where do angiotensin converting enzymes take effect

in the lungs
what pregnancy category are ACEI's and ARBs
category D in 2nd and 3rd trimester
when should you hold ACEIs and ARBS
if pt is hypotensive or showing signs of hypotension or if they are hyperkalemic
what is the RAAS
the renin angiotensin aldosterone system
what type of toxicity occurs wih ACEIs
hepatotoxicity because they are synthesized in the liver
what is the first line of treatment for primary vs secondary hypertension
primary - diuretics
secondary - ACEIs
how do ACEIs work
they block the conversion of angiotensinI to angiotensinII in the lungs, it results in decrease in BP and HR, decreases aldosterone secretion to reduce blood volume
what causes most of the adverse effects associated with ACEIs
the accumulation of bradykinin (because ACEIs break down bradykinin causing it to build up)
what are indications for use of ACEIs
-slow progression of heart failure
-lower mortality of recent acute MI
-prophylaxis of cardiac events
-prevent or delay progression of renal disease and retinopathy of diabetics
when are ACEIs contraindicated
-hyperkalemia
-angioedema
-pregnancy
-serious renal impairment
what drug interaction should you be concerned with for ACEIs
-potassium sparing diuretics because combined they can cause hyperkalemia (watch lab work regularly)
-decreased antihypertensive and worsened renal impairment with NSAIDS
- synergistic hypotensive actions with other antihypertensives
what is angioedema
rapid swelling of throat, face, larynx, tongue that can lead to airway obstruction
what is a black box warning for ACEIs
major congenital defects
what is the last name o ACEIs

"pril"
what is the last name of ARBS
"sartans"
what is the prototype drug for ACEIs
lisinopril (Prinivil)
what is the mechanism of action for lisinopril
-binds to and inhibits action of ACE
-decreases serum angiotensin II and reduces aldosterone which results in less sodium and water retention which lowers blood volume and therefore BP
what are adverse effects of lisinopril
-dry persistant cough (due to action being in lungs)
-headache
-dizziness
-orthostatic hypotension
serious
- angioedema
-agranulocytosis
-hepatotoxicity
-hyperkalemia
what are nursing considerations for lisinopril
- check renal labs and potassium levels for hyperkalemia
-monitor BP before admin and 30mins to an hour after
when are ARBS used instead of ACEIs
-liver impairment because you dont need to worry about hepatotoxicity
what are ARBS used for
-HTN
-heart failure
-treat MI
-prophylaxis of CVA
what adverse effects are avoided when ARBs are used instead of ACEIs
-dry cough
-angioedema is less common
what is the prottype drug for ARBS
-losartan (Cozaar)
what is losartan used for
-HTN
-CVA prophylaxis
-prevention of diabetic neuropathy
-off label use for heart failure
what is the mechanism of action of losartan
selectuvely blocks angiotensin AT1 receptors resulting in decreased BP (inhibits effects of angiotensin II)
what are drug interactions of losartan
-decreased antihypertensive action with NSAIDS
-additive hypotensive with other antihypertensies
-hyperkalemia with potassium sparing diuretics
-additive hypotensive effect with alcohol
what are the 4 types of lipid disorders
-hyperlipidemia
-hypercholesterolemia
-dislipidemia
-hypertriglyceridemia
what are the 3 main things to remember about statins
1. avoid grapefruit juice
2. watch liver
3. stop if myopathies occur (rhabdomyolysis, muscle aches)
what is rhabdomyolysis
the breakdown of muscle tissue releases muscle fiber contents into the blood. these substances can cause kidney damage *rare but adverse effect of statins
what is atorvastatin
a antihyperlipidemic
-a HMG-CoA inhibitor
what is a serious adverse effect of statins (atorvastatin)
rhabdomyolysis
what are considerations for atorvastatin
-obtain baseline lipid values
-monitor LDL
-assess for signs of myopathies
-observe for signs of digoxin toxicity
-watch for hepatoxicity (because it has major effects on liver)
what is patient education for atorvastatin
-report signs and symptoms of myopathies
-no alcohol
-no grapefruit juice
what is the last name of statins
statin
what is cholestyramine
bile acid sequestrant (type of antihyperlipidemic)
what is an adverse effect of cholestyramine (bile acid sequestrant)
GI obstruction because drug causes lipids to bulk up and defecate them out
whhat are considerations for cholestyramine
-completely disolve powder before admin
-increase fluid intake
-assess for signs of hypoprothrominbinemia
-monitor lab tests for therapeutic effectiveness
-consult prescriber if vitamins A B and folic acid are necessary
what is important patient education for cholestyramine
-increase fluid intake (so that lipids do not bulk in wrong place and cause GI obstruction)
-consult HCP if necessary to take vitamin A, D and folic acid
-disolve powder completely before admin
what is niacin used for
decrease LDL and triglycerides
What is gemfibrozil?
a fibric acid agent (fibrate) (a antihyperlipidemic agent)