2019
P415330-Day readmission after hospitalization for heart failure in china
Li J, Bai X, Zhang L, Masoudi F, Spertus J, Krumholz H. P415330-Day readmission after hospitalization for heart failure in china. European Heart Journal 2019, 40: ehz745.0725. DOI: 10.1093/eurheartj/ehz745.0725.Peer-Reviewed Original ResearchDays of dischargeHeart failurePatient characteristicsMedian odds ratioOdds ratioChronic obstructive pulmonary diseaseIndex hospital stayObstructive pulmonary diseaseWeeks of dischargeValvular heart diseaseTransitions of careHF hospitalizationRandom hospitalsCause readmissionEligible patientsHospital stayHospitalization stayReadmission diagnosesReadmission ratesConsecutive patientsHospital readmissionMedian agePulmonary diseasePatient factorsC-statisticThirty-Day Hospital Readmission After Acute Myocardial Infarction in China
Li J, Dharmarajan K, Bai X, Masoudi FA, Spertus JA, Li X, Zheng X, Zhang H, Yan X, Dreyer RP, Krumholz HM, Group F. Thirty-Day Hospital Readmission After Acute Myocardial Infarction in China. Circulation Cardiovascular Quality And Outcomes 2019, 12: e005628. PMID: 31092023, DOI: 10.1161/circoutcomes.119.005628.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionUnplanned cardiovascular readmissionsDays of dischargeMyocardial infarctionCardiovascular readmissionCause readmissionMost readmissionsLower riskFit Cox proportional hazards modelsST-segment elevation myocardial infarctionAcute Coronary Events (GRACE) scoreThirty-day hospital readmissionsDisease-specific health statusCox proportional hazards modelVentricular ejection fractionProportional hazards modelLow social supportBackground ReadmissionRecurrent anginaCardiovascular eventsHospital complicationsUnplanned readmissionIndex hospitalizationClinical factorsConsecutive patientsEducation level and outcomes after acute myocardial infarction in China
Huo X, Khera R, Zhang L, Herrin J, Bai X, Wang Q, Lu Y, Nasir K, Hu S, Li J, Li X, Zheng X, Masoudi FA, Spertus JA, Krumholz HM, Jiang L. Education level and outcomes after acute myocardial infarction in China. Heart 2019, 105: 946. PMID: 30661037, PMCID: PMC6582708, DOI: 10.1136/heartjnl-2018-313752.Peer-Reviewed Original ResearchConceptsMajor adverse cardiovascular eventsLow educational attainmentAcute myocardial infarction (AMI) outcomesAdverse cardiovascular eventsFuture healthcare interventionsMyocardial infarction outcomesCardiovascular risk factorsRisk-adjusted analysisAcute myocardial infarctionMedian participant ageCardiovascular eventsCause mortalityAdverse eventsConsecutive patientsAMI outcomesChina PatientUnadjusted analysesMyocardial infarctionRisk factorsChinese cohortHigh riskEducational attainmentEducational attainment groupsHealthcare interventionsPatients
2016
The china patient‐centered evaluative assessment of cardiac events (PEACE) prospective study of percutaneous coronary intervention: Study design
Du X, Pi Y, Dreyer RP, Li J, Li X, Downing NS, Li L, Feng F, Zhan L, Zhang H, Guan W, Xu X, Li S, Lin Z, Masoudi FA, Spertus JA, Krumholz HM, Jiang L, Group F. The china patient‐centered evaluative assessment of cardiac events (PEACE) prospective study of percutaneous coronary intervention: Study design. Catheterization And Cardiovascular Interventions 2016, 88: e212-e221. PMID: 26945565, PMCID: PMC5215582, DOI: 10.1002/ccd.26461.Peer-Reviewed Original ResearchMeSH KeywordsChinaClinical ProtocolsCoronary AngiographyHealth StatusHealthcare DisparitiesHumansMedication