Clinical and neurohumoral consequences of diuretic withdrawal in patients with chronic, stabilized heart failure and systolic dysfunction.

Abstract

BACKGROUND:

Loop diuretics are beneficial in heart failure in the short term because they eliminate fluid retention, but in the long-term, they could adversely influence prognosis due to activation of neurohumoral mechanisms.

AIMS:

To explore the changes induced by diuretic withdrawal in chronic nonadvanced heart failure.

METHODS:

Diuretics were withdrawn in 26 stabilized heart failure patients with systolic dysfunction (ejection fraction [EF]<45%). Clinical status was evaluated by physical exam, exercise capacity (corridor test) and New York Heart Association (NYHA) class. Biochemical and neurohumoral determinations were performed at baseline and at 3 months.

RESULTS:

At 3 months, 17 out of 26 patients (65%) were able to tolerate diuretic interruption without a deterioration in exercise capacity or New York Heart Association functional class. Renal function parameters improved (baseline urea 46.2+/-10.8 to 39.2+/-10.1 mg/dl at 3 months, p=0.014; creatinine 1.1+/-0.23 to 0.98+/-0.2 mg/dl, p=0.013). Glucose metabolism also improved (fasting glucose 151+/-91 to 122+/-14 mg/dl, p=0.035). Heart rate and systolic blood pressure did not significantly change, while diastolic blood pressure increased (from 80+/-10 to 87+/-13 mm Hg, p=0.006). Neurohumoral determinations showed a decrease in plasma renin activity (4.19+/-5.96 to 2.88+/-4.98 ng/ml, p=0.026), with no changes in aldosterone, arginine-vasopressin, endothelin-1 and norepinephrine. In contrast, atrial natriuretic peptide significantly increased (115+/-87 to 168+/-155 pg/ml, p=0.004).

CONCLUSION:

Diuretic withdrawal in stabilized heart failure with systolic dysfunction is associated with an improvement in renal function parameters, glucose metabolism and some neurohumoral parameters, such as plasma renin activity; however, atrial natriuretic peptide levels increased.

• Authors: Enrique Galve, Anna Mallol, Robert Catalan, Jordi Palet, Stella Méndez, Elsa Nieto, Anna Diaz, Jordi Soler-Soler
• Journal: European journal of heart failure (Eur J Heart Fail) Vol. 7 Issue 5 Pg. 892-8 (Aug 2005) ISSN: 1388-9842 [Print] England
• PMID: 16087141 (Publication Type: Journal Article)

Chemical References

• Diuretics
• Sodium Potassium Chloride Symporter Inhibitors
• Atrial Natriuretic Factor
• Renin

Topics

• Adult
• Aged
• Aged, 80 and over
• Atrial Natriuretic Factor (blood)
• Diuretics (pharmacology, therapeutic use)
• Female
• Heart Failure (blood, drug therapy, physiopathology)
• Humans
• Male
• Middle Aged
• Pilot Projects
• Renin (blood)
• Sodium Potassium Chloride Symporter Inhibitors (pharmacology, therapeutic use)
• Substance Withdrawal Syndrome