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自我诊断: (1)对于血压的正常高限,世界卫生组织和国际高血压联盟明确规定为:血压≥140/90mmHg为高血压。但对于低血压,目前国内外尚无严格的公认数值标准。医学教科书上记载上肢肱动脉<90/60mmHg为低血压。由于器官与组织的血液灌注主要取决于收缩压水平,故衡量低血压的意义应以收缩压为准,而舒张压仅作参考。例如肾脏的灌注压为70mmHg,如果收缩压低于此值,就可能出现少尿或无尿现象。 (2)低血压时容易出现头昏、头晕,但在临床实践中确一部分人血压常年偏低,例如收缩压在85～90mmHg,但始终健康无恙,甚至有些学者称此类低血压为“长寿血压”。判断低血压的病理意义主要根据两点:首先低血压是否
Self-diagnosis: (1) For the normal high blood pressure limit, WHO and the International Union of Hypertension specifically states: blood pressure ≥ 140 / 90mmHg for hypertension. But for hypotension, at present there is no strict recognized numerical standard at home and abroad. Medical textbooks recorded upper brachial artery <90 / 60mmHg for hypotension. Because organ and tissue blood perfusion mainly depends on the level of systolic blood pressure, so the significance of measuring hypotension should prevail systolic blood pressure, diastolic blood pressure only for reference. For example, the renal perfusion pressure of 70mmHg, if the systolic blood pressure below this value, there may be oliguria or anuria. (2) hypotension prone to dizziness, dizziness, but in clinical practice, indeed part of the human blood pressure is low, such as systolic blood pressure at 85 ~ 90mmHg, but always healthy and unhealthy, and even some scholars call such hypoxemia “ Longevity blood pressure ”. To determine the pathological significance of hypotension is mainly based on two points: first, whether low blood pressure