AdherenceMyocardial InfarctionPatient Reported Outcome MeasuresPatient-Centered CarePercutaneous Coronary InterventionPredictive Value of TestsProspective StudiesResearch DesignRisk AssessmentRisk FactorsSecondary PreventionTime FactorsTreatment OutcomeConceptsPercutaneous coronary interventionPatient-reported outcomesCardiovascular risk factor controlRisk factor controlProspective studyHealth statusMedical historyLong-term clinical outcomesLong-term patient outcomesHospital-level factorsIndependent core laboratoryNationwide prospective studyLong-term outcomesPatient's medical historyHospital outcomesCoronary interventionPatient demographicsSecondary preventionConsecutive patientsMedical chartsPCI indicationPrimary outcomeClinical outcomesClinical presentationHealthcare utilization
2012
Building Hospital Management Capacity to Improve Patient Flow for Cardiac Catheterization at a Cardiovascular Hospital in Egypt
Wong R, Hathi S, Linnander EL, Banna A, Maraghi M, Din R, Ahmed A, Hafez AR, Allam AA, Krumholz HM, Bradley EH. Building Hospital Management Capacity to Improve Patient Flow for Cardiac Catheterization at a Cardiovascular Hospital in Egypt. The Joint Commission Journal On Quality And Patient Safety 2012, 38: 147-153. PMID: 22533126, PMCID: PMC3427659, DOI: 10.1016/s1553-7250(12)38019-7.Peer-Reviewed Original ResearchConceptsCardiac catheterizationPre-post intervention studyPercentage of patientsPatient flowPre-intervention periodNational Heart InstituteCatheterization laboratory proceduresResource-limited settingsSubset of proceduresTotal patientsConsecutive patientsMiddle-income countriesCardiovascular HospitalPostintervention periodHeart InstituteHospital careHigh-income countriesQI interventionsPatientsCatheterization proceduresIntervention studiesCatheterizationPatient crowdingWard unitSignificant reductionCoronary Artery Bypass Graft
Hu S, Zheng Z, Yuan X, Wang Y, Normand SL, Ross JS, Krumholz HM. Coronary Artery Bypass Graft. Circulation Cardiovascular Quality And Outcomes 2012, 5: 214-221. PMID: 22396587, PMCID: PMC3509783, DOI: 10.1161/circoutcomes.111.962365.Peer-Reviewed Original ResearchConceptsChinese Cardiac Surgery RegistryCardiac Surgery RegistryCABG surgeryComplication rateCoronary artery bypass graftCoronary artery bypassMajor complication rateArtery bypass graftCause mortality ratesNational multicenter databaseHospital-level performanceArtery bypassHospital mortalityMediastinal infectionRenal failureConsecutive patientsBypass graftMulticenter databaseMean ageMyocardial infarctionNational registryCABG facilitiesMortality rateSurgeryHospital
2007
Ischaemic symptoms, quality of care and mortality during myocardial infarction
Schelbert EB, Rumsfeld JS, Krumholz HM, Canto JG, Magid DJ, Masoudi FA, Reid KJ, Spertus JA. Ischaemic symptoms, quality of care and mortality during myocardial infarction. Heart 2007, 94: e2. PMID: 17639097, PMCID: PMC3703470, DOI: 10.1136/hrt.2006.111674.Peer-Reviewed Original ResearchConceptsIschemic symptomsMyocardial infarctionQuality of careST-elevation myocardial infarctionACE/ARBNon-cardiac comorbiditiesPositive cardiac enzymesEvidence of infarctionHospital mortalityCessation counsellingHospital survivalReperfusion therapyCardiac enzymesConsecutive patientsMI careMI symptomsCare indicatorsPatient reportsSymptom recognitionChart documentationPatientsUS hospitalsSymptomsInfarctionCareChanges in outcomes for internal medicine inpatients after work-hour regulations.
