Intensity refers to the loudness of the murmur, and is graded according to the Levine scale, from 1 to 6:
ACC/AHA Stages Of Heart Failure:
Stage A identifies the patient who is at high risk for developing HF but has no structural disorder of the heart.
Stage B refers to a patient with a structural disorder of the heart but who has never developed symptoms of HF.
Stage C denotes the patient with past or current symptoms of HF associated with underlying structural heart disease.
Stage D designates the patient with end-stage disease who requires specialized treatment strategies such as mechanical circulatory support, continuous inotropic infusions, cardiac transplantation, or hospice care.
This classification system is intended to complement but not to replace the New York Heart Association (NYHA) functional classification, which primarily gauges the severity of symptoms in patients who are in stage C or D. It has been recognized for many years, however, that the NYHA functional classification reflects a subjective assessment by a physician and changes frequently over short periods of time and that the treatments used do not differ significantly across the classes. Therefore, the committee believed that a staging system was needed that would reliably and objectively identify patients in the course of their disease and would be linked to treatments that were uniquely appropriate at each stage of their illness. According to this new approach, patients would be expected to advance from one stage to the next unless progression of the disease was slowed or stopped by treatment. This new classification scheme adds a useful dimension to our thinking about HF similar to that achieved by staging systems for other disorders (e.g., those used in the classification of cancer).
Get More Stuff Like This In Your Inbox