A 4-year-old boy who has acute myelogenous leukemia is admit…

A 4-year-old boy who has acute myelogenous leukemia is admitted for the treatment of fever and neutropenia. He has a Broviac catheter in place. His temperature on admission is 39.3 degrees C and absolute neutrophil count (ANC) is less than 100 cells/uL. No focus of infection is apparent on physical exam. After blood cultures are obtained, he is begun on treatment with piperacillin/tazobactam and gentamicin. Five days later, the cultures remain negative, ANC continues to be low and his daily maximum temperature continues to be greater than 39.3 degrees C. Of the following, the MOST appropriate management at this point is to:

A 17 year old female presents to the ED with a 1-week histor…

A 17 year old female presents to the ED with a 1-week history of left leg pain and swelling. She reports she takes oral contraceptives. Evaluation with Doppler ultrasound reveals absence of flow in the left femoral and popliteal veins.  The most important potential complication one should be cautious about with this patient is: