Look, the other reviewers have covered a lot of points -- acting is pretty good, story lines are engaging. My beef is with how the writers play up the nursing and downplay the "doctoring". Since when is a newbie nurse going to go from general admissions to the ER to a surgical suite, all in the span of a few episodes?
The nurses also tend to diagnose at the patient's bedside, where in reality they have zero training or right to do so. I'm not looking for 100% realism (remember ER?) but it's laughable how much leeway the writers give nursing in this show, distracting from what little suspension of disbelief viewers may have.