EKG EXAM 1 QUESTIONS AND CORRECT VERIFIED ANSWERS

EKG EXAM 1 QUESTIONS AND CORRECT
VERIFIED ANSWERS
1stA2degreeA2AVA2blockA2-A2Ans--
NormalA2sinusA2rhythmA2butA2PRA2intervalA2isA2prolonged
PRA2intervalA2>A2.20A2secondsA2-A2conductionA2isA2delayedA2atA2AVA2node

2ndA2degreeA2AVA2blockA2TypeA21A2(Wenckebach)A2-A2Ans--MoreA2PA2wavesA2thanA2QRS
PRA2intervalA2progressivelyA2increasesA2inA2aA2cycleA2untilA2PA2appearsA2w/oA2QRS
occasionalA2droppedA2beat
RRA2intervalsA2notA2regular

2ndA2degreeA2AVA2BlockA2TypeA22A2-A2Ans--MoreA2PA2wavesA2thanA2QRSA2
PRA2intervalA2isA2*consistentA2andA2normal*
multipleA2droppedA2beats
QRSA2regularA2width

3rdA2degreeA2AVA2blockA2(completeA2heartA2block)A2-A2Ans--
MoreA2PA2wavesA2thanA2QRS;A2
SometimesA2theA2PA2wavesA2areA2hiddenA2withinA2theA2TA2waveA2
NoA2patternA2toA2PRA2interval,A2variableA2
R-RA2alwaysA2regular
NoA2atrialA2impulsesA2areA2conductedA2throughA2theA2AVA2node.A2HeartA2hasA2regularA2atr
ialA2activityA2andA2regularA2ventricularA2activity,A2butA2theA2activitiesA2areA2notA2coordinate
dA2withA2eachA2other.

VentricularA2tachycardiaA2-A2Ans--TachycardicA2rhythm
NoA2PA2waves
*Wide*A2QRSA2
MayA2orA2mayA2notA2haveA2aA2pulseA2(oneA2ofA2theA2fourA2pulse-lessA2rhythms)

AtrialA2flutterA2-A2Ans--RegularA2rhythmA2andA2normalA2rateA2usuallyA2
PA2wavesA2areA2present,A2butA2thereA2areA2*extraA2ones*
Saw-toothA2PA2waves
QRSA2normal

SinusA2BradycardiaA2-A2Ans--BradycardicA2rate
RegularA2rhythm
PA2wavesA2areA2presentA2forA2eachA2QRS.A2NoA2droppedA2PA2waves

PVCA2(PrematureA2VentricularA2Contraction)A2-A2Ans--R-
RA2intervalA2notA2regularA2(irregularA2rhythm)
AbsentA2PA2waves
WideA2QRSA2greaterA2thanA20.12A2seconds;A2notchedA2andA2bizarre

, atrialA2fibrillationA2-A2Ans--IrregularlyA2irregularA2rhythm
chaoticA2electricalA2activity
NoA2obviousA2PA2wavesA2
NoA2PRA2intervalA2
QRSA2normal

PrematureA2AtrialA2ContractionsA2(PAC)A2-A2Ans--RegularlyA2irregularA2
PA2wavesA2presentA2forA2eachA2QRS,A2butA2areA2earlyA2andA2upright,A2differentA2fromA2sin
us
PR:A20.12-0.20A2seconds;A2differentA2fromA2sinus

VentricularA2fibrillationA2(V-fib)A2-A2Ans--
Disorganized,A2ineffectiveA2twitchingA2ofA2theA2ventricles,A2resultingA2inA2noA2bloodA2flowA2
andA2aA2stateA2ofA2cardiacA2arrest.
NoA2pulse.A2CanA2beA2coarseA2orA2fine.

SupraventricularA2tachycardiaA2-A2Ans--Rate:A2overA2150A2bpm
Regularity:A2Regular
P-Wave:A2NONEA2(hiddenA2inA2theA2TA2waves)
PRA2Interval:A2NONE
QRSA2Width:A2.04-.12A2(normal)
SpecialA2Markers:A2Fast,A2Regular,A2Narrow,A2
DifferenceA2betweenA2thisA2andA2A-TachA2youA2willA2notA2seeA2P-Waves

PrematureA2JunctionalA2ContractionA2(PJC)A2-A2Ans--
QRSA2thatA2comesA2earlyA2andA2eitherA2*LACKSA2aA2PA2wave*,A2hasA2anA2invertedA2PA2w
ave,A2orA2retrogradeA2PA2waveA2afterA2QRS
irregularA2rhythm

normalA2sinusA2rhythmA2-A2Ans--NormalA2rate:A260-100A2bpm
NormalA2rhythm
PA2wavesA2presentA2forA2eachA2QRSA2interval
PA2wavesA2allA2lookA2theA2same
NoA2droppedA2beatsA2
PRA2intervalA2normalA20.12-.20
QRSA2lessA2thanA20.12

TorsadesA2deA2pointesA2-A2Ans--Rate:A2120A2-A2200A2usually
PA2wave:A2ObscuredA2byA2ventricularA2waves
QRS:A2WideA2QRSA2-A2"TwistingA2ofA2theA2Points"
Conduction:A2VentricularA2only
Rhythm:A2SlightlyA2irregular
ResultsA2fromA2QTA2prolongationA2andA2magnesiumA2deficiency