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But Dr. Butler had a somewhat different take on how comorbidity management fits into the broader picture of heart failure management.
“There is no doubt that heart failure worsens other comorbidities and other comorbidities worsen heart failure. The relationship is bidirectional between heart failure and chronic obstructive pulmonary disease, liver disease, depression, sleep apnea, renal disease, lung disease, diabetes, etc. The problem is that treating a comorbidity does not necessarily translate into improved heart failure outcomes. Comorbidities are important for heart failure patients and worsen their heart failure outcomes. However, management of a comorbidity should be done primarily for the sake of improving the comorbidity. If you treat depression, for example, and it does not improve a patient’s heart failure, that doesn’t mean you shouldn’t have treated the depression. It just means that we don’t have good data that it will improve heart failure.”
Another limitation from a U.S. perspective is what role treatment of various comorbidities can play in benefiting heart failure patients and how compelling the evidence is for this. Dr. Butler gave as an example the problem with treating iron deficiency in heart failure patients who do not have anemia, a strategy endorsed in the ESC guidelines as a level IIa recommendation.
“The data regarding improved exercise capacity from treatment with intravenous ferric carboxymaltose is pretty convincing,” he said. But patients have benefited from this treatment only with improved function and quality of life, and not with improved survival or fewer hospitalizations.
“Is treating patients to improve their function and help them feel better enough?” Dr. Butler asked. “In other diseases it is. In gastrointestinal disease, if a drug helps patients feel better you approve the drug. We value improved functional capacity for patients with pulmonary hypertension, angina, and peripheral vascular disease. All these indications have drugs approved for improving functional capacity and quality of life. But for heart failure the bar has been set higher. There is a lot of interest in changing this” for heart failure.
“There is interest in running a study of ferric carboxymaltose for heart failure with a mortality endpoint. In the meantime, the impact on improving functional capacity is compelling, and it will be interesting to see what happens in the U.S. guidelines. Currently, in U.S. practice if a heart failure patient has iron-deficiency anemia you treat with intravenous iron replacement and the treatment gets reimbursed without a problem. But if the heart failure patient has iron deficiency without anemia then reimbursement for the cost of iron supplementation can be a problem,” Dr. Butler noted. This may change only if the experts who write the next U.S. heart failure guidelines decide to change the rules of what constitutes a useful heart failure treatment, he said.
Dr. Butler has been a consultant to Novartis and Amgen and several other companies. Dr. Jessup had no disclosures. Dr. Mehra has been a consultant to Teva, Johnson & Johnson, Boston Scientific, and St. Jude. Dr. Ruschitzka has been a consultant to Novartis, Servier, Sanofi, Cardiorentis, Heartware, and St. Jude. Dr. McMurray has received research support from Novartis and Amgen. Dr. Lindenfeld has been a consultant to Novartis, Abbott, Janssen, Relypsa, and Resmed. Dr. Voors has been a consultant to Novartis, Amgen, Servier, and several other drug companies. Dr. Ponikowski has been a consultant to Amgen, Novartis, Servier, and several other drug companies. Dr. Harjola has been a consultant to Novartis, Servier, Bayer, Boehringer Ingelheim, Pfizer, and Resmed. Dr. Abraham has been a consultant to Amgen, Novartis, and several device companies. Dr. Anker has been a consultant to Novartis, Servier, and several other companies.
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