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J Vet Cardiol. 2007 Nov;9(2):99-101. Epub 2007 Nov 26.

Plasma atrial natriuretic peptide concentration in warmblood horses with heart valve regurgitations.

Author information

1
Equine Clinic, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany. heidrun.gehlen@tiho-hannover.de

Abstract

OBJECTIVES:

This study measured plasma atrial natriuretic peptide (ANP) concentration in horses with heart valve regurgitations (HVR) with and without atrial and ventricular dilatation.

BACKGROUND:

In humans and small animals, plasma ANP concentration is increased in heart disease and correlates with the severity of clinical signs and heart enlargement.

ANIMALS, MATERIALS AND METHODS:

Ten healthy horses (control) and 36 horses with HVR were evaluated by auscultation, electrocardiography, echocardiography, and determination of plasma ANP.

RESULTS:

Control horses demonstrated mean plasma ANP concentration of 21+/-5.4 pg/mL. Of the 36 horses with HVR, 17 horses possessed normal echocardiographic heart size (group 1), 10 horses had a left atrial dilatation (group 2) and 9 horses had both left atrial and ventricular dilatation (group 3). Mean plasma ANP concentration of groups 1, 2 and 3 was 20.1+/-5.6 pg/mL, 22.9+/-11.0 pg/mL and 27.6+/-17.4 pg/mL, respectively. The plasma ANP concentrations of HVR and control horses were not significantly different. The highest ANP concentrations were observed in horses with atrial and ventricular dilatation. No correlation between left atrial or ventricular size, weight, or sex and the plasma ANP concentration was found.

CONCLUSIONS:

No significant differences in plasma ANP concentration was observed between groups. Further study, especially in horses with clinical signs of heart failure is needed.

PMID:
18032122
DOI:
10.1016/j.jvc.2007.10.003
[Indexed for MEDLINE]

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