2019
Acute Kidney Injury Among Older Patients Undergoing Coronary Angiography for Acute Myocardial Infarction: The SILVER-AMI Study
Dodson JA, Hajduk A, Curtis J, Geda M, Krumholz HM, Song X, Tsang S, Blaum C, Miller P, Parikh CR, Chaudhry SI. Acute Kidney Injury Among Older Patients Undergoing Coronary Angiography for Acute Myocardial Infarction: The SILVER-AMI Study. The American Journal Of Medicine 2019, 132: e817-e826. PMID: 31170374, PMCID: PMC6891160, DOI: 10.1016/j.amjmed.2019.05.022.Peer-Reviewed Original ResearchMeSH KeywordsActivities of Daily LivingAcute Kidney InjuryAge FactorsAgedAged, 80 and overCohort StudiesCoronary AngiographyDatabases, FactualFemaleGeriatric AssessmentHospital MortalityHospitalizationHumansKaplan-Meier EstimateLogistic ModelsMaleMyocardial InfarctionOdds RatioPrognosisProportional Hazards ModelsRisk AssessmentSeverity of Illness IndexSurvival AnalysisConceptsAcute kidney injuryAcute myocardial infarctionAge-related conditionsKidney injuryBody mass indexCoronary angiographyRisk factorsMyocardial infarctionOlder patientsMean ageAcute kidney injury risk factorsAcute Myocardial Infarction StudyAcute myocardial infarction cohortOlder adultsGlobal Outcomes criteriaMyocardial Infarction StudyInjury risk factorsParticipants' mean ageSILVER-AMI StudyMultivariable adjustmentComorbid diseasesHeart failureIndependent predictorsGeriatric conditionsMass index
2018
Racial Disparities in Patient Characteristics and Survival After Acute Myocardial Infarction
Graham GN, Jones PG, Chan PS, Arnold SV, Krumholz HM, Spertus JA. Racial Disparities in Patient Characteristics and Survival After Acute Myocardial Infarction. JAMA Network Open 2018, 1: e184240. PMID: 30646346, PMCID: PMC6324589, DOI: 10.1001/jamanetworkopen.2018.4240.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionWhite patientsBlack patientsMortality rate differencesMortality ratePatient characteristicsMyocardial infarctionPropensity scoreAcute Myocardial Infarction Patients' Health Status (TRIUMPH) registrySelf-identified black patientsObserved survival differencesNational Death IndexTime of admissionLower propensity scoreProspective registryClinical characteristicsCohort studyDeath IndexHighest quintileBlack raceC-statisticSurvival differencesWorse outcomesMAIN OUTCOMEPatients
2016
Life Expectancy after Myocardial Infarction, According to Hospital Performance
Bucholz EM, Butala NM, Ma S, Normand ST, Krumholz HM. Life Expectancy after Myocardial Infarction, According to Hospital Performance. New England Journal Of Medicine 2016, 375: 1332-1342. PMID: 27705249, PMCID: PMC5118048, DOI: 10.1056/nejmoa1513223.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionRisk-standardized mortality ratesMyocardial infarctionLife expectancyMortality rateHospital performanceCooperative Cardiovascular ProjectProportional hazards modelLong-term survivalCase-mix severityLonger life expectancySurvival benefitInfarctionMedicare beneficiariesPatientsHospital case mixCase mixHospitalSurvival curvesQuintileStudy sampleSignificant differencesEarly survivalExpectancySurvival
2014
Trends in Early Aspirin Use Among Patients With Acute Myocardial Infarction in China, 2001–2011: The China PEACE‐Retrospective AMI Study
Gao Y, Masoudi FA, Hu S, Li J, Zhang H, Li X, Desai NR, Krumholz HM, Jiang L, Group T. Trends in Early Aspirin Use Among Patients With Acute Myocardial Infarction in China, 2001–2011: The China PEACE‐Retrospective AMI Study. Journal Of The American Heart Association 2014, 3: e001250. PMID: 25304853, PMCID: PMC4323779, DOI: 10.1161/jaha.114.001250.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsAgedAspirinChinaCohort StudiesConfidence IntervalsDose-Response Relationship, DrugDrug Administration ScheduleFemaleHospital MortalityHumansMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionOdds RatioRetrospective StudiesRisk AssessmentRural PopulationSecondary PreventionSex FactorsSurvival AnalysisSurvival RateUrban PopulationConceptsAcute myocardial infarctionMyocardial infarctionAspirin useEarly treatmentSegment elevation acute myocardial infarctionElevation acute myocardial infarctionEarly useChina PEACE-Retrospective AMI StudyEarly aspirin therapyEarly aspirin useLimited healthcare resourcesAspirin therapyCardiogenic shockChest discomfortReperfusion therapyRate of useChina PatientRetrospective studyPatient groupFinal diagnosisHealthcare resourcesInfarctionPatientsAspirinAMI studyUsual Source of Care and Outcomes Following Acute Myocardial Infarction
