The ar wall may hae thickened due to systemic pressure load , resulting in reduction of wall motion of the ar on transthoracic echocardiogram 由于主动脉压力负荷增加使右室壁变厚,经胸超声心动图显示出右心室壁位移
The arv wall may have thickened due to systemic pressure load , resulting in reduction of wall motion of the arv on transthoracic echocardiogram 由于主动脉压力负荷增加使右室壁变厚,经胸超声心动图显示出右心室壁位移
In terms of their effect on blood pressure , alpha 2 agonists hae a biphasic effect , decreasing and increasing systemic pressures at small and large doses , respectiely ( 3 ) 对血压的作用, - 2受体激动剂的作用是双向的,在小剂量和大剂量下分别为降低和增加全身压力[ 3 ] 。
This paper introduces the functions of the pressure stabilizer in the pre - acting design of the automatic sprinkler system , and expounds some experiences of maintaining the systemic pressure by selecting the pressure stabilizer 介绍了自动喷水灭火系统预作用设计中稳压装置的作用,阐明了选择稳压装置来维护系统压力的一些体会。
Included in this management are the use of an etomidate or narcotic induction and maintenance , with the blunting of responses to laryngoscopy and strict monitoring and control of pulmonary and systemic pressures with inotropic and vasodilatory agents 麻醉诱导和维持采用依托咪酯,以降低喉镜插管时的反应,术中加强监测,通过血管活性药控制肺循环和体循环压力。
The hemodynamic change induced by embolization of the cerebral arteriovenous malformation was analyzed using the water hammer principle . the highest pressure that can be reached when the water hammer phenomenon occurs was calculated . the acute instantaneous pressure rising may be an important factor leading to intracranial hemorrhage or swelling when the avm is embolized . it is shown that long feeding artery of avm will increase the possibility of direct water hammer , and high wall shear stress of feeding artery will increase the water hammer pressure . this suggests that such kind of avms should be embolized stepwise and the systemic pressure should be rationally reduced before embolization 以水击原理分析了脑avm栓塞治疗时血液动力学变化过程,计算了瞬时水击压力可能达到的最高值。瞬时增高的水击压力可能是avm栓塞时发生急性脑出血或脑肿胀的重要血液动力学因素。而avm供血动脉血管壁面切应力偏高和供血动脉过长可增加水击的危险程度,提示对这类结构avm栓塞治疗时应采取合理的降压措施并尽可能分多次栓塞。