The acute effect of ACEI and ARB's upon endothelin in heart failure patients.

Purpose Of The Study: to compare the acute effect of ACEI and ARB's upon the plasmatic endothelin level in heart failure patients.

Methods: There were studied 30 patients with congestive heart failure, III-IV functional NYHA class, that were not under ACEI or ARB's treatment. In all the patients the endothelinl-21 plasmatic level was determined.