Spatz ES, Sheth SD, Gosch KL, Desai MM, Spertus JA, Krumholz HM, Ross JS. Usual Source of Care and Outcomes Following Acute Myocardial Infarction. Journal Of General Internal Medicine 2014, 29: 862-869. PMID: 24553957, PMCID: PMC4026492, DOI: 10.1007/s11606-014-2794-0.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionUsual sourceMyocardial infarctionMortality rateBaseline risk factorsAcute clinical eventsMain outcome measuresAMI severityAMI patientsMultivariable analysisKey ResultsAmongClinical eventsSocio-demographic characteristicsRisk factorsOutcome measuresReadmissionHigh mortalityPatientsMortalityCareMonthsInfarctionAdultsOutcomesAssociation
2013
Association Between a Hospital’s Quality Performance for In-Hospital Cardiac Arrest and Common Medical Conditions
Chen LM, Nallamothu BK, Krumholz HM, Spertus JA, Tang F, Chan PS. Association Between a Hospital’s Quality Performance for In-Hospital Cardiac Arrest and Common Medical Conditions. Circulation Cardiovascular Quality And Outcomes 2013, 6: 700-707. PMID: 24221831, PMCID: PMC4465597, DOI: 10.1161/circoutcomes.113.000377.Peer-Reviewed Original ResearchConceptsCommon medical conditionsHospital survival rateAcute myocardial infarctionCardiac arrestMedical conditionsSurvival rateInpatient survivalHeart failureMyocardial infarctionMortality rateHospital cardiac arrest registryHospital qualityIn-Hospital Cardiac ArrestRisk-standardized mortality ratesCardiac Arrest RegistryCardiac arrest outcomesCardiac arrest patientsHospital cardiac arrestCardiac arrest survival ratesPublic reportingHospital outcomesArrest patientsHospital CompareArrest outcomesHospitalDominance of Furosemide for Loop Diuretic Therapy in Heart Failure Time to Revisit the Alternatives?
Bikdeli B, Strait KM, Dharmarajan K, Partovian C, Coca SG, Kim N, Li SX, Testani JM, Khan U, Krumholz HM. Dominance of Furosemide for Loop Diuretic Therapy in Heart Failure Time to Revisit the Alternatives? Journal Of The American College Of Cardiology 2013, 61: 1549-1550. PMID: 23500272, PMCID: PMC4038646, DOI: 10.1016/j.jacc.2012.12.043.Peer-Reviewed Original Research
2012
Trends in Survival after In-Hospital Cardiac Arrest
Girotra S, Nallamothu BK, Spertus JA, Li Y, Krumholz HM, Chan PS. Trends in Survival after In-Hospital Cardiac Arrest. New England Journal Of Medicine 2012, 367: 1912-1920. PMID: 23150959, PMCID: PMC3517894, DOI: 10.1056/nejmoa1109148.Peer-Reviewed Original ResearchConceptsHospital cardiac arrestPulseless electrical activityCardiac arrestRisk-adjusted ratesNeurologic disabilityIn-Hospital Cardiac ArrestAcute resuscitation survivalGuidelines-Resuscitation registrySignificant neurologic disabilityQuality improvement registryPulseless ventricular tachycardiaElectrical activityInitial rhythmNeurologic outcomePostresuscitation careAcute resuscitationNeurologic functionSurvival improvementPostresuscitation survivalResuscitation careVentricular tachycardiaRhythm groupVentricular fibrillationMultivariable regressionSurvivalBody Mass Index and Mortality in Acute Myocardial Infarction Patients
