A 62-year-old man with a history of dilated cardiomyopathy and a left ventricular ejection fraction (LVEF) of 30% presents to the emergency department with complaints of shortness of breath and weight ...
Make sure that the listening area is quiet, and importantly, do not listen through the patient's clothing. Warm your stethoscope either by carrying it in your pants pocket or by vigorously rubbing it.