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a graft configuration was 50% in their series (2 of 4). The authors postulate that the well-known tendency for Dacron to dilate over time may be accentuated by the presence of an endograft. They suggest oversizing the endograft 20% and a proximal landing zone with at least 4 cm of overlap when the graft is landed in Dacron.

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l-Eburnamonine - 16-oxoeburnane – assumes experimental cerebral ''oxygenator'' and antihypoxic properties which appear more pronounced than those of vincamine. In anesthetized dogs, l-eburnamonine increases the cerebral oxygen supply and the cerebral oxygen consumption, without cerebral vasodilation; l-eburnamonine improves the cerebral capillary circulation, as observed on the rheoencephalogram. l-Eburnamonine inhibits the effects of hypobaric hypoxia in mice (increase of survival time) and in rats (inhibition of amnesic effects of hypoxia). l-Eburnamonine decreases the electroencephalographic consequences of the acute and iterative asphyxic anoxia in curarized rats and, by means of the protection of the cerebral cortex, inhibits the postischemic increase of thalamic somesthetic evoked potentials in curarized cats. Further studies are necessary to precise the mechanisms involved in these ''cerebral protective'' properties of l-eburnamonine.

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