A 16 year old is admitted following a syncopal episdoe while on a basketball court. The pt reports having had syncopal episodes in the past, generally while in the midst of sports events. The nurse notes the pt is in SB with a rate of 55, PR interval of 0.16, QRS of 0.10, QT interval of 0.50, and a slightly peaked T wave. The nurse should anticipate
A. cardiac cath the following morning
B. performance of an echo
C. serum and urine toxicology screens
D. CBC and trop levels