The most common cause of renal artery stenosis is atherosclerosis, the same condition that causes narrowing of the arteries in coronary heart disease and stroke, and the risk factors are the same as well. Cholesterol plaques build up along the walls of the renal artery and gradually cause narrowing.
Oxytocin is a commonly used uterotonic that can cause significant and even fatal hypotension, particularly when given as a bolus. The resulting hypotension can be produced by a decrease in systemic vascular resistance or cardiac output through a decrease in venous return.
Making the world better, one answer at a time. Oxytocin and ADH are synthesized by Hypothalamic neurons in the Hypothalamus and then transported along the hypothalamic-hypophyseal tract to the posterior pituitary where they are stored in axon terminals and are released into the blood when the hypothalamic neurons are fired. Minor edit?