Bucholz EM, Rathore SS, Reid KJ, Jones PG, Chan PS, Rich MW, Spertus JA, Krumholz HM. Body Mass Index and Mortality in Acute Myocardial Infarction Patients. The American Journal Of Medicine 2012, 125: 796-803. PMID: 22483510, PMCID: PMC3408565, DOI: 10.1016/j.amjmed.2012.01.018.Peer-Reviewed Original ResearchConceptsBody mass indexHigher body mass indexAcute myocardial infarctionMyocardial infarctionLower mortalityObesity paradoxMass indexAssociation of BMIMedian body mass indexCox proportional hazards regressionAcute myocardial infarction patientsImpact of obesityRegistry of patientsProportional hazards regressionMyocardial infarction patientsContinuous variablesDomains of patientsDiabetes subgroupsClinical characteristicsMultivariable adjustmentHeart failurePatient characteristicsBMI groupsDiabetes mellitusHazards regression
2010
Automated External Defibrillators and Survival After In-Hospital Cardiac Arrest
Chan PS, Krumholz HM, Spertus JA, Jones PG, Cram P, Berg RA, Peberdy MA, Nadkarni V, Mancini ME, Nallamothu BK, Investigators F. Automated External Defibrillators and Survival After In-Hospital Cardiac Arrest. JAMA 2010, 304: 2129-2136. PMID: 21078809, PMCID: PMC3587791, DOI: 10.1001/jama.2010.1576.Peer-Reviewed Original ResearchConceptsHospital cardiac arrestCardiac arrestAED useHospital dischargeHospitalized patientsShockable rhythmNonshockable rhythmsIn-Hospital Cardiac ArrestMultivariable hierarchical regressionGeneral hospital wardsEntire study populationExternal defibrillatorsPropensity score analysisUse of AEDsCohort studyImproved survivalPatient factorsStudy populationMAIN OUTCOMEPatientsHospital wardsUS hospitalsHospital sitesHospital unitsAEDsVariation in Recovery
Lichtman JH, Lorenze NP, D'Onofrio G, Spertus JA, Lindau ST, Morgan TM, Herrin J, Bueno H, Mattera JA, Ridker PM, Krumholz HM. Variation in Recovery. Circulation Cardiovascular Quality And Outcomes 2010, 3: 684-693. PMID: 21081748, PMCID: PMC3064946, DOI: 10.1161/circoutcomes.109.928713.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionYoung AMI patientsAMI patientsYoung womenHeart diseaseSex differencesExcess mortality riskIschemic heart diseaseRisk stratification modelPsychosocial risk factorsYears of ageQuality of careComparison cohortPrognostic factorsPrognostic importanceAMI populationMyocardial infarctionRisk factorsObservational studyMortality riskHigh riskAMI eventsPatientsAge accountWomenVariation in Hospital Mortality Rates for Patients With Acute Myocardial Infarction
Bradley EH, Herrin J, Curry L, Cherlin EJ, Wang Y, Webster TR, Drye EE, Normand SL, Krumholz HM. Variation in Hospital Mortality Rates for Patients With Acute Myocardial Infarction. The American Journal Of Cardiology 2010, 106: 1108-1112. PMID: 20920648, DOI: 10.1016/j.amjcard.2010.06.014.Peer-Reviewed Original ResearchMeSH KeywordsHospital MortalityHospitalsHumansMyocardial InfarctionRetrospective StudiesSurvival AnalysisUnited StatesConceptsAcute myocardial infarctionHospital characteristicsMyocardial infarctionMortality rateCross-sectional national studyHospital mortality rateHospital patient populationAmerican Hospital Association surveyAMI dischargeMean hospitalHospital outcomesCardiac facilitiesPatient populationAMI volumeMultivariable modelPatient profilesMedicare beneficiariesHospitalHospital bedsPatientsTeaching statusUnited States Census dataStates Census dataInfarctionStatus profileDiscontinuation of Antihyperglycemic Therapy and Clinical Outcomes After Acute Myocardial Infarction in Older Patients With Diabetes
Lipska KJ, Wang Y, Kosiborod M, Masoudi FA, Havranek EP, Krumholz HM, Inzucchi SE. Discontinuation of Antihyperglycemic Therapy and Clinical Outcomes After Acute Myocardial Infarction in Older Patients With Diabetes. Circulation Cardiovascular Quality And Outcomes 2010, 3: 236-242. PMID: 20354220, DOI: 10.1161/circoutcomes.109.887620.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionAntihyperglycemic therapyAntihyperglycemic agentsOlder patientsMyocardial infarctionMortality rateMultivariable Cox proportional hazards modelsCox proportional hazards modelFrequency of discontinuationGlucose-lowering agentsGlucose-lowering therapyInclusion/exclusion criteriaProportional hazards modelYear of dischargeHigh mortality rateDiabetic regimenFirst rehospitalizationReadmission ratesSecondary outcomesHeart failurePrimary outcomeClinical outcomesMultivariable analysisRetrospective studyIndependent associationDifferences in Patient Survival After Acute Myocardial Infarction by Hospital Capability of Performing Percutaneous Coronary Intervention: Implications for Regionalization
