2018
Assessment of US Hospital Compliance With Regulations for Patients’ Requests for Medical Records
Lye CT, Forman HP, Gao R, Daniel JG, Hsiao AL, Mann MK, deBronkart D, Campos HO, Krumholz HM. Assessment of US Hospital Compliance With Regulations for Patients’ Requests for Medical Records. JAMA Network Open 2018, 1: e183014. PMID: 30646219, PMCID: PMC6324595, DOI: 10.1001/jamanetworkopen.2018.3014.Peer-Reviewed Original Research
2017
Copy Fees and Limitation of Patients’ Access to Their Own Medical Records
Jaspers AW, Cox JL, Krumholz HM. Copy Fees and Limitation of Patients’ Access to Their Own Medical Records. JAMA Internal Medicine 2017, 177: 457-458. PMID: 28135350, DOI: 10.1001/jamainternmed.2016.8560.Peer-Reviewed Original Research
2016
Coronary Catheterization and Percutaneous Coronary Intervention in China: 10-Year Results From the China PEACE-Retrospective CathPCI Study
Zheng X, Curtis JP, Hu S, Wang Y, Yang Y, Masoudi FA, Spertus JA, Li X, Li J, Dharmarajan K, Downing NS, Krumholz HM, Jiang L. Coronary Catheterization and Percutaneous Coronary Intervention in China: 10-Year Results From the China PEACE-Retrospective CathPCI Study. JAMA Internal Medicine 2016, 176: 512. PMID: 26974883, PMCID: PMC5459379, DOI: 10.1001/jamainternmed.2016.0166.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngina, UnstableCardiac CatheterizationChinaCoronary Artery DiseaseDrug-Eluting StentsFemaleHospital MortalityHospitals, UrbanHumansLength of StayMaleMedical RecordsMiddle AgedMyocardial InfarctionOdds RatioOutcome Assessment, Health CarePercutaneous Coronary InterventionPostoperative ComplicationsPostoperative HemorrhageQuality of Health CareRetrospective StudiesStentsTime-to-TreatmentConceptsPercutaneous coronary interventionDrug-eluting stentsQuality of careCoronary catheterizationCoronary interventionNonobstructive coronary artery diseasePrimary percutaneous coronary interventionFuture quality improvement initiativesEvidence-based medicationsOutcomes of patientsCoronary artery diseaseClinical observational studyUse of catheterizationQuality improvement initiativesCalendar year 2001Hospital mortalityArtery diseasePatient characteristicsStable patientsTreatment patternsMedian lengthMean agePCI proceduresMedical recordsObservational study
2015
The Variation in Recovery
Spatz ES, Curry LA, Masoudi FA, Zhou S, Strait KM, Gross CP, Curtis JP, Lansky AJ, Soares Barreto-Filho JA, Lampropulos JF, Bueno H, Chaudhry SI, D'Onofrio G, Safdar B, Dreyer RP, Murugiah K, Spertus JA, Krumholz HM. The Variation in Recovery. Circulation 2015, 132: 1710-1718. PMID: 26350057, PMCID: PMC4858327, DOI: 10.1161/circulationaha.115.016502.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge of OnsetAlgorithmsAortic DissectionClassificationCoronary DiseaseDiagnostic Techniques, CardiovascularFemaleHumansMaleMedical RecordsMiddle AgedMyocardial InfarctionMyocardiumOxygen ConsumptionPhenotypePlaque, AtheroscleroticProspective StudiesReproducibility of ResultsRisk FactorsSex FactorsTreatment OutcomeYoung AdultConceptsAcute myocardial infarctionCoronary artery diseaseArtery diseaseClinical phenotypeNonobstructive coronary artery diseaseYoung AMI Patients (VIRGO) studyObstructive coronary artery diseaseYoung womenType 2 acute myocardial infarctionBiological disease mechanismsSubset of patientsThird universal definitionUnique clinical phenotypeCulprit lesionClinical characteristicsMyocardial infarctionTherapeutic efficacyUniversal definitionStudy participantsPatientsSupply-demand mismatchYoung adultsDisease mechanismsPatient studiesCurrent classification schemes
2011
Development, validation, and results of a measure of 30‐day readmission following hospitalization for pneumonia
Lindenauer PK, Normand S, Drye EE, Lin Z, Goodrich K, Desai MM, Bratzler DW, O'Donnell WJ, Metersky ML, Krumholz HM. Development, validation, and results of a measure of 30‐day readmission following hospitalization for pneumonia. Journal Of Hospital Medicine 2011, 6: 142-150. PMID: 21387551, DOI: 10.1002/jhm.890.Peer-Reviewed Original ResearchConceptsHospital readmission ratesReadmission ratesOdds of readmissionRetrospective cohort studyMedical record reviewPrincipal discharge diagnosisDays of treatmentElderly patientsHospital dischargeCohort studyRecord reviewDischarge diagnosisUnadjusted ratesOutpatient MedicareMedical recordsAdministrative claimsMedicare beneficiariesReadmissionPneumoniaRisk-standardized hospital readmission ratesHospital
