2007-09-09 20:25:41 · 7 answers · asked by Claire _leoo 2 in Health ➔ Diseases & Conditions ➔ Heart Diseases
This is known as decompensation vasodilator mechanism, or reflex phenomena.
Let me give you an e.g. when nitrates are given the veins dilates resulting in dilatation of coronary arteries and other arteries and veins of CVS.
This results in fall of blood pressure.
Hope answered the question.
2007-09-16 08:23:10 · answer #1 · answered by Dr.Qutub 7 · 2⤊ 0⤋
In most cases of increased velocity it is due to a stenosis or thickening of a valve or blood vessel. This allows less blood to go through the narrowed part and leads to a lower blood pressure past the narrowing. This can be seen especially with Aortic stenosis which ultimately reduces cardiac output (the blood being pumped out of the heart) and less blood in the blood vessels lead to low blood pressure.
A difficult concept to explain but I tried.
2007-09-13 15:56:35 · answer #2 · answered by ItRose 2 · 0⤊ 0⤋
BP increases because the velocity simply increase adding pressure in to the blood to move about
2007-09-17 14:03:36 · answer #3 · answered by Arrah Joyce G 1 · 0⤊ 0⤋
because the velocity of arterial blood decreases,increasing veins volecity acts to store blood and decrease arterial blood
2007-09-09 21:09:59 · answer #4 · answered by ari 2 · 0⤊ 0⤋
The faster the blood particles are moving through the veins, the less time they will spend colliding with the walls around the same area. Thus, they will exert less pressure.
2007-09-09 20:34:24 · answer #5 · answered by Steven B 6 · 0⤊ 0⤋
to increase the velocity you need to pump more blood through the veins, you body has only so much blood, so your heart pumps all the blood out and then it doenst have any more left to pump, creating low blood pressure.
2007-09-09 20:34:05 · answer #6 · answered by Don A 4 · 0⤊ 0⤋
confusing thing. search at the search engines. that will help!
2016-03-18 03:13:24 · answer #7 · answered by ? 4 · 0⤊ 0⤋