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RICKY'S CFRN STUDY GUIDE Questions and Answers Updated 2026

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RICKY'S CFRN STUDY GUIDE Questions and Answers Updated 2026

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RICKY'S CFRN STUDY GUIDE Questions and Answers Updated 2026

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RICKY'S CFRN STUDY GUIDE
Questions and Answers Updated
2026
MIMPATTERNSM-MAnswerMLISAMP.

LATERAL:MI,aVL,Mv5,v6M(LCA/RCA-highMlateralMwallMLMVent)

INFERIOR:MII,MIII,MaVFM(RCA-inferiorM&MposteriorMwallMLMVent)

SEPTAL:MV1,MV2M(LCA/bundleMbranches)

ANTERIOR:MV3,MV4M(LCA-anteriorMwallMLMVent)

POSTERIOR:MV1,V2,V3,V4:STMDepressionM(RCA/LCA-LMVentMposteriorMwall)

Charles'sMLawM-MAnswerMGasMpressureMincreasesMasMTempMincreases

GasMexpandsMinMaMheatedMtank

HenryM'sMLawM-MAnswerMDecompression

Dalton'sMLawM-
MAnswerMMoleculesMshrinkMunderMpressure.MItMtakesMmoreMmoleculesMtoMfillMtheMsam
eMspace.MMoreMaltitude=moreMO2Mneeded.

Graham'sMLawM-
MAnswerMDiffusionMrateMofMgasMthruMaMliquidMisMrelatedMtoMsolubilityMofMtheMgas.M
HigherMtoMLowerMConcentrations.M(mucousMinMtheMlungsMwithMO2

Boyle'sMLawM-
MAnswerMTrappedMgasMexpandsMwithMaltitude.M(AirMsplints,MChestMtubes,METMTubes,MB
owels)

Gay-Lussac'sMLawM-
MAnswerMPressureMinMtheMtanksMgoMdownMasMtemperatureMgoesMdown

MurphyMSignM-
MAnswerMGallbladder,MunableMtoMtakeMdeepMbreathMuponMpalpationMunderMtheMrightM
ribs.

,CullenMSignM-
MAnswerMRetroperitonealMbleed,Mpancreatitis,MTrauma,MBruisingMofMtheMumbilicus.

Grey-TurnerMSignM-
MAnswerMRetroperitonealMbleed,Mpancreatitis,MTrauma,MBruisingMofMtheMflanks.

AsterixisM-MAnswerMLiver,MHepatitis,MHandsMheldMoutMandMshaking

Cushing'sMReflexM-
MAnswerMIncreasedMICP,MwideningMpulseMpressure,Mbradycardia,MrespMchangesM(cheyneM
stokes).

RBC,MHGB,MHCTM-MAnswerM5,M15,M45

WBCM-MAnswerM4000-10,000

PLTM-MAnswerM150,000-400,000

K+M(Potassium)M-MAnswerM3.5-5.0

CreatM-MAnswerM0.8-1.4

GlucoseM-MAnswerM65-110

ClM(Cloride)M-MAnswerM95-105

SodiumM-MAnswerM135-145

BUNM-MAnswerM7-20

PhosM-MAnswerM2.4-4.1

, AMYM-MAnswerM60-160

LIPM-MAnswerM<160

UrineMpHM-MAnswerM4.8-7.5

AnionMGapM-MAnswerM8-16,MgreaterMthanM16=metabolicMacidosis

LactateM-MAnswerM>2=abnormal

>3=lacticMacidosis

>4=significantMhypoperfusion

FibrinMDegregationM-MAnswerMDIC

>40Mug/ml=Critical

PTM-MAnswerM11-13MsecondsM(Coumadin)

PTTM-MAnswerM25-35MsecondsM(Heparin)

PT/INRM-MAnswerM0.9-1.2M(Coumadin)

CranialMNervesM1-6MofM12M-MAnswerM1:Molfactory-smell

2:Moptic-vision

3:Mocculomotor-eyeMopening/pupilMconstriction

4:Mtroclear-up/downMeyeMmovement

5:Mtrigeminal-chewing/MfacialMsensation

6:Mabducens-right/leftMeyeMmovement

CranialMNervesM7-12MofM12M-MAnswerM7:Mfacial-taste/MmouthMmovement/Mtears/Msaliva

8:Macoustic-hearing/Mequilibrium

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