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高血压并不是一种独立疾病,而是某些疾病的病征之一。由于血压增高,结果使血液动力学发生改变,引起心脏血管、中枢神经系统以及肾脏的病理改变。所以高血压对于麻醉的危险性早已众所周知。当高血压处于稳定状态且无重要并发症时,危险性较小,如果合并重要脏器的损害、特别是肾功能的损害,选择手术适应症应特别慎重。一般认为成年人卧床休息15分钟,血压在160/90毫米汞柱以上者为高血压。一、引起高血压的原因 1.心排血量增加:在甲状腺机能亢进及原发性高血压病人当情绪激动和应激反应时
Hypertension is not an independent disease, but one of the symptoms of certain diseases. As a result of the increase of blood pressure, the result changes the hemodynamics, causing the pathological changes of the cardiovascular system, the central nervous system and the kidney. So the risk of hypertension for anesthesia has long been well known. When high blood pressure is stable and no important complications, the risk is small, if combined with the damage of vital organs, especially renal damage, surgical indications should be selected with particular caution. Adults are generally considered 15 minutes bed rest, blood pressure in more than 160/90 mm Hg high blood pressure. First, the causes of hypertension 1. Cardiac output increased: in patients with hyperthyroidism and essential hypertension when emotional and stress reaction