Hemodynamics of hypertensive putaminal hemorrhage evaluated by Xenon-enhanced computed tomography and acetazolamide test |
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Authors: | Tetsuhiro Kitahara Tetsuo Yamashita Shiro Kashiwagi Noriaki Kawakami Hideyuki Ishihara Haruhide Ito |
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Institution: | Department of Neurosurgery, Yamaguchi Univesity School of Medicine, 1144 Kogushi, Ube, Yamaguchi 755, Japan |
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Abstract: | Cerebral blood flow (CBF) is usually decreased in patients with hypertensive putaminal hemorrhage (HPH). However, there are few reports concerning cerebrovascular reserve capacity (CRC) in these cases. This study evaluated cerebral hemodynamics in patients with HPH by measuring CBF and CRC. CBF and CRC were measured by stable xenon enhanced computed tomography (Xe-CT) in 11 patients with HPH (HPH group) and 11 patients with essential hypertension without intracerebral hematoma (non-HPH group). CBFs of the hemisphere and thalamus in the HPH group were lower than those in the non-HPH group. And the CBF of the hemisphere was increased transiently after the surgical evacuation of the hematoma. Thereafter, it fell gradually. The CRCs were also lower in acute stage of the HPH group. The CRC recovered during the chronic stage. Hemodynamics in patients with HPH can be modulated by surgical removal of hematoma. However, some adjunct therapies are necessary to prevent delayed neuronal inactivity. Stable Xe-CT with acetazolamide test is useful to evaluate hemodynamics in the HPH patients. |
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Keywords: | Hypertensive putaminal hemorrhage Cerebral blood flow Xe-CT Acetazolamide |
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