2009
What are covering doctors told about their patients? Analysis of sign-out among internal medicine house staff
Horwitz LI, Moin T, Krumholz HM, Wang L, Bradley EH. What are covering doctors told about their patients? Analysis of sign-out among internal medicine house staff. BMJ Quality & Safety 2009, 18: 248. PMID: 19651926, PMCID: PMC2722040, DOI: 10.1136/qshc.2008.028654.Peer-Reviewed Original Research
2008
Consequences of Inadequate Sign-out for Patient Care
Horwitz LI, Moin T, Krumholz HM, Wang L, Bradley EH. Consequences of Inadequate Sign-out for Patient Care. JAMA Internal Medicine 2008, 168: 1755-1760. PMID: 18779462, DOI: 10.1001/archinte.168.16.1755.Peer-Reviewed Original ResearchConceptsHealth care providersClinical conditionsCare providersIntensive care unit transferPatient's clinical conditionCare of patientsHouse staff teamsAdverse eventsImportant adverse consequencesCase reportClinical informationAnticipatory guidancePatientsPatient careUnit transferIterative coding processHouse staffAdverse consequencesSignsCareDaysSessionsProvidersDiagnosisRecipientsAn Administrative Claims Measure Suitable for Profiling Hospital Performance on the Basis of 30-Day All-Cause Readmission Rates Among Patients With Heart Failure
Keenan PS, Normand SL, Lin Z, Drye EE, Bhat KR, Ross JS, Schuur JD, Stauffer BD, Bernheim SM, Epstein AJ, Wang Y, Herrin J, Chen J, Federer JJ, Mattera JA, Wang Y, Krumholz HM. An Administrative Claims Measure Suitable for Profiling Hospital Performance on the Basis of 30-Day All-Cause Readmission Rates Among Patients With Heart Failure. Circulation Cardiovascular Quality And Outcomes 2008, 1: 29-37. PMID: 20031785, DOI: 10.1161/circoutcomes.108.802686.Peer-Reviewed Original ResearchConceptsRisk-standardized readmission ratesCause readmission rateReadmission ratesHeart failureHospital-level readmission ratesAdjusted readmission ratesAdministrative Claims MeasureUnadjusted readmission ratesHeart failure patientsHospital risk-standardized readmission ratesMedical record dataProfiling Hospital PerformanceHierarchical logistic regression modelsUse of MedicareMedical record modelNational Quality ForumLogistic regression modelsCause readmissionClaims-based modelsHospital dischargeFailure patientsC-statisticPreventable eventsPatientsQuality Forum
2007
Impact of Delay in Door-to-Needle Time on Mortality in Patients With ST-Segment Elevation Myocardial Infarction
McNamara RL, Herrin J, Wang Y, Curtis JP, Bradley EH, Magid DJ, Rathore SS, Nallamothu BK, Peterson ED, Blaney ME, Frederick P, Krumholz HM. Impact of Delay in Door-to-Needle Time on Mortality in Patients With ST-Segment Elevation Myocardial Infarction. The American Journal Of Cardiology 2007, 100: 1227-1232. PMID: 17920362, PMCID: PMC2715362, DOI: 10.1016/j.amjcard.2007.05.043.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overArrhythmias, CardiacCaliforniaCohort StudiesEmergency Service, HospitalEmergency TreatmentFemaleFibrinolytic AgentsHospital MortalityHumansMaleMedical RecordsMyocardial InfarctionOutcome Assessment, Health CareRegistriesRetrospective StudiesThrombolytic TherapyTime and Motion StudiesTime FactorsConceptsST-segment elevation myocardial infarctionElevation myocardial infarctionNeedle timeFibrinolytic therapyMyocardial infarctionHospital mortalitySymptom onsetOdds ratioReperfusion strategyAdjunctive medicationsHospital arrivalShorter doorTimely administrationNational registryRepresentative cohortPatientsMortalityInfarctionTherapyIndependent effectsCohortMinutesSmaller centersOnsetImpact of delayIschaemic 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 hospitalsSymptomsInfarctionCare
2006
Trends in Acute Myocardial Infarction in 4 US States Between 1992 and 2001
