CV Part 2 - Vessel Failure Flashcards
where are aneurysms most common?
aorta or circle of willis
what makes aneurysms more common?
high pressure coming from left ventricle, high number of junctions in circle of willia
what is caused by rupturing of aneurysms?
drop in blood pressure and reduced tissue perfusion
how can aneurysms lead to formation of blood clot?
the static blood in the aneurysm can clot forming a thrombosis
how might a blood clot cause a stroke?
become a thromboembolism and block blood supply to brain
what is Laplace’s law?
arterial wall tension is proportional to pressure times the radius of the arterial conduit
how might the vaso vesorum lead to ischaemia?
the wall stretches and they become further apart so struggles to meet metabolic needs
what is virchows triad?
3 things that effect blockage is changes in vessel wall, changes in blood flow and changes in constituents
what are the different types of embolism?
fat, air, gas, septic, tissue
what type of embolism is likely to occur after surgery?
septic or tissue
what is the consequences of thrombus formation?
MI, strokes, pulmonary embolism, deep vein thrombosis
how might a thromboembolism travel anywhere in the body?
if there is a septal defect this may cause a paradoxical embolism that can deposit anywhere in the body
where abouts does the right side of the heart receive blood from?
the systemic circulation and deposits it into the lungs
where does the left side of the heart receive blood from?
the lungs and deposits it to the rest of the body
what are the 2 different types of strokes?
haemorrhagic or ischaemic