Chen J, Krumholz HM, Wang Y, Curtis JP, Rathore SS, Ross JS, Normand SL, Schreiner GC, Mulvey G, Nallamothu BK. Differences in Patient Survival After Acute Myocardial Infarction by Hospital Capability of Performing Percutaneous Coronary Intervention: Implications for Regionalization. JAMA Internal Medicine 2010, 170: 433-439. PMID: 20212179, PMCID: PMC2900156, DOI: 10.1001/archinternmed.2009.538.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesNon-PCI hospitalsPercutaneous coronary interventionAcute myocardial infarctionHospital referral regionsPCI hospitalsHealth care regionCoronary interventionAMI patientsMyocardial infarctionCare regionLower risk-standardized mortality ratesSame hospital referral regionService beneficiaries 65 yearsBeneficiaries 65 yearsMagnitude of benefitPatient survivalAMI careReferral regionsOutcome differencesMedicare feeMortality rateHospitalHospital capabilitiesInfarction
2008
Statistical Models and Patient Predictors of Readmission for Heart Failure: A Systematic Review
Ross JS, Mulvey GK, Stauffer B, Patlolla V, Bernheim SM, Keenan PS, Krumholz HM. Statistical Models and Patient Predictors of Readmission for Heart Failure: A Systematic Review. JAMA Internal Medicine 2008, 168: 1371-1386. PMID: 18625917, DOI: 10.1001/archinte.168.13.1371.Peer-Reviewed Original ResearchMeSH KeywordsDisease ProgressionEvidence-Based MedicineFemaleHeart FailureHospitalizationHumansIncidenceMaleModels, StatisticalPatient ReadmissionPredictive Value of TestsProportional Hazards ModelsQuality-Adjusted Life YearsRisk FactorsSensitivity and SpecificitySeverity of Illness IndexSurvival AnalysisUnited StatesConceptsPatient characteristicsPatient readmission riskReadmission riskPatient riskSystematic reviewReadmission ratesHospital ratesOvid Evidence-Based Medicine ReviewsEligible English-language publicationsEvidence-Based Medicine ReviewsHeart failure hospitalizationPatient risk stratificationEnglish-language literatureEnglish-language publicationsFailure hospitalizationHF hospitalizationAdult patientsHeart failureHospital readmissionMedicine ReviewsRisk stratificationPatient predictorsInclusion criteriaReadmissionCombined outcomeInvestigation of 89 candidate gene variants for effects on all-cause mortality following acute coronary syndrome
Morgan TM, Xiao L, Lyons P, Kassebaum B, Krumholz HM, Spertus JA. Investigation of 89 candidate gene variants for effects on all-cause mortality following acute coronary syndrome. BMC Medical Genomics 2008, 9: 66. PMID: 18620593, PMCID: PMC2483267, DOI: 10.1186/1471-2350-9-66.Peer-Reviewed Original ResearchConceptsAcute coronary syndromeRisk factorsACS mortalityCoronary syndromeTraditional cardiac risk factorsKaplan-Meier survival analysisMultivariate risk prediction modelCardiac risk factorsPutative genetic risk factorsGene variantsUniversity-affiliated hospitalBorderline statistical significanceGenetic risk factorsSystematic literature searchRisk prediction modelGenetic variantsCandidate gene variantsACS survivorsCause mortalityACS casesCox regressionPatient cohortClinical prognosisPotential confoundingSurvival analysisLong-term Prognosis of Acute Kidney Injury After Acute Myocardial Infarction
