Cerebral ischemia during surgery:an overview

Cerebral ischemia is the pathophysiological condition in which the oxygenated cerebral blood flow is less than what is needed to meet cerebral metabolic demand.It is one of the most debilitating complications in the perioperative period and has serious clinical sequelae.The monitoring and prevention of intraoperative cerebral ischemia are crucial because an anesthetized patient in the operating room cannot be neurologically assessed.In this paper,we provide an overview of the definition,etiology,risk factors,and prevention of cerebral ischemia during surgery.

2010年世界热塑性工程塑料市场概述

2010年,世界电子、电器以及汽车等行业回暖,对热塑性工程塑料的需求增长,聚酰胺树脂、聚甲醛树脂、PBT、ABS树脂等市场需求均有不同程度的增长,尤其是聚碳酸酯增长率达到15%。原料己二酸、丁二烯、1,4-丁二醇等产品供应紧缺价格上涨,是制约热塑性工程塑料生产的主要因素。