calculated blood vessel maximum contractile force measurement +
concentration of vasoconstrictor at which the force of blood vessel contraction is half the maximum value (EC50) +
logarithm of the concentration of vasoconstrictor at which the force of blood vessel contraction is half the maximum value (Log EC50) +
slope measurement of chemical-induced contraction +
vasoconstrictor-induced blood vessel contractile force expressed as percent of force at baseline +
A calculated measurement in which the difference between the contractile force of a blood vessel in response to a vasoconstrictor and the baseline contractile force exerted by that vessel in the absence of any external stimuli, is divided by the baseline contractile force measurement and the result expressed as a percentage. A vasoconstrictor is any agent or condition that narrows blood vessels by constricting the smooth muscle in the vessel walls.