What should the blood pressure be kept under during general anesthesia surgery?
Apr 07, 2023
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
For general anesthesia surgery, blood pressure should ideally be controlled at less than 140/90 mmHg, with diastolic pressure maintained between 60–90 mmHg. After surgery, vital signs—including heart rate, blood pressure, and respiratory rate—should generally be closely monitored. Following anesthesia and surgery, the body is typically weak, and proper positioning should be ensured during this period.
The systolic blood pressure for general anesthesia surgery should ideally be controlled at 140/90 mmHg, with diastolic pressure maintained between 60–90 mmHg.
Under normal circumstances, surgery can only proceed when blood pressure is within the normal range, as this effectively reduces the risk of cardiovascular complications. Unstable blood pressure control may lead to worsening of underlying diseases and even life-threatening conditions. Poor blood pressure control increases anesthetic risks. If blood pressure is particularly low, general anesthesia should preferably be avoided, as blood pressure tends to drop during general anesthesia—usually by about 20% from the baseline level.
After surgery, slightly low blood pressure may be normal, especially if cardiac function has not fully recovered, as blood pressure often remains low during this period. It typically recovers gradually on its own and usually does not require special treatment. However, postoperative monitoring of vital signs—including heart rate, blood pressure, and respiratory rate—is essential.
In addition, after anesthesia and surgery, the body is generally weak, so proper positioning is important. Patients are usually advised to lie flat without a pillow, using continuous monitoring.
