What question did this study set out to answer?

To determine whether endothelium-dependent vasodilation to acetylcholine is specifically depressed in the femoral artery during experimental heart failure.

April 1, 1989AJP Heart and Circulatory Physiology

Heart failure depresses endothelium-dependent responses in canine femoral artery

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Authors

LKL KaiserHeinrich Heine University Düsseldorf RSRichard C. SpickardMichigan State University NON. Bari OlivierCentre Hospitalier Universitaire de Martinique

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Implication

Experimental study demonstrates depressed acetylcholine-induced arterial relaxation in pacing-induced canine heart failure, indicating impaired local endothelial regulation.

Key Points

To determine whether endothelium-dependent vasodilation to acetylcholine is specifically depressed in the femoral artery during experimental heart failure.
Experimental heart failure was induced in 11 purebred beagles via rapid ventricular pacing for approximately 30 days.
Femoral artery diameter was recorded via sonomicrometry during dose-response challenges with acetylcholine, norepinephrine, and nitroglycerin before and after cyclooxygenase inhibition with indomethacin.
Heart failure caused a significant depression of femoral artery relaxation to acetylcholine across all tested concentrations.
Cyclooxygenase inhibition with indomethacin enhanced the arterial dilation response to low concentrations of acetylcholine in dogs with heart failure.
Vasoconstriction to norepinephrine and endothelium-independent vasodilation to nitroglycerin remained unchanged in heart failure.

Cite This Study

Kaiser et al. (1989) studied this question.

synapsesocial.com/papers/69eedeea0fb71af24d31161a https://doi.org/10.1152/ajpheart.1989.256.4.h962

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Implication

Experimental study demonstrates depressed acetylcholine-induced arterial relaxation in pacing-induced canine heart failure, indicating impaired local endothelial regulation.

Heart failure depresses endothelium-dependent responses in canine femoral artery

Discussion

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Implication

Key Points

Cite This Study

Heart failure depresses endothelium-dependent responses in canine femoral artery

Discussion

Member takes

Implication

Key Points

Cite This Study

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