b b b b b
ns and ANSWERS 2026 update
b b b b
b Whichbtwobvalvesbarebopenbduringbventricularbsystole?b-
b ANS>>aorticbandbpulmonicbWhichbtwobvalvesbarebclosedbduringbventricularbsystole?b-
b ANS>>mitralbandbtricuspidbAmountbofbtimebsystolebtakesbinbthebcardiacbcycleb-
b ANS>>1/3bofbcardiacbcyclebAmountbofbtimebdiastolebtakesbinbthebcardiacbcycleb-
b ANS>>2/3bofbcardiacbcycle
HowbdoesbactivationbofbthebRASSbsystembaffectbbothbpreloadbandbafterbload?b-
b ANS>>afterbload:bvasoconstriction
preload:bsodiumbandbwaterbretention
Alwaysbusebanbarmboardbforbpatientsbwithbanb -bANS>>arterialbline
Anbarterialblinebshouldbbebleveledbtob-
b ANS>>thebphlebostaticbaxisb(4thbintercostalbspace/halfwaybpointbbetweenbanteriorbandbposterior)
Causesbofbsinusbtachycardiab-bANS>>1.bStress
2. Dehydration
3. Pain
4. Fever
5. Hypoxia
StarlingsbLawb-
b ANS>>Therebneedsbtobbebadequatebvolumebforbtherebtobbebadequatebstretchbandbcontractility.bThisbisbw
hybwithbhypovolemia,bcontractilitybwillbeventuallybgobdown
Determinantsbofbpreloadb-bANS>>1.bIntravascularbvolume
2. Venousbtone/pressure
3. Intra-pericardialbpressure
4. Bodybposition
5. AtrialbContraction
6. PumpingbActionbNo
rmalbCVPb-bANS>>5
Normalbwedgebpressureb-bANS>>10
,Measuresbofbcontractilityb-
ANS>>CO/CI,bSV/SVI,bEFbNormalbejectionbfractionb-
b
b ANS>>60-65%
Determinantsbofbcontractilityb-b ANS>>1.bPreload/Afterload
2. Ventricularbmusculature
3. Neuralbcontrol
4. Physiologicalbdepressants
5. Drugbtherapy
6. Intrinsicbdepression
7. Electrolytes
NormalbSVRb-bANS>>800-1200
Leadsbthatblookbleftbmainb-bANS>>V1-V6,bLeadb1,bAVL
Leadsbthatblookbatbthebleftbanteriorbdescendingb-bANS>>V2-
V4bCircumflex/CXb-bANS>>Leadb1b&bAvl,bV5b&bV6
Thebratebofbcellbdeathbinbanbacutebmyocardialbinfarctionbisbdependentbonb-
b ANS>>collateralbcirculation
myocardialboxygenbsupplybrestora
tionbofbbloodbflow
Contraindicationsbforbfibrinolyticsb-
b ANS>>AnybpriorbICH,bknownbcerebralbvascularblesion,bknownbmalignantbintracranialbneoplasm,bisch
emicbstrokebwithinb3bmonths,bsuspectedbaorticbdissection,bactivebbleeding,bsignificantbclosedbheadb
orbfacialbtraumabwithinbthreebmonths,bsevereborbuncontrolledbhypertensionb(unresponsivebtobemerge
ncybtherapy)
Ifbfibrinolyticbtherapybisbchosenbasbabprimarybreperfusionbstrategy,bwhenbshouldbitbbebgiven?b-
b ANS>>withinb30bminutesbofbhospitalbarrival
HFrEFb-
b ANS>>EFbofb40%borblessbaccompaniedbbybHFbsymptomsbHFpEFb-
b ANS>>HFbsymptomsbbutbandbEFbgreaterbthanb40%
Stagebvs.bClassbofbHFb-
b ANS>>Stagebrepresentsbthebpresencebofbdisease.bClassbindicatesbthebpresencebofbsymptoms
Classb1bHFbpatientbsymptomsb-
b ANS>>Noblimitationbofbphysicalbactivity.bOrdinarybphysicalbactivitybdoesbnotbcausebunduebfatigue,bp
alpitation,borbdyspneab(shortnessbofbbreath)
, Classb2bHFbpatientbsymptomsb-
b ANS>>Slightblimitationbofbphysicalbactivity.bComfortablebatbrest,bbutbordinarybphysicalbactivitybresultsbi
nbfatigue,bpalpitation,borbdyspnea.
Classb3bHFbpatientbsymptomsb-
b ANS>>Markedblimitationbofbphysicalbactivity.bComfortablebatbrest,bbutblessbthanbordinarybactivitybcause
sbfatigue,bpalpitation,borbdyspnea.