Coronary reflex is the change of coronary diameter in response to chemical, neurological or mechanical stimulation of thecoronary arteries.The coronary reflexes are stimulated differently from the rest of thevascular system.^{[citation needed]}

• N-nitroL-arginine
• indomethacin
• glibenclamide
• tetraethylammonium chloride
• caffeine

• Cold

Cocaine abuse frequently can cause a coronary spasm, resulting in a spontaneousmyocardial infarction.^{[citation needed]}

• Versed (Midazolam): a coronary dilator. In midazolam's presence, dilation was unaffected by N-nitro L-arginine, indomethacin and glibenclamide.
• Tetraethylammonium chloride, an inhibitor of the BKCa K+ channel (a high conductance Ca2+-sensitive K+ channel), dose dependently attenuated the vasodilating effect ofmidazolam^[1]
• Estrogen has been shown to abolish abnormal cold-induced coronary constriction.^[2]

• Cardiology

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