When Tommy is on-call to 911 at the beginning of the episode, she is distraught and ignores several questions from the male dispatcher before she gives him the final instructions. When Grace later has Bree the 911 dispatcher play back the call, none of the unanswered questions are heard on the call.
When Owen is having his stitches removed, they are on his right side. In the first season, x-rays showed the tumor to be on his left side.