Morphine Onthe Cardiovascular System

Morphine, by a central action, impairs sympathetic vascular reflexes (causing veno- and arteriolar dilatation) and stimulates the vagal centre (bradycardia); it also releases histamine (vasodilatation). These effects are ordinarily unimportant, but they can be beneficial in acute left ventricular failure, relieving mental distress by tranquillising, cardiac distress by reduction of sympathetic drive and preload (by venodilatation), and respiratory distress by rendering the centre insensitive to afferent stimuli from the congested lungs.

Other effects of morphine include sweating, histamine release, pruritus and piloerection.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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