Simple ultrasound test may predict dangerous blood pressure drop during brain surgery

This study looks at whether a simple ultrasound test before surgery can predict if a patient will have dangerously low blood pressure after receiving anesthesia for brain surgery. Researchers will measure the size and flexibility of a major vein and artery using ultrasound in 36 adults. The goal is to find a reliable way to identify patients at risk, so doctors can take steps to prevent complications.