Evaluation of heart failure is the first step prior to introduction of
an adapted therapeutic strategy. Three principal objectives must be d
efined: 1) identify the cause of heart failure, which may directly gui
de subsequent treatment (valvular heart disease, coronary artery disea
se, etc.); 2) evaluate the repercussions of heart failure on everyday
life: evaluation of quality of life, severity of functional disorders
and reduction of the everyday capacity. This evaluation is the most de
licate as it is based on clinical interview: evaluation of the various
NYHA stages lacks precision and reproductibility. The stress test wit
h measurement of oxygen consumption appears to constitute an acceptabl
e evaluation technique; 3) evaluation of the prognosis. Many studies h
ave demonstrated precise relationships between life expectancy and a n
umber of criteria, alteration of myocardial function, echocardiographi
c findings, ejection fraction, cardiac output and even an AP chest x-r
ay. Although statistically valid, these criteria have a limited applic
ation in individual patients. Evaluation of all these parameters is th
e most accurate way to predict the subsequent course of the disease wh
ich therefore allows a more accurate choice of treatment and subsequen
t evaluation of their efficacy.