This is the second episode to be narrated by someone other than Meredith, in this case, Cristina.
When they lose one of the car crash victims before the girl collapses on Addison, Burke asks Meredith to call it. She says "time of death 7:53 AM." Hospitals use "military time"/a 24 hour clock, so she wouldn't need to specify am or pm.
Every episode of the show is named after a famous song. "From a Whisper to a Scream" is a song by Elvis Costello:
During surgery, Christina has one earring stud in her right ear. In the next angle, it's gone.