A patient with heart failure presents to your practice compl…

A patient with heart failure presents to your practice complaining of classic symptoms of his disease. On examination, numerous murmurs are noted throughout the chest. In addition to a 12-lead ECG, what is the next diagnostic study to order that would be most helpful to identify the severity of the patient’s problems?

During a routine athletic physical, a 15-year-old boy is fou…

During a routine athletic physical, a 15-year-old boy is found to have a systolic thrill that is palpable at the lower left sternal border accompanied by a harsh, pansystolic murmur that is heard best at the site of the thrill. He is asymptomatic and has no evidence of hypertension, cyanosis, or edema. An electrocardiogram and a chest radiograph are normal. What is the most likely diagnosis?