With her mind on surgery and recovery—Amy Christophers told Newsweek she didn’t think any further about the test.

Every day, patients with an upcoming operation roll up their sleeves for blood tests or get heart and lung tests and scans. But in many cases, they don't actually need to have these tests, because the ...

Monica da Silva, a critical care and cardiac anesthesiologist at the University of Alabama at Birmingham, was counseling a patient who had been in a car accident. She had suffered a broken bone and ...