目前临床上合并有高血压或血压异常升高的患者行心血管或非心血管手术愈来愈多。有研究表明,随着手术患者血压的增高,围术期发生心血管并发症的风险增大[1];然而,由于麻醉因素和术中失血,高血压患者也可能出现血压严重降低,造成组织血流量下降和器官缺血性损伤。因此,为围术期 At present, there are more and more cardiovascular or non-cardiovascular surgery in patients with clinically elevated hypertension or abnormal blood pressure. Some studies show that with the increase of blood pressure in surgical patients, there is an increased risk of perioperative cardiovascular complications [1]; however, due to anesthesia and intraoperative blood loss, patients with hypertension may also have severe blood pressure reduction, resulting in tissue Decreased blood flow and organ ischemic injury. Therefore, perioperative period