FUNDAMENTALS OF ECG AND BASIC
DYSRHYTHMIAS: PART 1 - A AND P AND
ECG QUESTIONS AND CORRECT
ANSWERS
WhatA2doesA2theA2PA2waveA2represent?A2-A2Ans--
DepolarizationA2ofA2bothA2rightA2andA2leftA2atria
AA2waveformA2isA2movementA2awayA2fromA2theA2baselineA2inA2eitherA2positiveA2orA2negati
veA2direction.A2-A2Ans--True
WhatA2affectsA2preload?A2-A2Ans--VolumeA2ofA2bloodA2inA2ventricles
EctopicA2PA2wavesA2mayA2beA2uprightA2orA2invertedA2andA2originateA2fromA2somewhereA2
otherA2thanA2theA2-A2Ans--SAA2node
WhichA2ofA2theA2followingA2leadsA2wouldA2youA2useA2toA2monitorA2atrialA2rhythmsA2andA2h
emiA2blocks?A2-A2Ans--LeadA21
WhatA2intervalA2measurementA2representsA2theA2completeA2refractoryA2period?A2-A2Ans--
QRSA2toA2peakA2ofA2theA2TA2wave
TheA2ECGA2producesA2anA2uprightA2patternA2onA2theA2paperA2inA2responseA2toA2what?A2-
A2Ans--ElectricityA2flowingA2fromA2theA2heartA2towardsA2aA2positiveA2electrode
TheA2QRSA2isA2smallerA2thanA2theA2PA2wave.A2-A2Ans--False
WhatA2areA2ECGA2artifacts?A2-A2Ans--FalseA2cardiacA2waveforms
ECGsA2areA2usedA2toA2monitorA2theA2effectsA2ofA2newA2medications.A2-A2Ans--True
WhyA2isA2theA2QRSA2largerA2thanA2theA2PA2wave?A2-A2Ans--
VentricularA2depolarizationA2involvesA2greaterA2muscleA2massA2thanA2atrialA2depolarizatio
n.
TheA2electrocardiogramA2(ECG)A2complexA2representsA2theA2electricalA2eventsA2occurrin
gA2inA2_____.A2-A2Ans--OneA2cardiacA2cycle
WhichA2ofA2theA2followingA2leadsA2wouldA2beA2helpfulA2forA2detectingA2sinusA2nodeA2andA2
atrialA2arrhythmias?A2-A2Ans--LeadA2II
DYSRHYTHMIAS: PART 1 - A AND P AND
ECG QUESTIONS AND CORRECT
ANSWERS
WhatA2doesA2theA2PA2waveA2represent?A2-A2Ans--
DepolarizationA2ofA2bothA2rightA2andA2leftA2atria
AA2waveformA2isA2movementA2awayA2fromA2theA2baselineA2inA2eitherA2positiveA2orA2negati
veA2direction.A2-A2Ans--True
WhatA2affectsA2preload?A2-A2Ans--VolumeA2ofA2bloodA2inA2ventricles
EctopicA2PA2wavesA2mayA2beA2uprightA2orA2invertedA2andA2originateA2fromA2somewhereA2
otherA2thanA2theA2-A2Ans--SAA2node
WhichA2ofA2theA2followingA2leadsA2wouldA2youA2useA2toA2monitorA2atrialA2rhythmsA2andA2h
emiA2blocks?A2-A2Ans--LeadA21
WhatA2intervalA2measurementA2representsA2theA2completeA2refractoryA2period?A2-A2Ans--
QRSA2toA2peakA2ofA2theA2TA2wave
TheA2ECGA2producesA2anA2uprightA2patternA2onA2theA2paperA2inA2responseA2toA2what?A2-
A2Ans--ElectricityA2flowingA2fromA2theA2heartA2towardsA2aA2positiveA2electrode
TheA2QRSA2isA2smallerA2thanA2theA2PA2wave.A2-A2Ans--False
WhatA2areA2ECGA2artifacts?A2-A2Ans--FalseA2cardiacA2waveforms
ECGsA2areA2usedA2toA2monitorA2theA2effectsA2ofA2newA2medications.A2-A2Ans--True
WhyA2isA2theA2QRSA2largerA2thanA2theA2PA2wave?A2-A2Ans--
VentricularA2depolarizationA2involvesA2greaterA2muscleA2massA2thanA2atrialA2depolarizatio
n.
TheA2electrocardiogramA2(ECG)A2complexA2representsA2theA2electricalA2eventsA2occurrin
gA2inA2_____.A2-A2Ans--OneA2cardiacA2cycle
WhichA2ofA2theA2followingA2leadsA2wouldA2beA2helpfulA2forA2detectingA2sinusA2nodeA2andA2
atrialA2arrhythmias?A2-A2Ans--LeadA2II