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B4 Pharmacology Exam 1 Study & Review Guide 2026 A+

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This study guide provides a structured and comprehensive review for B4 Pharmacology Exam 1. It covers essential nursing pharmacology concepts, including drug classifications, mechanisms of action, therapeutic uses, side effects, contraindications, dosage calculations, and safe medication administration. Designed strictly for personal study and reference, this guide reinforces foundational pharm knowledge without reproducing any actual exam questions. Ideal for nursing and health science students preparing to strengthen their medication understanding and succeed in the 2026 pharmacology coursework and exams.

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B4 Pharm Exam 1
How hyperlipidemia leads to heart failure - hyperlip --> athero --> CHD (ie. angina, MI)
and/or HTN --> heart failure

Classes of Antihyperlipidemic Drugs - - HMG-CoA reductase inhibs (statins)
- Bile acid sequestrants
- Chol absorp inhibs
- Fibrates
- Niacin
- Others incl PCSK9 inhibs, HDL elevs, HoFH

Lipoprotein - transp form of lipids made up of lipids+prots since lipids insol in plasma

Chylomicrons - lipoprot synth in intest made of dietary (exog) TGs+chol; most imp
apoprot = ApoB-48

VLDL - lipoprot synth in liver made up of endog/hep TGs; most imp apoprot = ApoB-100

IDL - lipoprot synth from VLDL catab made up of chol esters+endog TGs; most imp
apoprot = ApoB-100

LDL - lipoprot synth from VLDL catab expr in liver+intest, made up of chol esters; most
imp apoprot = ApoB-100

HDL - lipoprot synt in intest, liver, plasma made up of phospholips+chol esters; most
imp apoprot = ApoA

LDL structure - core of chol esters + outer layer of ApoB-100, phospholipids, free chol
mols

Relationship of Lipoprotein xSize x& xDensity x- xlargest xlipoprot x(chylomicrons) xhas
xlowestxdensity; xhighest xdens x= xLp(a) x& xHDL


Exogenous xPathway xof xLipid xMetabolism x- x1). xDiet xTGs+chol xincorp xinto xlarge
xchylomicxlipoprots
2). xChylomics xhydr xby xLPL xon xendoth xsurf xadip+musc, xcleaving xFAs xfrom
xTGsx3). xChylomic xenters xcirc xas xpredom xchol x(chylomic xremnant)
4). xChylomic xremnant xinto xliver xby xrec-med xendocyt

Endogenous xPathway xof xLipid xMetabolism x- x1). xLiver xsecr xTGs+chol xin
xVLDL xform,xmetab xby xLPL x--> xIDL
2). Chol xdens xin xIDL xincr xuntil xLDL xform
3). LDL xinto xliver/periph xtiss xby xLDLR xor xaccum xin xBVs x(athero)
4). HDL xprom xchol xrem xfrom xperiph xcells, xtx xto xapoprot x--> xdeliv xback xto
xliver xforxmetab/excr

,B4 Pharm Exam 1
Pathogenesis xof xAtherosclerosis x- xLDL xmigr xinto xBV xintima, xbind
xproteoglycans x-->xoxid/glycosylated x--> xaldehyde xintermeds xfragmenting
xApoB-100
- endoth xdam x--> xmac xinvasion x--> xendoth+mac xGFs xstim xsm xmusc xmigr xto xtun
xint x(sm xmusc xhyperpl) x--> xoxLDL xaccum xin xmacs x(foam xcells)+musc xcells x-->
xcoll+el xfibs xinto xCTxmatrix xforming xsubendoth xfibr xplaque


Role xof xHyperlipidemia xin xCVD x- xmajor xCHD xRF xincl xac xMI, xac+chron xIHD,
xanginaxpectoris, xathero xCVD
- gen+EVRal xfacs xincr xserum xlipoprot xlev
- athero x= xpredom xMI xcause xby xturb xbl xflow xaround xcor xart xplaque xprod xoccl
xthrombus


Antihyperlipidemic xDrugs xfor xTreatment xof xHypercholesterolemia x- x- xHMG-CoA
xReductase xInhibs x= xAtorvastatin, xLovastatin, xPravastatin, xSimvastatin, xFluvastatin,
xPitavastatin, xRosuvastatin
- Bile xAcid xSequestrants x= xColestipol, xCholestyramine, xColesevelam
- Chol xAbsorp xInhibs x= xEzetimibe

Antihyperlipidemic xDrugs xfor xTreatment xof xHyperTG x- x- xFibrates x= xGemfibrozil,
xFenofibrate, xFenofibric xAcid
- Niacin

