A 4 year old without a history of trauma, presents with two…

A 4 year old without a history of trauma, presents with two days of fever, malaise and decreased appetite. He will not weight bear on his right leg and the knee is noted to be swollen, red and tender to touch. Blood and aspirated joint fluid cultures return positive. Which of the following is the MOST likely diagnosis?

A 15 yr old girl presented to the ED with several days of fa…

A 15 yr old girl presented to the ED with several days of fatigue, nausea and shortness of breath. Chest X-ray demonstrated cardiomegaly and Echocardiogram demonstrated depressed cardiac function. She is admitted to the ICU, what is the best initial medication to start  for her  heart failure therapy?