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在短暂性脑缺血发作(TIA)和卒中的病因中,低血压的作用是有争论的.本文报告了1975年和1980年之间132例TIA住院病人的资料.住院期间所有TIA病人,仅有7例与低血压有关.这些病人有低血压发作的15分钟内,重复以前TIA发生的神经系统体征.平均血压下降的范围是26.4±5.5毫米汞柱.TIA通常在病人的血压恢复到基础水平2小时内消失.低血压的发生与抗高血压治疗、脑血管造影和位置改变有关.本研究组20例有低血压发作而不伴随局限神经系缺陷,其发作期间平均动脉压下降25.8±4.6毫米汞柱.与低血压有关的TIA病人中,有高血压(7/7对45/125,P<0.05)和颈动脉狭窄者(4/4对12/85,P<0.02)比研究组中其他病人有较高的发病率.在有低血压发作的病人中,与低血压有关的TIA病人有颈动脉狭窄(4/4对0/20,R<0.001)和高血压者(7/7对14/20,P<0.2),有较高的发病率.与低血压有关的4个TIA病人都发现有血液动力学意义的颈动脉狭窄.其中3例证明
The role of hypotension in the pathogenesis of transient ischemic attacks (TIA) and stroke is debated.This article reports data on 132 TIA patients hospitalized between 1975 and 1980. All TIA patients during hospitalization, only Seven patients were associated with hypotension, and those patients who had hypotensive episodes within 15 minutes repeated previous signs of nervous system dysfunction in the TIA, with an average blood pressure drop of 26.4 ± 5.5 mmHg. TIA usually returned to baseline after the patient’s blood pressure returned The level disappeared within 2 hours.The incidence of hypotension and antihypertensive treatment, cerebral angiography and positional changes in the study group of 20 patients with hypotensive attacks without local neurological deficits, the mean arterial pressure during the attack decreased 25.8 ± 4.6 mmHg. Among hypotension-related TIA patients, hypertension (7/7 versus 45/125, P <0.05) and carotid stenosis (4/4 vs 12/85, P <0.02) Other patients in the group had a higher morbidity rate. Among those with hypotensive episodes, those with hypotension-related TIA were carotid stenosis (4/4 versus 0/20, R <0.001) and high blood pressure (7 / 7 versus 14/20, P <0.2), with a higher incidence of haemodynamic effects in all 4 TIA patients associated with hypotension Significant carotid stenosis. 3 cases prove