摘要
２０例老年人短暂性脑缺血发作（ＴＩＡ）末次发作后，平均２８±２１天做单光子发射计算机断层扫描（ＳＰＥＣＴ）检查，有１７例（８５．０％）局部脑血流（ｒＣＢＦ）减少，检出阳性率的高低与发作后距检查时间长短有正性关系。此１７例中有１０例于平均５９±１６天后第二次做ＳＰＥＣＴ检查，原来ｒＣＢＦ减少区有３例恢复正常，５例改善，２例无变化。１７例中有２例于ＴＩＡ末次发作后第３天和第９０天发生脑梗塞。无ＴＩＡ的脑动脉硬化症１０例中有６例ｒＣＢＦ减少。老年人ＴＩＡ的ｒＣＢＦ减少发生率较高，我们认为ｒＣＢＦ减少是ＴＩＡ发病的病理生理基础。
Abstract Among twenty elderly patients with transient ischemic attack (TIA) examined with single photon emission computed tomography (SPECT), 17 showed decrease of regional cerebral blood flow (rCBF) and the positive rate correlated well with the time interval between the attack and SPECT examination. 10 cases out of the 17 were examined again with SPECT after 34-91 days. It was found that only 3 cases recoverd, 5 cases improved and 2 cases remained unchanged. In addition, ten elderly patients with cerebral arteriosclerosis but without TIA were also examined with SPECT, rCBF was found to be decreased in 6. The results suggest that the decreased rCBF is the pathophysiological basis of TIA and that it is not recoverable in most of the cases.The decreased rCBF might possibly be present before the attack.
出处
《中华老年医学杂志》
CAS
CSCD
北大核心
1995年第2期78-80,共3页
Chinese Journal of Geriatrics
