one lead 
atrium or ventricle
may be used for patients in chronic AF (VVI) or sinus node dysfunction and no history of AV block (AAI)

one lead atrium or ventricle may be used ________

Week 3 types of pacemakers

CcpaPrebidFix[default,ads]

LevisPromoRenderer

PrebidUserIdentityHoldoutV2[default,ads]

PrebidUseBidCache[default,ads]

Prebid8[default,ads]

ZuoraLocalCurrency[default,subscriptions]

AdsAsyncAbTrackingV2[default,ads]

SpellModeOnRenderer

TextbookSearchQueryV3[default,search]

SignupFrontDoorModal[default,growth]

ClassCourseQueryLengthRestriction[default,search]

ExCoOnSetPageNoOverlap[default,ads]

NotesUploadPageRedesignV2[default,ads]

EthocaWebhook[default,subscriptions]

TypeaheadVectorSuggestionV5[default,search,ads]

SetPageRecommendedSetsPlacement[default,subscriptions,ads]

SetPageMWebModesPlacementV2[default,subscriptions,ads]

DisableSendSoonerForAdSlotEventsV2[default,ads]

ProfileClassesOnRenderer

ProfileExplanationsOnRenderer

ProfileCoursesOnRenderer

ProfileFoldersShowOnRenderer

ProfileNotesOnRenderer

ClassPageOnRenderer

ProfileAdminOnRenderer

VerifiedGroupOrder[default,subscriptions]

GoogleFedCM[default,growth,ads]

WelcomeBackModalStaticImages

LOTestMode

EmailVerificationEnrollmentV2

ExCoOnSetPageV4[default,ads]

ExCoNoSidebars[default,ads]

LoginPageOnRendererV2

SignupPageOnRenderer

CampusPollsSchoolPredictionFeatureFlag

RemoveSetPageAdsInPH[default,ads]

ExCoOnExplanations[default,ads]

WelcomeBackModalGifFallback

LearnModeOnRendererV2[default,ads]

IFrameNPlus1LoadingStrategy

EnableSetPageAdsInFRAndTR

WelcomeBackBTS2023HurricaneBannerFeatureFlag

MagicNotesHurricaneBannerFeatureFlag

DisableA9Safari[default,ads]

LiveRenderer

CampusPollsNonTargeted[default,growth,engagement,ads]

SetPageShareOptionsFalseDoorAA[default,growth,ads]

SoftenedSignupUpsell[default,subscriptions]

OptimizeStudeyModeSignupExitPromptV2[default,growth,ads]

UseJSONForAdSizesV3[default,ads]

AdLightningPerfTest[default,ads]

AdLightningVersion[default,ads]

SendUSPDataToApsV4[default,ads]

PrismicRenderer

ExamPageReadBuckets

SetPageShowGamesHub

PhraseMatchingV4[default,search,ads]

LoggedOutHomepageRenderer[default,growth]

ExpertSolutionsRatingsOnSearchV2

StudentCompetitionPhase2

TermImageSearchChange[default,search]

SearchPageRendererV2[default,search,ads]

TermSearchRedesignV2[default,search,ads]

DisableFacebookSignup

FallbackFacebookToMagicLinkLogin

UseRecentSameSubjectSetRecommendations[default,ads]

PrebidDynamicBiddingHoldout[default,ads]

FlashcardStudyBreakAd[default,ads]

MLPriceFlooringHoldout[default,ads]

AmazonPublisherAudienceV3[default,ads]

StudyModeAdsDurationV2[default,ads]

TextbookMetRobotsNoindexV2

GroupCheckoutRenderer[default,subscriptions]

UpgradeSuccessRendererV2[default,subscriptions]

GroupOrderEnhancedHelp[default,subscriptions]

GroupOrderAllCurrencies[default,subscriptions]

GroupUpgradeRenderer[default,subscriptions]

LOHNewMarketingPageFRFR

LOHNewMarketingPageDE

GroupOrdersManagerClientBatching

SignupAssemblification2023[default,growth]

ZuoraOutageFallback[default,subscriptions]

CreditActivationRenderer[default,subscriptions]

TeacherReferralsLanding[default,growth]

adsHoldOut_20180315

SurveyFakeDoor[default,growth]

TermToQAV2A[default,ads,subscriptions,growth,engagement]

WalkthroughVideos[default,growth,subscriptions,ads]

ExpertEmphasis[default,subscriptions,growth,ads]

UpgradeRenderer[default,subscriptions]

ImproveMwebStickyAdPerf[default,ads]

PopCultureSetMashups[default,engagement,growth,ads]

GoogleOauthDropoffHelpV2[default,engagement,growth,ads]

UsernameRemovalFromFlows[default,engagement,growth]

GroupOrdersManagerLaunch

ProfilePageOnRenderer

CreateSetPageOnRendererV2

ConfirmEmailFlowOnRenderer

SettingsPageOnRenderer

GroupOrderManagerUsersOnLegacyOrders

Renderer/index

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Week 3 types of pacemakers