Michelangeli F, Cordier M, Melandri P, Gaspaillard M, Migliori G, Maestracci P
Ann Anesthesiol Fr. 1975 Oct;16(6):429-36.
A statistical study bearing upon othe fall of blood pressure concomitant with the setting of peridural anaesthesia was carried out upon an homogeneous series of patients over 75 belonging to groups III and IV of the A S A classification for interventions seating below the IXth metamere. From this study, it seems to follow that: - for starting maximum arterial tensions over 180 mm/Hg, pressure falls are virtually constant in absolute value; - the most important variations in pressure falls are to be found in abdominal surgery; - the lowest figure in blood pressure which accompanies the achievement of surgical analgesia takes place about the 24 th minute whatever the type of surgery can be; - no significant link can be evidence between the importance of the fall in blood pressure and the consumption of the mixture required for surgical analgesia.
对一组年龄超过75岁、属于美国麻醉医师协会（ASA）分类中III级和IV级、手术部位在第九胸椎以下的同质患者，进行了一项关于硬膜外麻醉时伴随的血压下降的统计研究。从这项研究中似乎可以得出以下结论：- 对于起始最大动脉压超过180毫米汞柱的情况，血压下降的绝对值实际上是恒定的；- 血压下降最重要的变化出现在腹部手术中；- 无论何种手术类型，实现手术镇痛时伴随的最低血压值大约出现在第24分钟；- 血压下降的幅度与手术镇痛所需混合药物的用量之间没有明显关联。
