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- W2077338034 abstract "Abstract Objectives: Large animal experimental models of chronic heart failure (HF) permit repeated invasive assessment of cardiovascular function, and evaluation of new medical or surgical therapies. The existing models however fail to achieve stable and long-term HF. The aim of this study was to create a simple and stable chronic model of HF in goat, using both arteriovenous fistula and weekly intravenous doxorubicin injections. Methods: After a preliminary experiment on four goats receiving weekly 1 to 2 mg/kg of doxorubicin, six adult female goats, having had an arteriovenous fistula without signs or symptoms of heart failure, received weekly two different dosages of doxorubicin for 13 weeks : group A (n = 3) received 0.5 mg/kg and group B (n = 3) received 1 mg/kg. After a three-month period without medication, both groups received again 1 mg/kg for four weeks. Cardiac function was assessed by repeated electrocardiographic and echocardiographic examinations. Results: Four goats died during the medication period (one in group A, three in group B). During the period without medication a stable ventricular hypocontractility with left ventricular dilation was observed. Left ventricular dysfunction was more pronounced in group B, and was associated with clinical symptoms of HF. Conclusions: Arteriovenous fistula alone did not produce HF. Its association with doxorubicin injections provides a simple and stable chronic model of HF. This association allows reduction of the required doxorubicin dose and toxicity in animals and in the environment. Depending of the dose of doxorubicin, it is possible to obtain a model of heart dilatation and ventricular hypokinesia with or without clinical symptoms of HF, with a different mortality. (J Card Surg 2003; 18:307-311)" @default.
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- W2077338034 date "2003-07-01" @default.
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- W2077338034 title "Induction of Chronic Cardiac Insufficiency by Arteriovenous Fistula and Doxorubicin Administration" @default.
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- W2077338034 doi "https://doi.org/10.1046/j.1540-8191.2003.02044.x" @default.
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