一般成年人的血压长期低于90/60mmHg者为低血压。低血压的人容易头晕疲劳,精力不能集中,脉搏缓慢;严重者会发生直立性眩晕、四肢发冷、心悸、呼吸困难、共济失调、发音含糊甚至昏厥,需长期卧床。长期低血压还会导致身体器官的血液供应不足,血液循环缓慢,削弱组织细胞氧气和营养的供应及二氧化碳等代谢废物的排泄,从而影响重要脏器如脑、肾、心脏的功能。 General adult blood pressure lower than 90 / 60mmHg were hypotension. People with hypotension are easily dizzy and tired, unable to concentrate and have slow pulse. In severe cases, there will be erectile dizziness, cold extremities, palpitations, dyspnea, ataxia, vague vocalizations or even fainting. Long-term hypotension can also lead to inadequate blood supply to the body organs, slow blood circulation, impaired tissue oxygen and nutrient supply, and excretion of metabolic waste such as carbon dioxide, affecting the function of vital organs such as brain, kidney and heart.