Beyond the Block: Why Would an Anesthesiologist Use Ultrasound?

Increasingly, anesthesiologists have been using ultrasound guidance to help visualize soft tissue anatomy and nerve location while performing regional nerve blocks. Correct placement of local anesthetics lead to long lasting pain management and enhanced recovery times.
But beyond the block, how does ultrasound help anesthesiologists do their jobs?
The answer has a lot to do with the changing practice of medicine.