Arteriolar vasodilator
Direct arteriolar vasodilator
- Molecular mechanism unclear
- Reduces afterload
- Reflex tachycardia and fluid retention are the expected consequences
Drugs with this mechanism (1)
- Hydralazine — Direct arteriolar vasodilator; reflex tachycardia, drug-induced lupus.
Self-check
- What cardiac load is reduced by direct arteriolar vasodilation?
Afterload. - What reflex heart-rate response accompanies direct arteriolar vasodilation?
Tachycardia.
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