Masoudi FA, Foody JM, Havranek EP, Wang Y, Radford MJ, Allman RM, Gold J, Wiblin RT, Krumholz HM. Trends in Acute Myocardial Infarction in 4 US States Between 1992 and 2001. Circulation 2006, 114: 2806-2814. PMID: 17145994, DOI: 10.1161/circulationaha.106.611707.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionAngiotensin-converting enzyme inhibitorEnzyme inhibitorsPrimary discharge diagnosisHealth system perspectiveQuality of careMore comorbiditiesClinical characteristicsDischarge diagnosisMyocardial infarctionAMI careMedicare patientsMultivariable modelTreatment criteriaMedicare populationTreatment ratesAspirinHealth impactsMortalityCarePresent studyOutcomesIndicator definitionsDiverse populationsInhibitorsAn Administrative Claims Model Suitable for Profiling Hospital Performance Based on 30-Day Mortality Rates Among Patients With an Acute Myocardial Infarction
Krumholz HM, Wang Y, Mattera JA, Wang Y, Han LF, Ingber MJ, Roman S, Normand SL. An Administrative Claims Model Suitable for Profiling Hospital Performance Based on 30-Day Mortality Rates Among Patients With an Acute Myocardial Infarction. Circulation 2006, 113: 1683-1692. PMID: 16549637, DOI: 10.1161/circulationaha.105.611186.Peer-Reviewed Original ResearchAn Administrative Claims Model Suitable for Profiling Hospital Performance Based on 30-Day Mortality Rates Among Patients With Heart Failure
Krumholz HM, Wang Y, Mattera JA, Wang Y, Han LF, Ingber MJ, Roman S, Normand SL. An Administrative Claims Model Suitable for Profiling Hospital Performance Based on 30-Day Mortality Rates Among Patients With Heart Failure. Circulation 2006, 113: 1693-1701. PMID: 16549636, DOI: 10.1161/circulationaha.105.611194.Peer-Reviewed Original Research
2004
Regional variations in racial differences in the treatment of elderly patients hospitalized with acute myocardial infarction
Rathore SS, Masoudi FA, Havranek EP, Krumholz HM. Regional variations in racial differences in the treatment of elderly patients hospitalized with acute myocardial infarction. The American Journal Of Medicine 2004, 117: 811-822. PMID: 15589484, PMCID: PMC2790535, DOI: 10.1016/j.amjmed.2004.06.034.Peer-Reviewed Original ResearchConceptsBeta-blocker useMyocardial infarctionWhite patientsCoronary revascularizationBlack patientsRacial differencesCardiac catheterization useLower crude ratesUse of aspirinDay of admissionHealth care useTreatment of patientsAcute myocardial infarctionService Medicare beneficiariesMedical record dataQuality of careElderly feeRevascularization useAspirin useMultivariable adjustmentElderly patientsCardiac catheterizationCardiac proceduresCare useCrude rate
2001
Predictors of costs of caring for elderly patients discharged with heart failure
Wexler D, Chen J, Smith G, Radford M, Yaari S, Bradford W, Krumholz H. Predictors of costs of caring for elderly patients discharged with heart failure. American Heart Journal 2001, 142: 350-357. PMID: 11479477, DOI: 10.1067/mhj.2001.116476.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overConnecticutFemaleHealth Services for the AgedHeart FailureHospital CostsHumansLength of StayMaleMedical RecordsMedicareModels, EconomicOutcome Assessment, Health CarePatient DischargePatient ReadmissionPredictive Value of TestsRetrospective StudiesRisk AssessmentRisk FactorsConceptsHeart failureIndependent correlatesHeart failure-related admissionsHeart failure-related readmissionsSubstantial hospital costsHeart failure admissionsHistory of strokeSubset of patientsPrincipal discharge diagnosisSignificant independent correlatesOutcomes 6 monthsPredictors of costsMedicare administrative databasesCause readmissionClinical characteristicsElderly patientsAverage admissionDischarge diagnosisKidney failureCause costsCorrelates of costsMedical recordsRisk factorsAdministrative databasesConnecticut hospitals
1998
Admission to Hospitals With On-Site Cardiac Catheterization Facilities
