Which of the following is a potential complication of anesthesia?

Cardiovascular instability is recognized as a potential complication of anesthesia. During anesthesia, various drugs and techniques used can affect the cardiovascular system significantly. Factors such as changes in blood pressure, heart rate, and cardiac output can lead to complications like hypotension (low blood pressure) or arrhythmias (irregular heartbeats). These complications may arise from the direct effects of anesthetic agents on the heart and blood vessels or reactions due to the patient's existing medical conditions.

Improved patient satisfaction and decreased anxiety are not complications; rather, they are positive outcomes that can result from effective anesthesia management, contributing to an overall better patient experience during dental procedures. Increased awareness, while it can happen in certain situations (such as in cases of anesthesia awareness), is not typically regarded as a standard complication of anesthesia and is relatively rare. Therefore, cardiovascular instability stands out as a legitimate concern and potential risk associated with the administration of anesthesia.