医学
灌注
血流动力学
动静脉畸形
脑出血
颅内动静脉畸形
水肿
放射科
心脏病学
内科学
血管造影
脑血管造影
蛛网膜下腔出血
作者
Brad E. Zacharia,Samuel S. Bruce,Geoffrey Appelboom,E. Sander Connolly
标识
DOI:10.1016/j.nec.2011.09.005
摘要
Arteriovenous malformations (AVMs) are vascular lesions characterized by direct connections between feeding arteries and draining veins without an intervening capillary network. Two hypotheses, normal perfusion pressure breakthrough (NPPB) and occlusive hyperemia, prevail in the literature regarding the occasional development of hemorrhage and edema following AVM resection. The NPPB hypothesis was introduced in 1978. Since the occlusive hyperemia hypothesis was first postulated in 1993, however, a debate has persisted within the cerebrovascular community concerning which hypothesis better explains the complications of edema and hemorrhage seen after AVM resection. Recent advances in cerebrovascular imaging and hemodynamic analysis have allowed a better evaluation of intracerebral changes following AVM resection. It is likely that these 2 hypotheses are not mutually exclusive and perhaps exist in a spectrum of hemodynamic alteration following AVM resection.
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