of dural arteriovenous shunts.
BACKGROUND AND PURPOSE Dural arteriovenous shunts with cortical venous reflux or drainage may cause neurological symptoms and death with or without intracranial hemorrhage. Present knowledge about the natural history of these lesions is limited, however. We investigated the incidences of intracranial hemorrhage, progressive dementia syndrome, and death in patients diagnosed in our neurovascular...
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ژورنال
عنوان ژورنال: Stroke
سال: 1972
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.3.5.592