Horwitz LI, Kosiborod M, Lin Z, Krumholz HM. Changes in outcomes for internal medicine inpatients after work-hour regulations. Annals Of Internal Medicine 2007, 147: 97-103. PMID: 17548401, DOI: 10.7326/0003-4819-147-2-200707170-00163.Peer-Reviewed Original ResearchConceptsIntensive care unit utilizationLength of stayDrug-drug interactionsWork-hour regulationsNonteaching servicesHospital deathPharmacist interventionsReadmission ratesConsecutive patientsRetrospective cohort studyInternal medicine patientsInternal medicine inpatientsUnit utilizationAdverse drug-drug interactionsTeaching serviceAcademic medical centerCohort studyDischarge dispositionMedicine inpatientsMedicine patientsFatigue-related errorsMedical CenterRehabilitation facilityRate of dischargePatients
2006
Acute, Severe Noncardiac Conditions in Patients with Acute Myocardial Infarction
Lichtman JH, Fathi A, Radford MJ, Lin Z, Loeser CS, Krumholz HM. Acute, Severe Noncardiac Conditions in Patients with Acute Myocardial Infarction. The American Journal Of Medicine 2006, 119: 843-850. PMID: 17000215, DOI: 10.1016/j.amjmed.2006.03.040.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionNoncardiac conditionsHospital mortalityPrognostic importanceMyocardial infarctionMortality riskYale-New Haven HospitalExcessive mortality riskHospital mortality riskSubgroup of patientsSubset of patientsRisk-adjusted analysisRisk of deathMultivariable logistic modelCardiac severityInitial therapyConsecutive patientsClinical presentationMultivariable analysisMedical historyPatientsPatient recordsMortalityMarked increaseInfarctionComparison of Functional Status After Coronary Artery Bypass Grafting in Patients With and Without Diabetes Mellitus
Sahakyan K, Abramson JL, Krumholz HM, Vaccarino V. Comparison of Functional Status After Coronary Artery Bypass Grafting in Patients With and Without Diabetes Mellitus. The American Journal Of Cardiology 2006, 98: 619-623. PMID: 16923448, DOI: 10.1016/j.amjcard.2006.03.038.Peer-Reviewed Original ResearchConceptsPhysical Component Scale scoresCoronary artery bypassDiabetes mellitusPhysical functionMental healthArtery bypassScale scoreRisk of morbidityMental component scaleShort formHealth Survey dataDM statusFirst CABGCABG surgeryBaseline characteristicsConsecutive patientsFunctional recoveryFunctional statusPhysical functioningHealth SurveyCABGPatientsScore changeMellitusComponent scale
2004
Incidence, predictors at admission, and impact of worsening renal function among patients hospitalized with heart failure
Forman DE, Butler J, Wang Y, Abraham WT, O'Connor CM, Gottlieb SS, Loh E, Massie BM, Rich MW, Stevenson LW, Young JB, Krumholz HM. Incidence, predictors at admission, and impact of worsening renal function among patients hospitalized with heart failure. Journal Of The American College Of Cardiology 2004, 43: 61-67. PMID: 14715185, DOI: 10.1016/j.jacc.2003.07.031.Peer-Reviewed Original ResearchConceptsRenal functionHF patientsHospitalized heart failure patientsHistory of HFChronic HF patientsDay of admissionHeart failure patientsLength of hospitalizationSystolic blood pressureRelative risk ratiosAssociation of developmentMajority of casesRegression model analysisAdmission creatinineHospital deathHospital outcomesChart reviewClinical characteristicsFailure patientsSerum creatinineBlood pressureClinical predictorsConsecutive patientsDiabetes mellitusHeart failure
2002
Differences between African Americans and whites in the outcome of heart failure: Evidence for a greater functional decline in African Americans
