ER docs test ultrasound skills on belly muscles for better pain control

This study looks at whether emergency room doctors can use ultrasound to clearly see the muscle layers in the belly wall, which is needed for a type of pain block called a TAP block. About 118 healthy adults will get an ultrasound scan of their abdomen. The goal is to see if body size affects the doctor's ability to get a good image. No medications or injections are given.