Statins xin xorder xfrom xleast xLDL-lowering xto xgreatest xLDL-lowering x- x- xFluvastatin
- Lovastatin
- Pravastatin
- Simvastatin
- Pitavastatin
- Atorvastatin
- Rosuvastatin

MOA x& xPharm xConsequences xof xHMG-CoA xReductase xInhibitors x- x- xMOA x= xinhib
xHMG-xCoA xreduc xconv xHMG-CoA xto xmevalonic xac xin xchol xbiosynth x(rate-lim xstep)
- inhib xHMG-CoA xred x--> xdecr xchol xsynth xw/in xcell x--> xupreg xLDLR xsynth x-->
xincr xuptakexLDL xfrom xbl, xdecr xserum xLDL, xdecr xVLDL xsecr xby xliver xby xlack xraw
xmats xfor xVLDL xsynth


Overall xPharmacological xEffects xof xStatin xTreatment xon xLipids x- x- xdecr xLDL-C
- decr xVLDL-C
- incr xHDL-C xin xsome xpts xby xincr xApoA-1 xsynth
- decr xserum xTG xby xdecr xVLDL-C
- Atorv, xLova, xPrava, xSimva x--> xdecr xfat+non-fat xCHD xev, xdecr xstroke, xdecr xtotal
xmort


Mode xof xexcretion xfor xmost xstatins x- xbiliary/fecal xexcr

Examples xof xlong-acting xstatins x- x- xAtorvastatin x(t1/2 x= x14 xhr x--> xonce-daily xdose)
- Rosuvastatin x(t1/2 x= x19 xhr x--> xonce xdaily xdose)
- Pitavastatin x(t1/2 x= x12 xhr)

,B4 Pharm Exam 1
Why xdoes xPravastatin xpresent xwith xless xAEs xand xDIs xthan xother xstatins? x- xlow
xprot xbinding x& xdoes xNOT xreq xCYP450 xenz xfor xmetab x--> xlow xint xw/ xother
xdrugs/body xprots x&xexcr xlargely xunchanged xfrom xparent xcomp


Beneficial xCV xEffects xof xStatins x- x- xendoth xfunc ximprov
- incr xathero xplaque xstab x(ie. xbefore xsurg)
- anti-infl
- lipoprot xoxid xinhib
- anticoag xby xplt xaggreg+plt xthrombi xinhib

Statins xw/ xgreatest xeffects xon xTGs x(used xfor xMixed xHyperlipidemia) x- x- xAtorvastatin
- Rosuvastatin

Use xof xAtorvastatin+Amlodipine x(Caduet) x- xAmlodipine x= xCa2+ xchann xblocker
x(vasodil)
- combo xfor xHTN/angina x+ xhyperchol

Statins xfor xtreatment xof xchildren xw/ xHeterozygous xFamilial xHypercholesterolemia
x(LDLRxdefect) x- x- xAtorvastatin
- Lovastatin
- Simvastatin
- Pravastatin

Potential xnon-CV xuses xof xstatins x- x- xClin xTrials x= xmaybe xprot xag xosteop, xcancer
- recent xfindings xthat xboost xerec xfunc

AEs x& xCIs xof xStatins x- x- xAEs x= xGI x(cramps, xconstip, xdiarr, xheartburn) xmost
xcomm; xliverxtox; xRHABDOMYOLYSIS x= xpot xfat xstat-ind xmyop xby xcell xmemb
xcomp x+ xelec xprops xalterations x--> xdiscont xstatin xif xoccurs
- CIs x= xpreg+nursing xwomen xb/c xchol xsynth xnec xfor xfet xgrowth

DIs xof xStatins x- x- xcaution xw/ xfibric xac xderivs xb/c xcan xalso xcause xmyops
- Erythromycin x& xItraconazole x--> xinhib xstatin xmetab x--> xincr xAEs xlike xmyop
- decr xmetab/incr xlevels xof xCYP450 xsubstrates x(Warfarin)

Effects xof xStatin-Induced xRhabdomyolysis xon xKidneys x- xstatins xalter xmusc xcell
xmembxcomp x--> xweak xmyocytes x--> xmusc xprot xleak x--> xdecr xelec xprops x&
xlodging xprots xin xkidney x--> xac xkidney xfail


Examples x& xMOA xof xBile xAcid xSequestrants x(binding xresins) xfor
xHypercholesterolemia x-xincl xCholestyramine, xColestipol, xColesevelam
- MOA x= xlarge xmol xwt xpolyms xbinding xgut xbile xac, xexcr xin xfeces xblocking
xenterohep xbile xac xcycling x(BAS xtoo xlarge xfor xliver xabsorp) x--> xmore xliv xchol
xused xfor xBA xsynth x--> xupregxliv xLDLR x--> xdecr xLDL-C

