Changes of TXA2 and PGI2 during postoperative hypertensive crisis in patients with hypertensive intracerebral hemorrhage.

In order to explore the changes and the roles of TXA2 and PGI2 during postoperative hypertensive crisis in patients with hypertensive intracerebral hemorrhage, 31 cases subject to craniotomy were divided into three groups: group A, 9 patients with postoperative hypertensive crisis; group B, 13 patients without postoperative hypertensive crisis; and group C, 9 patients without history of hypertension and hypertensive intracerebral hemorrhage. TXA2, TXB2, 6-keto-PGF1 alpha and PGI2 were measured after operation in the three groups respectively. The postoperative blood pressure in group A, including SBP and DBP, was elevated more obviously than that in the other two groups. TXA2 and PGI2 in group A were significantly higher than those in other two groups (P<0.01). Moreover, the ratio of TXB2 to 6-keto-PGF1 alpha in group A was significantly higher than that in other two groups (P<0.05). The increase of TXA2 and the relative inadequacy of prostacyclin, especially 6-keto-PGF1 alpha, may play roles in the postoperative hypertensive crisis. And the increased value of TXB2 to 6-keto-PGF1 alpha could provide the basis for diagnosis of postoperative hypertensive crisis.