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  <xs:element id="abt_DefinedBenefitPlanInvestmentFundsUSMidCapAndSmallCapMember" abstract="true" name="DefinedBenefitPlanInvestmentFundsUSMidCapAndSmallCapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_DefinedBenefitPlanInvestmentFundsNonUSMember" abstract="true" name="DefinedBenefitPlanInvestmentFundsNonUSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_OtherPrimarilyInvestmentsInPrivateFundsMember" abstract="true" name="OtherPrimarilyInvestmentsInPrivateFundsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_ExcessTaxExpenseBenefitFromShareBasedCompensation" abstract="false" name="ExcessTaxExpenseBenefitFromShareBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_TaxesOnEarningsDeferredTaxAssetNonCashTaxBenefitOnPriorYearIncomeTaxesAmount" abstract="false" name="TaxesOnEarningsDeferredTaxAssetNonCashTaxBenefitOnPriorYearIncomeTaxesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_TaxesOnEarningsNonCashValuationAllowanceAdjustmentsRestructuring" abstract="false" name="TaxesOnEarningsNonCashValuationAllowanceAdjustmentsRestructuring" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseLiability" abstract="false" name="TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_IRSStatutoryNoticeOfDeficiencyClaimAmount" abstract="false" name="IRSStatutoryNoticeOfDeficiencyClaimAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_IRSStatutoryNoticeOfDeficiencyContestedCashTaxBenefitAmount" abstract="false" name="IRSStatutoryNoticeOfDeficiencyContestedCashTaxBenefitAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_TaxAssessmentReceivedRelatedToTaxationOfIntercompanyTransferOfAffiliate" abstract="false" name="TaxAssessmentReceivedRelatedToTaxationOfIntercompanyTransferOfAffiliate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_EffectiveIncomeTaxRateReconciliationAffiliateFinancingAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationAffiliateFinancingAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_EffectiveIncomeTaxRateReconciliationAffiliateInvestingAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationAffiliateInvestingAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_EffectiveIncomeTaxRateReconciliationAffiliateFinancingPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationAffiliateFinancingPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abt_EffectiveIncomeTaxRateReconciliationAffiliateInvestingPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationAffiliateInvestingPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abt_EffectiveIncomeTaxReconciliationIntercompanyRestructuringsAndIntegrationPercent" abstract="false" name="EffectiveIncomeTaxReconciliationIntercompanyRestructuringsAndIntegrationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abt_DeferredTaxAssetsLeaseLiabilities" abstract="false" name="DeferredTaxAssetsLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_DeferredTaxAssetsIntercompanyProfit" abstract="false" name="DeferredTaxAssetsIntercompanyProfit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_DeferredTaxLiabilitiesCompensationAndBenefits" abstract="false" name="DeferredTaxLiabilitiesCompensationAndBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_DeferredTaxLiabilitiesRightOfUseLeaseAssets" abstract="false" name="DeferredTaxLiabilitiesRightOfUseLeaseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_CorporateAndBenefitPlanCosts" abstract="false" name="CorporateAndBenefitPlanCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_OtherCostAndExpenseOperatingAndNonoperating" abstract="false" name="OtherCostAndExpenseOperatingAndNonoperating" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" abstract="false" name="ImpairmentOfIntangibleAssetIndefiniteLivedExcludingGoodwillStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abt_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" abstract="false" name="RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abt_TotalSegmentReportingReconcilingItemsAllOtherAssets" abstract="false" name="TotalSegmentReportingReconcilingItemsAllOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_AllOtherCountriesMember" abstract="true" name="AllOtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
