In this task, you will be given a single sentence or a set of sentences. You have to recognize the name of the disorder or disease. Disease is a disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. Although there might be several correct answers, you need to write one of them.
Q:  Patients with New York Heart Association classes II to IV CHF and left ventricular ejection fractions of no greater than 0 . 30 ( n = 3164 ) were randomized and followed up for a median of 46 months .
A: 
CHF