Vaccarino V, Gahbauer E, Kasl SV, Charpentier PA, Acampora D, Krumholz HM. Differences between African Americans and whites in the outcome of heart failure: Evidence for a greater functional decline in African Americans. American Heart Journal 2002, 143: 1058-1067. PMID: 12075264, DOI: 10.1067/mhj.2002.122123.Peer-Reviewed Original ResearchMeSH KeywordsActivities of Daily LivingAgedAnalysis of VarianceBlack PeopleCohort StudiesFemaleHealth Services AccessibilityHeart FailureHospitalizationHumansIncomeMaleMiddle AgedOutcome Assessment, Health CareProportional Hazards ModelsProspective StudiesQuality of Health CareSocioeconomic FactorsWhite PeopleConceptsGreater functional declineHeart failureCare indicatorsFunctional declineAfrican AmericansSelf-reported health statusSigns of decompensationDecompensated heart failureHistory of hypertensionProspective cohort studyVentricular ejection fractionDaily living functionAfrican American patientsDaily living functioningRenal insufficiencyBaseline characteristicsCohort studyConsecutive patientsEjection fractionHospital admissionFunctional statusAmerican patientsPoor courseLiving functioningHigh risk
2000
Association of patients’ perception of health status and exercise electrocardiogram, myocardial perfusion imaging, and ventricular function measures
Mattera J, de Leon C, Wackers F, Williams C, Wang Y, Krumholz H. Association of patients’ perception of health status and exercise electrocardiogram, myocardial perfusion imaging, and ventricular function measures. American Heart Journal 2000, 140: 409-418. PMID: 10966538, DOI: 10.1067/mhj.2000.108518.Peer-Reviewed Original ResearchConceptsGeneral health perceptionHealth-related qualityPhysical functioningHealth perceptionMyocardial perfusion imagingHealth statusExercise testingPerfusion imagingMedical Outcomes Study Short Form SurveyPatients' health-related qualityShort Form SurveyAssociation of patientGeneral health statusImportant outcome measureSuccess of treatmentConsecutive patientsSF-36Metabolic equivalentsNoninvasive testingExercise testPatient outcomesIndividual patientsOutcome measuresForm SurveyPatient's viewpointPerceptions of Benefit and Risk of Patients Undergoing First‐time Elective Percutaneous Coronary Revascularization
Holmboe E, Fiellin D, Cusanelli E, Remetz M, Krumholz H. Perceptions of Benefit and Risk of Patients Undergoing First‐time Elective Percutaneous Coronary Revascularization. Journal Of General Internal Medicine 2000, 15: 632-637. PMID: 11029677, PMCID: PMC1495592, DOI: 10.1046/j.1525-1497.2000.90823.x.Peer-Reviewed Original ResearchConceptsElective percutaneous coronary revascularizationPercutaneous coronary revascularizationMajority of patientsCoronary revascularizationAbnormal diagnostic test resultsFuture myocardial infarctionRelief of symptomsRisk of patientsDiagnostic test resultsConsecutive patientsMean ageMyocardial infarctionLong-term benefitsPossible complicationsPotential complicationsPatient decisionPatient expectationsPatientsSemistructured questionnaireRevascularizationComplicationsRiskPerceptions of benefitsPotential riskQuestionnaireUtilization and effectiveness of a weight-based heparin nomogram at a large academic medical center.
Balcezak TJ, Krumholz HM, Getnick GS, Vaccarino V, Lin ZQ, Cadman EC. Utilization and effectiveness of a weight-based heparin nomogram at a large academic medical center. The American Journal Of Managed Care 2000, 6: 329-38. PMID: 10977433.Peer-Reviewed Original ResearchConceptsWeight-based nomogramWeight-based heparin nomogramTherapeutic rangeTherapeutic thresholdHeparin nomogramIntravenous heparin therapyProportion of patientsProspective cohort analysisLarge academic medical centerInternal medicine serviceComputerized order entry systemAcademic medical centerEffective patient careSupratherapeutic aPTTsHeparin therapyConsecutive patientsOrder entry systemEfficacious therapyMedical CenterCohort analysisMedicine servicePatient carePhysician behaviorNomogramPatients
1998
Trends in costs of percutaneous transluminal coronary angioplasty.