Krumholz H, Chen J, Murillo J, Cohen D, Radford M. Admission to Hospitals With On-Site Cardiac Catheterization Facilities. Circulation 1998, 98: 2010-2016. PMID: 9808598, DOI: 10.1161/01.cir.98.19.2010.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAngioplasty, Balloon, CoronaryCardiac Care FacilitiesCardiac CatheterizationCohort StudiesCoronary Artery BypassFemaleHealth Care CostsHospital MortalityHospitalizationHumansLength of StayMaleMedical RecordsPilot ProjectsRetrospective StudiesTime FactorsTreatment OutcomeConceptsSite cardiac catheterization facilitiesCardiac catheterization facilitiesAcute myocardial infarctionCatheterization facilitiesType of hospitalReadmission ratesCardiac proceduresMyocardial infarctionHospital costsMortality rateGood short-term clinical outcomesShort-term clinical outcomesLong-term mortality ratesAdjusted readmission ratesCardiac catheterization ratesBaseline patient characteristicsLong-term mortalityRetrospective cohort studyLower readmission ratesElderly Medicare patientsSignificant differencesCatheterization ratesRevascularization ratesCardiac catheterizationCohort studyWarfarin Use Following Ischemic Stroke Among Medicare Patients With Atrial Fibrillation
Brass LM, Krumholz HM, Scinto JD, Mathur D, Radford M. Warfarin Use Following Ischemic Stroke Among Medicare Patients With Atrial Fibrillation. JAMA Internal Medicine 1998, 158: 2093-2100. PMID: 9801175, DOI: 10.1001/archinte.158.19.2093.Peer-Reviewed Original ResearchConceptsUse of warfarinAtrial fibrillationIschemic strokeRecurrent strokeWarfarin useElderly patientsPrincipal diagnosisMedicare patientsLower riskConnecticut Peer Review OrganizationRegimen of warfarinElderly stroke patientsRisk of strokeAcute myocardial infarctionHigh-risk populationHigh rateChart reviewPeer review organizationsStroke patientsMyocardial infarctionWarfarin sodiumPatientsWarfarinFibrillationAnticoagulation
1997
Warfarin use among patients with atrial fibrillation.
Brass L, Krumholz H, Scinto J, Radford M. Warfarin use among patients with atrial fibrillation. Stroke 1997, 28: 2382-9. PMID: 9412618, DOI: 10.1161/01.str.28.12.2382.Peer-Reviewed Original ResearchConceptsAtrial fibrillationAdditional vascular risk factorsConnecticut Peer Review OrganizationRate of strokeVascular risk factorsStroke preventionWarfarin anticoagulationChart reviewElderly patientsRelative contraindicationPeer review organizationsRisk factorsMedicare patientsAnticoagulationHigh riskPatientsWarfarinFibrillationStrokeContraindicationsAspirinReview organizationsPopulation sampleHospitalizationMonthsQuality of Care for Elderly Patients Hospitalized With Heart Failure
Krumholz HM, Wang Y, Parent EM, Mockalis J, Petrillo M, Radford MJ. Quality of Care for Elderly Patients Hospitalized With Heart Failure. JAMA Internal Medicine 1997, 157: 2242-2247. PMID: 9343001, DOI: 10.1001/archinte.1997.00440400092011.Peer-Reviewed Original ResearchConceptsHeart failureQuality of careEnzyme inhibitorsElderly patientsClinical practiceResearch Clinical Practice GuidelinesLeft ventricular ejection fractionLeft ventricular systolic functionRetrospective medical record reviewAngiotensin-converting enzyme inhibitorSevere aortic stenosisPercentage of patientsVentricular systolic functionMedical record reviewVentricular ejection fractionClinical practice guidelinesPrincipal discharge diagnosisAcute care hospitalsActual clinical practiceHealth care policyChart reviewSystolic functionAortic stenosisAppropriate patientsCare hospitalReporting ejection fraction after myocardial infarction: an opportunity for quality improvement in echocardiography.
Goldberg DJ, Radford MJ, Krumholz HM. Reporting ejection fraction after myocardial infarction: an opportunity for quality improvement in echocardiography. Connecticut Medicine 1997, 61: 143-5. PMID: 9097485.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overEchocardiographyFemaleHumansMaleMedical RecordsMyocardial InfarctionVentricular Function, LeftConceptsMyocardial infarctionEjection fractionLeft ventricular ejection fractionVentricular ejection fractionVentricular systolic functionAcute myocardial infarctionCare of patientsSystolic functionVentricular functionEchocardiography studyMedicare beneficiariesInfarctionEchocardiographyReportPrincipal findings