Dose-related effects of ACE inhibition in man: quinapril in patients with moderate congestive heart failure. The Study Group on Neurohormonal Regulation in Congestive Heart Failure: Lausanne, Switzerland; Berlin, Düsseldorf, Munich, Germany.

Abstract:

:Early treatment with ACE inhibitors of even moderate heart failure is clinically beneficial, even though haemodynamic measurements cannot adequately quantitate such improvement. Neurohumoral assessment is, however, supposed to be more accurate. In 55 patients with moderate heart failure (ejection fraction < or = 35%), we investigated the dose-dependent effects of ACE inhibition with quinapril taken orally (2.5, 5 or 10 mg b.i.d.) following a placebo-controlled, parallel design protocol over 12 weeks. Plasma components of the renin angiotensin system, catecholamines and ANF were measured together with haemodynamics both at rest and during exercise. Before ACE inhibitor treatment, median PRA, Ang I and II and catecholamines were normal, while ANF was increased. All these parameters, including ACE activity, rose during exercise. Chronic inhibition of ACE activity was dose-dependent and the maximal fall in Ang II occurred with quinapril 20 mg.day-1. Humoral changes appeared more assessible than haemodynamic alterations even though many of these changes were reasonably correlated. The effects of chronic ACE inhibition on circulating neurohumoral components in patients with moderate heart failure are small and dose-dependent. Since humoral changes are related to haemodynamics they should account for the clinical benefit. Appropriately high doses of ACE inhibitors should be chosen for treatment of heart failure.

journal_name

Eur Heart J

journal_title

European heart journal

authors

Nussberger J,Fleck E,Bahrmann H,Delius W,Schultheiss HP,Brunner HR

doi

10.1093/eurheartj/15.suppl_d.113

subject

Has Abstract

pub_date

1994-12-01 00:00:00

pages

113-22

eissn

0195-668X

issn

1522-9645

journal_volume

15 Suppl D

pub_type

临床试验,杂志文章,随机对照试验
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