[Classic treatment of chronic heart insufficiency. What if new?].
The aims of treatment of chronic heart failure are to improve the symptoms and the quality of life, reduce mortality and prevent left ventricular dysfunction. Before the first symptom occurs, neurohormonal activation takes place (increased catecholamines and atrial natriuretic peptide levels). Diuretics improve symptoms and are irreplaceable for the elimination of salt and water overload. Loop diuretics are used more often than the thiazides. Their deleterious effects on electrolyte balance are well known. The fact that they activate the renin angiotensin system is a more recent acquisition; the increase in plasma renin activity is a poor prognostic factor. Diuretics potentialize the vasodilator effect of angiotensin converting enzyme inhibitors which inhibit the neurohumoral activation induced by the diuretics. This therapeutic association is very logical, effective and allows reduction in the dosage of the diuretic. To date, there are no large scale controlled studies of the effects of diuretics on mortality. Spironolactone corrects hypokalaemia and hypomagnesaemia induced by loop diuretics. Moreover, it has been shown experimentally in renovascular hypertension and in hyperaldosteronism, that this molecule can prevent myocardial fibrosis, a factor which leads to ventricular dysfunction. The RALES study will analyse the effect of associating spironolactone to diuretic and ACE inhibitor therapy on the mortality of patients in NYHA classes III-IV. The value of digitalis in heart failure patients with sinus rhythm is a classical controversy. Digitalis has a positive inotropic effect (inhibition of NaK-dependent ATPase). More recently, a favourable neurohormonal effect has been reported; digitalis decreases the activation of the sympathetic and renin-angiotensin systems.(ABSTRACT TRUNCATED AT 250 WORDS)
D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use; D002908:Chronic Disease; D004071:Digitalis Glycosides / Q000627:therapeutic use; D004232:Diuretics / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D006333:Heart Failure / Q000188:drug therapy*; D006801:Humans; D012084:Renin-Angiotensin System / Q000187:drug effects; D013148:Spironolactone / Q000627:therapeutic use; D018487:Ventricular Dysfunction, Left / Q000188:drug therapy
D000806:Angiotensin-Converting Enzyme Inhibitors; D004071:Digitalis Glycosides; D004232:Diuretics; D013148:Spironolactone
Le traitement classique de l'insuffisance cardiaque chronique. Quoi de neuf?