NR565 FINAL EXAM QUESTIONS WITH CORRECT ANSWERS 2025

NR565 FINAL EXAM QUESTIONS WITH
CORRECT ANSWERS 2025
WhatRlabsRareRusedRtoRdiagnoseRthyroidRfunction?R-RCORRECTRANSWERR-1.RSerumRthyroid-
stimulatingRhormoneRtestR(TSH)

2.RSerumRthyroxineRtestR(TotalRorRFreeRT4)

3.RSerumRtriiodothyronineRtestR(TotalRorRFreeRT3)



s/sRhypothyroidismR-RCORRECTRANSWERR-
SignsRandRsymptomsRofRhypothyroidismRdependRonRdiseaseRseverity.RTheRfaceRisRpale,Rpuffy,RandRexpressi
onless;RskinRisRcoldRandRdry;RhairRisRbrittle;RhairRlossRoccurs;HeartRrateRandRtemperatureRareRlowered.RTheR
patientRmayRcomplainRofRlethargy,Rfatigue,RandRintoleranceRtoRcold.RMentationRmayRbeRimpaired.



s/sRhyperthyroidismR-RCORRECTRANSWERR-
Exophthalmos;RHeartbeatRisRrapidRandRstrong;RdysrhythmiasRandRanginaRmayRdevelop;Rnervousness;Rinso
mnia,RrapidRthoughtRflow;RrapidRspeech;RSkeletalRmusclesRmayRweakenRandRatrophy;RMetabolicRrateRisRrais
ed,RresultingRinRincreasedRheatRproduction,RincreasedRbodyRtemperature,RintoleranceRtoRheat,RandRskinRth
atRisRwarmRandRmoist.RAppetiteRisRincreased,RbutRweightRlossRmayRstillRoccur.



WhenRshouldRyouRre-checkRlabsRafterRinitiatingRLevothyroxine?R-RCORRECTRANSWERR-TSHR6-
8RweeksRafterRinitiationRorRdoseRchanges.



S/SRofRThyrotoxicRCrisisR(ThyroidRStorm)R-RCORRECTRANSWERR-
profoundRhyperthermiaR(105°FRorRevenRhigher),RsevereRtachycardia,Rrestlessness,Ragitation,RandRtremor.RU
nconsciousness,Rcoma,Rhypotension,RandRheartRfailureRmayRoccur

*ExcessiveRlevelsRofRthyroidRhormonesR(occursRafterRsurgeryRorRintercurrentRillnessR(e.g.Rsepsis)



TreatmentRofRthyroidRstormR-RCORRECTRANSWERR-*MEDICALREMERGENCY*R

1.HighRdosesRofRpotassiumRiodideRorRstrongRiodineRsolutionRareRgivenRtoRsuppressRthyroidRhormoneRreleas
e.R

2.MethimazoleRisRgivenRtoRsuppressRthyroidRhormoneRsynthesis.R3.ARβ-
blockerRisRgivenRtoRreduceRheartRrate.R



AdditionalRmeasuresRincludeRsedation,Rcooling,RandRgivingRglucocorticoidsRandRIVRfluids.

,WhatRcanRresultRfromRnotRtreatingRhypothyroidismRduringRpregnancy?R-RCORRECTRANSWERR-
permanentRneuropsychologicalRdeficitsRinRtheRchild



TreatmentRofRhyperthyroidismR-RCORRECTRANSWERR-1.RsurgicalRremovalRofRthyroidRtissue

2.RdestructionRofRthyroidRtissueRwithRradioactiveRiodineR(preferredRforRadults)

3.RantithyroidRdrugR(methimazoleRorRpropylthiouracil).R(preferredRforRyoungerRpatients)R



β-BlockersRsuppressRtachycardiaRbyRblockingRβ-receptorsRonRtheRheart.

NonradioactiveRiodineRinhibitsRsynthesisRandRreleaseRofRthyroidRhormones.



DrugsRthatRreduceRabsorptionRofRlevothyroxineR-RCORRECTRANSWERR-
HistamineR2R(H2)RreceptorRblockersR(e.g.,RcimetidineR[Tagamet])

ProtonRpumpRinhibitorsR(e.g.,RlansoprazoleR[Prevacid])

SucralfateR(Carafate)

CholestyramineR(Questran)

ColestipolR(Colestid)

Aluminum-containingRantacidsR(e.g.,RMaalox,RMylanta)

CalciumRsupplementsR(e.g.,RTums,ROs-Cal)

IronRsupplementsR(e.g.,RferrousRsulfate)

MagnesiumRsalts

OrlistatR(Xenical)



*administerR4RhoursRapartRfromRlevothyroxine*



FoodRinteractionsRwithRlevothyroxineR-RCORRECTRANSWERR-
FoodRdecreasesRabsorption.RShouldRbeRtakenRonRanRemptyRstomachR30-60RminutesRpriorRtoRbreakfast



DrugsRthatRaccelerateRlevothyroxineRmetabolismR-RCORRECTRANSWERR-phenytoinR(Dilantin)

carbamazepineR(Tegretol,RCarbatrol)

, rifampinR(Rifadin)

sertralineR(Zoloft)

phenobarbital.



*ToRmaintainRadequateRlevothyroxineRlevels,RpatientsRtakingRtheseRdrugsRmayRneedRtoRincreaseRtheirRlevo
thyroxineRdosage.



*DigoxinRandRInsulinRmayRhaveRmoreRrequirementsRwhenRtakingRlevothyroxine



WhichRlaboratoryRtestsRshouldRbeRcompletedRbeforeRprescribingRmethimazole?R-RCORRECTRANSWERR-
freeRtriiodothyronineR(T3)

freeRthyroxineR(T4)

LFTs

thyroid-stimulatingRhormoneR(TSH)

CBC



WhichRagentRisRtheRpreferredRtreatmentRoptionRforRthyroidRstorm?R-RCORRECTRANSWERR-
PTUR(propylthiouracil)



WhichRagentRisRtheRfirst-lineRtreatmentRforRhyperthyroidismRorRGrave'sRdisease?R-RCORRECTRANSWERR-
methimazole



HowRtoRconfirmRdiabetesRdiagnosisR-RCORRECTRANSWERR-FastingRplasmaRglucoseR≥126Rmg/dLa

Or

RandomRplasmaRglucoseR≥R200Rmg/dLRplusRsymptomsRofRdiabetesb

Or

OralRglucoseRtoleranceRtestR(OGTT):R2-hRplasmaRglucoseR≥200Rmg/dLc

or

HemoglobinRA1cR6.5%RorRhigherR(STANDARDRTEST)