NHA EKG certification study guide questions with correct answers 2025

NHA EKG certification study guide questions
with correct answers 2025
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WhatWisWaWmoreWmedicallyWcorrectWtermWforWtheWclottingWofWanWartery?W-WCORRECTWANSWERW-
Occlusion



WhenWtheWAtriaWdepolarizeW(orWcontract),WwhatWisWshownWonWtheWEKGWtracing?W-WCORRECTWANSWERW-
PWWave



aVRWpicksWupWfromWtheWcenterWofWtheW___WtoWtheW___W___.W

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AnWirregularWheartbeatWthatWisWcommonWamongWchildrenWisWcalledW_____W_____.W-
WCORRECTWANSWERW-SinusWArrhythmia




1WsmallWboxWonWanWEKGWstripWdenotesW0.04WsecondsWofWtime.WHowWlongWisWthisWrepresentedWinWmillim
eters?W-WCORRECTWANSWERW-1Wmm



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WhatWisWtheWtermWusedWtoWdescribedWtheWamountWofWbloodWpumpedWbyWtheWheartWperWminute?W-
WCORRECTWANSWERW-CardiacWOutput




LeadsWIWthroughWIIIWareWcollectivelyWknownWas?W-WCORRECTWANSWERW-StandardWLeads



LeadWIIWpicksWupWfromWtheW___W___WtoWtheW___W___.W(AddW"toWthe"WinWyourWanswer.)W-
WCORRECTWANSWERW-RightWArmWtoWtheWLeftWLeg




LeadsWV1WthroughWV6WareWcollectivelyWknownWasW

, (Hint:WChest)W-WCORRECTWANSWERW-PrecordialWLeads



WhatWisWtheWmainWarteryWinWtheWarterialWsystem?

(Hint:WItWcarriesWoxygenatedWbloodWtoWtheWheartWandWotherWpartsWofWtheWbody.)W-WCORRECTWANSWERW-
Aorta



aVLWpicksWupWfromWtheWcenterWofWtheW___WtoWtheW___W___.W

(AddW"toWthe"WinWyourWanswer.)W-WCORRECTWANSWERW-HeartWtoWtheWLeftWArm



aVR,WaVL,WandWaVFWareWcollectivelyWknownWas?W-WCORRECTWANSWERW-AugmentedWLeads



LeadWIIIWpicksWupWfromWtheW___W___WtoWtheW___W___.W(AddW"toWthe"WinWyourWanswer.)W-
WCORRECTWANSWERW-LeftWArmWtoWtheWLeftWLeg




LegWelectrodesWareWonlyWusedWfor?W-WCORRECTWANSWERW-Grounding



aVFWpicksWupWfromWtheWcenterWofWtheW___WtoWtheW___W___.W

(AddW"toWthe"WinWyourWanswer.)W-WCORRECTWANSWERW-HeartWtoWtheWLeftWLeg



WhatWisWtheWmainWveinWinWtheWvenousWsystem?W(Hint:WItWcarriesWdeoxygenatedWbloodWfromWtheWlungsWt
oWtheWheart'sWrightWatrium.)W-WCORRECTWANSWERW-SuperiorWVenaWCava



WhenWtheWheartWisWinWaWSystolicWState,WwhatWpacemakerWreleasesWanWelectricalWimpulse?W-
WCORRECTWANSWERW-AVWNode




V5,WlocatedWonWtheWanteriorWaxillaryWlineW(AAL),WshouldWbeWplacedWhalfwayWbetweenWwhichWtwoWleads
?W-WCORRECTWANSWERW-V4WandWV6



TheWMitralWValveWisWalsoWknownWasWtheW___W___.W-WCORRECTWANSWERW-BicuspidWValve