Zachary F. Meisel and Jesse M. Pines in Slate:
A major cause for E.R. crowding is the hospital practice of boarding inpatients in emergency departments. This happens when patients who come to the E.R. need to be admitted overnight. If there are no inpatient beds in the hospital (or no extra inpatient nurses on duty that day) then the patient stays in the E.R. long past the completion of the initial emergency work. This is what happened to Green, and it has become widespread and common. The problem is that boarding shifts E.R. resources away from the new patients in the waiting room. While E.R. patients wait for inpatient beds, new patients wait longer to see a doctor. As more new patients come, the waits grow. And an E.R. filled with boarding patients and a full waiting room is an unhappy E.R.: The atmosphere is at once static and chaotic. If you or a loved one has waited for hours in an E.R., you know what we mean. The environment can be unsafe and even deadly. A recent study found that critically ill patients who board for more than six hours in the E.R. are 4 percent more likely to die.
More here. [For Tariq Jehangir Khan.]