[1] : WordNet (r) 2.0

heart failure
     n : inability of the heart to pump enough blood to sustain
         normal bodily functions syn: coronary failure
see also:
coronary failure 

[2] : Moby Thesaurus II by Grady Ward, 1.0

71 moby thesaurus words for "heart failure":
   angina, angina pectoris, aortic insufficiency, aortic stenosis,
   apoplectic stroke, apoplexy, arrhythmia, arteriosclerosis,
   atherosclerosis, atrial fibrillation, auricular fibrillation,
   beriberi heart, cardiac arrest, cardiac insufficiency,
   cardiac shock, cardiac stenosis, cardiac thrombosis, carditis,
   congenital heart disease, cor biloculare, cor juvenum,
   cor triatriatum, coronary, coronary insufficiency,
   coronary thrombosis, diastolic hypertension, encased heart,
   endocarditis, extrasystole, fatty heart, fibroid heart,
   flask-shaped heart, frosted heart, hairy heart, heart attack,
   heart block, heart condition, heart disease, high blood pressure,
   hypertension, hypertensive heart disease, ischemic heart disease,
   mitral insufficiency, mitral stenosis, myocardial infarction,
   myocardial insufficiency, myocarditis, myovascular insufficiency,
   ox heart, palpitation, paralytic stroke, paroxysmal tachycardia,
   pericarditis, pile, premature beat, pseudoaortic insufficiency,
   pulmonary insufficiency, pulmonary stenosis,
   rheumatic heart disease, round heart, sclerosis, stony heart,
   stroke, tachycardia, thrombosis, tricuspid insufficiency,
   tricuspid stenosis, turtle heart, varicose veins, varix,
   ventricular fibrillation

Heart >> H Words
Heart, definition of term: Heart
heart_pag1.html

Failure >> F Words
Failure, definition of term: Failure
failure_pag1.html

Heart Condition >> H Words
Heart Condition, definition of term: Heart Condition
heart+condition_pag1.html

Heart Attack >> H Words
Heart Attack, definition of term: Heart Attack
heart+attack_pag1.html

By Heart >> B Words
By Heart, definition of term: By Heart
by+heart_pag1.html

Bleeding Heart >> B Words
Bleeding Heart, definition of term: Bleeding Heart
bleeding+heart_pag1.html

Enlarged Heart >> E Words
Enlarged Heart, definition of term: Enlarged Heart
enlarged+heart_pag1.html