What could cause an increase in the peripheral resistance in a blood vessel?

Question

Also what would happen if the left side of your heart pumped faster than the right side?

Answer 1

Two things will control the resistance of a vessel the diameter of the lumen, and the surface the blood must flow against. The smaller the diameter of the vessel the greater the resistance, the lumen can get smaller due to the muscle of the vessel contracting, or atherosclerosis. Atherosclerosis can also plaque the inside of the vessel and eliminate the smooth laminar flow of blood this will cause turbulant blood flow and increase the resistance to blood flow. The second part of your question, states that the left heart could beat faster than the right, it cannot. One side of the heart can have a greater blood output but not beat faster just stronger. In a normal heart the left side and right side both pump equal volumes of blood. If one side of the heart begins to pump a lesser amount due to pathology of the heart then things like pulmonary hypertension and congestive heart failure can occur.

Answer 2

Very simple. If you took a pressure in an artery, its area is small, like a hose. The blood leaves the artery and enters the arterioles (small) and then capillaries (very small) The over all pressure will drop as the area of the tube/s increase. These smaller vessels have a very large "collective" or total area, so the pressure should drop. These small vessels have smooth muscles which under chemical influences and cause these to constrict (clamp down), When that happens the Diastolic pressure will rise. example 100/60 open 130/102 closed

Answer 3

either an increase in blood pressure or a decrease in output. if one side of the heart pumps faster than the other it could cause damage to the aortic valve (im reaching here...), as for cause it is most like arrhythmia-related, so look fo info on that.