, B4 Pharm Exam 1
Therapeutic xUses, xAEs, xDIs xof xBile xAcid xSequestrants x- x- xUses x= xmod xeffec
xhypercholxtreatement x(red xLDL-C xbut xmay xincr xTG+VLDL), xoften xcombo xw/
xstatins; xtreatment xdiarr+itching xcaused xby xexcess xBAs x(BAs xbind xelectros xto
xabsorb xin xintest+stool)
- AEs x= xgen xwell-tol, xmild xGI xsx, xskin xrash
- DIs x= xbind xdigoxin, xthyroxin, xwarfarin; xVit xK xmalabs x--> xprolonged
xprothrombin xtimex(decr xclotting)


MOA x& xPK xof xEzetimibe x- x- xMOA x= xchol xabsorp xinhib xby xsel xinhib xNPC1L1 xchol
xtransp xprot xbrush xbord xcells, xdecr xchol xtransp xfrom xmicelles xinto xenteros xby x50%
xw/o xred xTG/fat-xsol xvit xabsorp
- single xdaily xdose x--> xdecr xLDL x15-20% x+ xTG x8%, xincr xHDL x3%
- esp xeffec xin xcombo xw/ xstatin
- PK x= xrap xabsorb xfrom xintest xafter xor xadmin, xmetab xin xintest+liver xforming
xezetimibe- xglucuronide xconjug x(highly xwater-sol xby xgluc xac, xbetter xexcr);
xenterohep xcirc xw/ xt1/2 x= x22xhrs


Therapeutic xUses x& xAEs xof xEzetimibe x- x- xUses x= xmost xcomm xnonstatin
xagent xforxlowering xLDL; xalone/combo xw/ xstatins xfor xhyperchol xtreatment
- Ezetimibe+Simvastatin x(Vytorin) x= x60% xLDL xred xfor xhomoz xfam xhyperchol
- AEs x= xgen xwell-tol xbut xsome ximpair xliv xfunc, xdyspepsia, xmyalgia, xrare xmyop, xHA

Use xof xBile xAcid xSequestrants xif xHigh xTGs x- xBA xseqs xred xLDL-C xby x15-30% xbut
xnot xabsxso xno xsyst xeffects, xbut xassoc xw/ xGI xsx x(constip) x& xcan xcause xsev
xhyperTG xif xfasting xTG x300+


Examples x& xActions xof xFibrates x(fibric xacid xderivatives) x- xincl xGemfibrozil,
xFenofibrate,xFenofibric xAcid
- xdecr xTGs x(40-50%), xdecr xLDL-C x(10%), xincr xHDL-C x(10-20%)

MOA xof xFibrates xfor xLowering xVLDL-TGs x- xbind+activ xPPAR-alpha x(peroxisome
xprolif xactiv xrec xalpha) x--> xincr xLPL xexpr, xdecr xApoC-III x(LPL xinhib) xexpr x--> xincr
xhydr+rem xVLDLxTGs x& xchylomic xTGs x--> xdecr xplasma xTGs
- also xactiv xPPAR-alpha x--> xincr xexpr xFA xoxid xenz x--> xdecr xTG xsynth

MOA xof xFibrates xfor xLowering xLDL-C x& xIncreasing xHDL-C x- xactiv xPPAR-alpha x-
-> xincrxliver xLDLR xexpr x--> xincr xLDL xuptake xby xliver x--> xdecr xLDL-C
- also xactiv xPPAR-alpha x--> xincr xFA xoxid x--> xdecr xTG xsynth x--> xdecr xVLDL xform
x--> xdecrxLDL xform x(prod xof xVLDL xby xliver)
- activ xPPAR-alpha x--> xincr xApoA-I x& xApoA-II xsynth x(HDL xcomps) x--> xincr xHDL
xform x-->xincr xHDL-C


Therapeutic xUses, xAEs, xDIs xof xFibrates x- x- xUses x= xprim xfor xhyperTG x& xHDL xdef;
xalso xforxcomb xhyperchol x& xhyperTG
- AEs x= xGI xsx, xmyops x(rhabdo), xincr xrisk xcholelithiasis
- DIs x= xcomb xw/ xstatins x(Rosuva, xPrava) xfor xcomb xhyperlip/decr xHDL

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Subido en
2 de diciembre de 2025
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Escrito en
2025/2026
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