|
Title: What is the general relationship between blood pressure and blood flow in the body? Post by: o2blea on Sep 30, 2012 Heart failure causes blood pressure to increase via vasoconstrictors. How does this help blood flow or cardiac input (venous return)!?...Based on what I know from physics it would decrease blood flow and ultimately cause less venous return (since there would be an increase in resistance). Furthermore, vasoconstrictors like angiotensin II would not help combat the lower cardiac output and thus ischemia. Why is the body so obsessed with increasing blood pressure in conditions of low blood flow, when pressure doesn't give an indication of blood flow?
Title: What is the general relationship between blood pressure and blood flow in the body? Post by: tomsawyer on Sep 30, 2012 Content hidden
|