Vascular disorder Flashcards
what is blood pressure?
the product of CO x PVR
CO=SV x HR
what is HTN?
BP = > 120/80
_____ HTN is not caused by a pre-existing condition _______ is caused by a condition
essential htn= no pre condition
secondary= co morbitiy
who is at risk for essential HTN
- genetics
- african americans
- hyperlipidemia
- overweight or obese
- alcoholism
-stress
who is at risk for secondary hypertension
- kidney dx
- cushing’s dx
- coarctation of the aorta
- brain tumor
- encephalitis
- pregnancy
- medications (HRT, steroids)
- pheochromocytoma
pathophysiology of hypertension
continuous BP elevation causes Medial hyperplasia (thickening) of the arterioles; increase thickening causes decreased perfusion = end organ damage (heart, brain, kidneys)
abnormal organ system complications from hypertension
- MI, CVA, PVD, RF
what type of hypertension is indicated by
- managed outpatient
- managed with oral medications
- acute or chronic
hypertension urgency
a patient with symptoms of end organ damage like MI, ARF/ARI, chest pain, stroke this is most likely what type of hypertension
hypertension emergency
what will the nurse expect for a patient who is in HTN emergency
- expect ICU admission
- IV medications
- tx evolving symptoms
Long term Heart failure treatment includes
- BNP MONITORING
- daily weight
- low fat, low Na diet (2g)
- diuretics, ACE, ARB, CCB, BB, maybe Digoxin
arteriosclerosis
-> thickening/hardening of arterial walls
what is atherosclerosis?
thickening of the arterial walls by plaque formation on vessel walls that obstructs normal blood flow
who is at risk for atherosclerosis
low HDL & high LDL
genetics
AA or hispanics
obesity
stress
smoking
which type of atherosclerosis is less likely to rupture why?
stable is less likely to rupture because the plaque builds up over time, if it does then thrombosis causes inadequate perfusion.