Beneficial effect of long-term PGE1-treatment in left ventricular heart failure.

Five male patients aged 34-47 years with congestive heart failure showed an improvement of left ventricular ejection fraction (LVEF) at rather low PGE1-doses (10-30 ng/kg/min) without affecting blood pressure or heart rate. LVEF was estimated by means of radionuclide ventriculography (RNV) prior to and during i.v.-infusion of PGE1 at increasing dose rates (10-100 ng/kg/min). Therefore, we administered to these responders PGE1 at a rate of 20 ng/kg/min i.v. continuously on a long-term basis by means of a portable infusion pump. Until up to 4 months the remarkable benefit in LVEF induced by PGE1 was still present to a comparable extent in all the patients. No rebound desensitization phenomenon occurred either on platelet activity or on LVEF. PGE1, via a more practical route of application or by a stable analogue, may be a promising therapy at this stage of cardiomyopathy (CMP).