Waiting their turn. David McNew/Getty Images hide caption

itoggle caption David McNew/Getty Images

A message from Ashley Dias. Chana Joffe-Walt/NPR hide caption

itoggle caption Chana Joffe-Walt/NPR

Patient Bob Berquist with Gregory Wagner, a doctor in the emergency department. Berquist, who volunteers at Fauquier Hospital, was admitted for low blood sugar when another nurse noticed he seemed dizzy. John Rose/NPR hide caption

itoggle caption John Rose/NPR

Douglas Harlow Brown, 80, of East Lansing, Mich., watches birds inside a medical rehab facility. Brittney Lohmiller for NPR hide caption

itoggle caption Brittney Lohmiller for NPR

The U.S. Supreme Court building. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

No anesthesia here: A patient watches his colonoscopy as it happens at Memorial Sloan-Kettering Hospital in New York. Ted Thai/Time & Life Pictures/Getty Image hide caption

itoggle caption Ted Thai/Time & Life Pictures/Getty Image

Dr. David Gross, medical director of the sleep lab at the National Rehabilitation Hospital in Washington, D.C., says more than three-quarters of the patients who come to his lab are diagnosed with apnea. Jenny Gold/Kaiser Health News hide caption

itoggle caption Jenny Gold/Kaiser Health News