Parikh CR, Coca SG, Wang Y, Masoudi FA, Krumholz HM. Long-term Prognosis of Acute Kidney Injury After Acute Myocardial Infarction. JAMA Internal Medicine 2008, 168: 987-995. PMID: 18474763, DOI: 10.1001/archinte.168.9.987.Peer-Reviewed Original ResearchMeSH KeywordsAcute Kidney InjuryAgedCreatinineFemaleHumansMaleMyocardial InfarctionPrognosisSeverity of Illness IndexSurvival AnalysisUnited StatesConceptsSevere acute kidney injuryAcute kidney injuryAcute myocardial infarctionMild acute kidney injuryModerate acute kidney injuryKidney injuryLong-term riskMyocardial infarctionSeverity of AKIAdjusted hazard ratioLong-term mortalitySerum creatinine levelsLong-term prognosisCooperative Cardiovascular ProjectElderly Medicare patientsHigh-risk groupAssociation of severityHospital mortalityHospital survivorsCause mortalityCardiovascular mortalityCreatinine levelsHazard ratioInpatient mortalityCommon complicationDelay in Presentation and Reperfusion Therapy in ST-Elevation Myocardial Infarction
Ting HH, Bradley EH, Wang Y, Nallamothu BK, Gersh BJ, Roger VL, Lichtman JH, Curtis JP, Krumholz HM. Delay in Presentation and Reperfusion Therapy in ST-Elevation Myocardial Infarction. The American Journal Of Medicine 2008, 121: 316-323. PMID: 18374691, PMCID: PMC2373574, DOI: 10.1016/j.amjmed.2007.11.017.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngioplasty, Balloon, CoronaryEarly DiagnosisElectrocardiographyEmergency Medical ServicesEmergency Service, HospitalFemaleFollow-Up StudiesHospital MortalityHumansMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionMyocardial RevascularizationOdds RatioProbabilityRegistriesRetrospective StudiesRisk FactorsSurvival AnalysisThrombolytic TherapyTime FactorsTreatment OutcomeConceptsST-elevation myocardial infarctionReperfusion therapyHospital presentationBalloon timeSymptom onsetLonger doorMyocardial infarctionDrug timePrimary reperfusion therapyCohort studyLate presentersNeedle timeNational registryPatientsReduced likelihoodTherapyInfarctionLong delayPresentationOnsetHoursAssociationMinutesRegistryThe Relationship Between Anemia, Change in Hematocrit Over Time and Change in Health Status in Patients With Heart Failure After Myocardial Infarction
Kosiborod M, Krumholz HM, Jones PG, Pitt B, Spertus JA. The Relationship Between Anemia, Change in Hematocrit Over Time and Change in Health Status in Patients With Heart Failure After Myocardial Infarction. Journal Of Cardiac Failure 2008, 14: 27-34. PMID: 18226770, DOI: 10.1016/j.cardfail.2007.09.009.Peer-Reviewed Original ResearchMeSH KeywordsAgedAnemiaCohort StudiesFemaleHealth Status IndicatorsHeart FailureHeart Function TestsHematocritHumansLinear ModelsMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionProbabilityPrognosisQuality of LifeRisk AssessmentSickness Impact ProfileSurveys and QuestionnairesSurvival AnalysisTime FactorsConceptsKansas City Cardiomyopathy QuestionnaireHeart failureHealth status gainsHealth statusBaseline hematocritInitial hematocritMyocardial infarctionPatient’s initial hematocritPotential therapeutic targetHealth status assessmentMultivariable adjustmentAnemic patientsSevere anemiaSerial hematocritsHematocrit levelsPatientsTherapeutic targetHematocrit changesHematocritAnemiaInfarctionLinear regression modelsMonthsRegression modelsSignificant changesDelayed Time to Defibrillation after In-Hospital Cardiac Arrest
S. C, M. K, Graham N, K. N, Investigators T. Delayed Time to Defibrillation after In-Hospital Cardiac Arrest. New England Journal Of Medicine 2008, 358: 9-17. PMID: 18172170, DOI: 10.1056/nejmoa0706467.Peer-Reviewed Original ResearchMeSH KeywordsAgedComorbidityElectric CountershockFemaleHeart ArrestHeart FailureHospital Bed CapacityHospital MortalityHospitalizationHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionRetrospective StudiesSurvival AnalysisTachycardia, VentricularTime FactorsVentricular FibrillationConceptsHospital cardiac arrestCardiac arrestHospital dischargeIn-Hospital Cardiac ArrestOverall median timePulseless ventricular tachycardiaMultivariable logistic regressionLower ratesMedian timeVentricular arrhythmiasBlack raceHospital characteristicsNational registryVentricular tachycardiaCardiopulmonary resuscitationExpert guidelinesVentricular fibrillationHospital unitsLogistic regressionPatientsDefibrillationSurvivalArrestHospitalMinutes of delay