Why blood pressure targets are lower during surgery

When it comes to surgery, managing blood pressure is crucial for ensuring the patient’s safety and well-being. During operations, blood pressure targets are often set lower than usual, and this is done for several important reasons.

Firstly, maintaining lower blood pressure during surgery helps reduce the risk of bleeding. High blood pressure can lead to increased bleeding from the surgical site, which can complicate the procedure and increase the risk of complications. By keeping blood pressure lower, surgeons can better control bleeding and ensure a smoother operation.

Another reason for lower blood pressure targets is to protect the patient’s organs. During surgery, the body’s blood flow and pressure can be affected by the anesthesia and the surgical procedure itself. Lowering blood pressure helps ensure that vital organs receive the right amount of blood flow without being over-pressurized, which can prevent damage to these organs.

Additionally, maintaining a stable and lower blood pressure helps prevent fluctuations that could lead to complications such as stroke. Large changes in blood pressure can be risky, especially for patients with pre-existing conditions like high blood pressure or heart disease. Keeping blood pressure stable reduces the risk of both hemorrhagic and ischemic strokes, which are significant concerns during surgery.

Lastly, lower blood pressure targets are often part of strategies to avoid hypotension (low blood pressure) and hypertension (high blood pressure). These strategies ensure that the patient’s blood pressure remains within a safe range, which is crucial for maintaining adequate blood flow to the brain and other vital organs. For instance, some strategies aim for a mean arterial pressure (MAP) of 80 mmHg or greater to avoid hypotension, while others may target even lower levels, such as 60 mmHg, depending on the specific surgical needs and patient conditions.

Overall, setting lower blood pressure targets during surgery is a careful balance between ensuring patient safety, preventing complications, and maintaining optimal organ function. It requires precise monitoring and management by the surgical team to ensure the best possible outcomes for the patient.