text: There is unfortunately insufficient data in subgroups of patients to mandate a change to guidelines recommendations regarding the management of<unk>  failure. Dosages should be altered as needed in the elderly or in those with altered metabolism.  African american patients may respond to the addition of hydralazine and nitrates to the standard of care in the<unk>  of<unk>  failure.
option_0: Congestive heart failure treatment of special populations
option_1: Chronic renal failure primary prevention
option_2: Right heart failure future or investigational therapies
option_3: Chronic obstructive pulmonary disease primary prevention
option_4: Acute kidney injury primary prevention
option_5: Sudden cardiac death post arrest care and prevention
option_6: Coronary heart disease primary prevention
option_7: Chronic renal failure secondary prevention