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  <xs:element id="abt_A2020FiveYearCreditAgreementMember" abstract="true" name="A2020FiveYearCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_CardiovascularSystemsIncMember" abstract="true" name="CardiovascularSystemsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_AccruedRebatesPayableToGovernmentAgencies" abstract="false" name="AccruedRebatesPayableToGovernmentAgencies" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_A0375NotesDue2027Member" abstract="true" name="A0375NotesDue2027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_ReconciliationOfDepreciationAdditionsToPropertyPlantAndEquipmentFromSegmentToConsolidatedAndAssetsBySegmentTableTextBlock" abstract="false" name="ReconciliationOfDepreciationAdditionsToPropertyPlantAndEquipmentFromSegmentToConsolidatedAndAssetsBySegmentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="abt_InventoryNoNetRealizableValueSold" abstract="false" name="InventoryNoNetRealizableValueSold" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_IncomeTaxDisclosureLineItems" abstract="true" name="IncomeTaxDisclosureLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="abt_EffectOfCommonAndTreasuryShareTransactions" abstract="false" name="EffectOfCommonAndTreasuryShareTransactions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="abt_EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeTaxExpenseBenefit" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abt_PostEmploymentObligationsAndOtherLongTermLiabilitiesTable" abstract="true" name="PostEmploymentObligationsAndOtherLongTermLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="abt_LossContingencyRangeOfPossibleLossMaximumIndividualSite" abstract="false" name="LossContingencyRangeOfPossibleLossMaximumIndividualSite" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_OtherExitCostsMember" abstract="true" name="OtherExitCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_MaximumFundAmountWithThresholdRedemptionLimit" abstract="false" name="MaximumFundAmountWithThresholdRedemptionLimit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="abt_RestrictedStockAwardsMember" abstract="true" name="RestrictedStockAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_A150NotesDue2026Member" abstract="true" name="A150NotesDue2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_AdultNutritionalsMember" abstract="true" name="AdultNutritionalsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_OtherAccruedLiabilitiesCurrentMember" abstract="true" name="OtherAccruedLiabilitiesCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_A000NotesDue2020Member" abstract="true" name="A000NotesDue2020Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_LegalProceedingsAndEnvironmentalExposuresMember" abstract="true" name="LegalProceedingsAndEnvironmentalExposuresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_RevenueRemainingPerformanceObligationExpectedTimingPercentage" abstract="false" name="RevenueRemainingPerformanceObligationExpectedTimingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="abt_TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseLiability" abstract="false" name="TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="abt_PostEmploymentObligationsDeferredIncomeTaxesAndOtherLongTermLiabilitiesMember" abstract="true" name="PostEmploymentObligationsDeferredIncomeTaxesAndOtherLongTermLiabilitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_DefinedBenefitPlanInvestmentFundsUSLargeCapMember" abstract="true" name="DefinedBenefitPlanInvestmentFundsUSLargeCapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="abt_PeriodCashDiscountsBecomeKnown" abstract="false" name="PeriodCashDiscountsBecomeKnown" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="abt_OtherComprehensiveIncomeLossFairValueHedgeGainLossReclassificationBeforeTax" abstract="false" name="OtherComprehensiveIncomeLossFairValueHedgeGainLossReclassificationBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