Heiat A, Mattera JA, Henry GA, Chen YT, Krumholz HM. Trends in costs of percutaneous transluminal coronary angioplasty. The American Journal Of Managed Care 1998, 4: 1667-74. PMID: 10339099.Peer-Reviewed Original ResearchConceptsPercutaneous transluminal coronary angioplastyTransluminal coronary angioplastyCoronary angioplastyClinical outcomesElective percutaneous transluminal coronary angioplastyYale-New Haven HospitalCatheterization laboratory costsMedical chart reviewGroup of patientsTotal hospital costsLength of stayHospital cost accounting systemChart reviewClinical characteristicsConsecutive patientsAngiographic featuresHospital recordsContrast volumeRetrospective studyPatient populationHospital costsLesion characteristicsStent useCatheterization laboratoryPatient profilesSex Differences in Mortality After Myocardial Infarction: Evidence for a Sex-Age Interaction
Vaccarino V, Horwitz RI, Meehan TP, Petrillo MK, Radford MJ, Krumholz HM. Sex Differences in Mortality After Myocardial Infarction: Evidence for a Sex-Age Interaction. JAMA Internal Medicine 1998, 158: 2054-2062. PMID: 9778206, DOI: 10.1001/archinte.158.18.2054.Peer-Reviewed Original ResearchConceptsMyocardial infarctionMortality rateAge groupsSex-age interactionOlder womenHigh mortalityHigher hospital mortality rateSex differencesAge group 75 yearsHospital mortality rateRetrospective cohort studyProcess of careYounger age groupsSame age groupHospital deathOlder patientsCohort studyConsecutive patientsPatient ageComorbid conditionsHospital characteristicsClinical severityMedical recordsConnecticut hospitalsHigher oddsTrends in the Quality of Care for Medicare Beneficiaries Admitted to the Hospital With Unstable Angina
Krumholz H, Philbin D, Wang Y, Vaccarino V, Murillo J, Therrien M, Williams J, Radford M. Trends in the Quality of Care for Medicare Beneficiaries Admitted to the Hospital With Unstable Angina. Journal Of The American College Of Cardiology 1998, 31: 957-963. PMID: 9561993, DOI: 10.1016/s0735-1097(98)00106-5.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngina, UnstableAnticoagulantsAspirinConnecticutFemaleGuideline AdherenceHeparinHospitalsHumansMaleMedicarePlatelet Aggregation InhibitorsPractice Guidelines as TopicQuality Indicators, Health CareQuality of Health CareRetrospective StudiesSurvival AnalysisUnited StatesConceptsUse of aspirinUnstable anginaElderly patientsConsecutive patientsHospital admissionRetrospective cohort studyPrincipal discharge diagnosisPatterns of treatmentCare of patientsGuideline-based useQuality of careHealth care policyAHCPR guidelinesChest painHospital dischargeCohort studyMedical chartsPatient factorsDischarge diagnosisPatient outcomesPractice patternsConnecticut hospitalsPractice guidelinesAnginaMedicare beneficiaries
1997
Health after coronary stenting or balloon angioplasty: Results from the Stent Restenosis Study
Krumholz H, Cohen D, Williams C, Baim D, Brinker J, Cabin H, Heuser R, Hirshfeld J, Leon M, Moses J, Savage M, Cleman M. Health after coronary stenting or balloon angioplasty: Results from the Stent Restenosis Study. American Heart Journal 1997, 134: 337-344. PMID: 9327686, DOI: 10.1016/s0002-8703(97)70065-6.Peer-Reviewed Original ResearchConceptsStent Restenosis StudyCoronary stentingBalloon angioplastyRestenosis StudyDuke Activity Status IndexPalmaz-Schatz coronary stentingCanadian Cardiovascular Society classificationPalmaz-Schatz coronary stent implantationPercutaneous transluminal coronary angioplastyU.S. clinical sitesLong-term HRQoLForm Health SurveyHealth-related qualityMedical Outcomes StudyTransluminal coronary angioplastyCoronary stent implantationConventional balloon angioplastyDisease-specific measuresAngiographic restenosisConventional angioplastyIschemic eventsBodily painConsecutive patientsCoronary angioplastyCardiovascular perspectiveDifferences in physician compensation for cardiovascular services by age, sex, and race.
Krumholz HM, Fendrick AM, Williams C, Hynes WM. Differences in physician compensation for cardiovascular services by age, sex, and race. The American Journal Of Managed Care 1997, 3: 557-63. PMID: 10169524.Peer-Reviewed Original ResearchConceptsConsecutive patientsCoronary angioplastyCardiovascular servicesPercutaneous transluminal coronary angioplastyPatients 75 yearsTransluminal coronary angioplastyPercutaneous coronary angioplastyPatients 40Patients 65Patient characteristicsPatient groupInsurance statusCardiology practicePhysiciansStress testingAngioplastySignificant differencesPatientsLower ratesSimilar differencesPhysician compensationAgeSexYearsDifferences