Which of the following is a normal systolic blood pressure range for renal disease patients?

• A. 70-80 mmHg
• B. 80-90 mmHg
• C. 90-100 mmHg
• D. 100-110 mmHg

Answer: (B)

In renal disease patients, protecting kidney perfusion while avoiding pressure-related injury is the guiding goal for blood pressure management. The kidneys have a delicate balance of autoregulation, and chronic kidney disease often makes them more susceptible to damage from both high pressures and sudden drops in flow. Keeping systolic blood pressure in a relatively lower, stable range helps prevent hypertensive stress on fragile renal vasculature while also avoiding significant drops that could cut off renal perfusion.

Therefore, a systolic range around 80-90 mmHg is considered a safe baseline in this context. If BP climbs much higher, glomerular capillary pressures can rise and contribute to further renal injury; if it dips well below this range, renal perfusion and filtration can be compromised, increasing the risk of acute kidney injury, especially during anesthesia when hemodynamics are shifting. In many renal-disease scenarios, this lower target helps balance the competing risks of hypertension and hypoperfusion.