Approximately what percentage of patients experience major complications from cerebrovascular angiography?

• A. 10% of patients
• B. 1% of patients
• C. 0.1% of patients
• D. 0.01% of patients

Answer: (B)

The correct answer reflects the recognized risk associated with cerebrovascular angiography, which is the procedure designed to visualize the blood vessels in the brain. Major complications are understood to occur in approximately 1% of patients undergoing this procedure. This percentage takes into account the various potential issues that can arise, such as stroke, hematoma, or vascular injury, which are serious but relatively infrequent compared to the total number of procedures performed.

In understanding the context of this statistic, it is important to appreciate that while complications can happen, the overwhelming majority of angiograms are completed without significant adverse events, highlighting the safety and effectiveness of the procedure overall.