2021
Association between antecedent statin use and decreased mortality in hospitalized patients with COVID-19
Gupta A, Madhavan MV, Poterucha TJ, DeFilippis EM, Hennessey JA, Redfors B, Eckhardt C, Bikdeli B, Platt J, Nalbandian A, Elias P, Cummings MJ, Nouri SN, Lawlor M, Ranard LS, Li J, Boyle C, Givens R, Brodie D, Krumholz HM, Stone GW, Sethi SS, Burkhoff D, Uriel N, Schwartz A, Leon MB, Kirtane AJ, Wan EY, Parikh SA. Association between antecedent statin use and decreased mortality in hospitalized patients with COVID-19. Nature Communications 2021, 12: 1325. PMID: 33637713, PMCID: PMC7910606, DOI: 10.1038/s41467-021-21553-1.Peer-Reviewed Original ResearchConceptsAcute respiratory distress syndromeStatin usePrimary endpointCOVID-19Multivariable logistic regression modelStudy periodLower inpatient mortalityPropensity-matched cohortRespiratory distress syndromeCoronavirus disease 2019Electronic medical recordsLogistic regression modelsPropensity-score matchingHospital mortalityHyperinflammatory stateOutpatient medicationsClinical characteristicsInpatient mortalityStatin usersThrombotic complicationsDistress syndromeHospitalized patientsMyocardial injuryMedical recordsRetrospective analysisAssociation of Angiotensin‐Converting Enzyme Inhibitors and Angiotensin Receptor Blockers with the Risk of Hospitalization and Death in Hypertensive Patients with Coronavirus Disease‐19
Khera R, Clark C, Lu Y, Guo Y, Ren S, Truax B, Spatz ES, Murugiah K, Lin Z, Omer SB, Vojta D, Krumholz HM. Association of Angiotensin‐Converting Enzyme Inhibitors and Angiotensin Receptor Blockers with the Risk of Hospitalization and Death in Hypertensive Patients with Coronavirus Disease‐19. Journal Of The American Heart Association 2021, 10: e018086. PMID: 33624516, PMCID: PMC8403305, DOI: 10.1161/jaha.120.018086.Peer-Reviewed Original ResearchConceptsAngiotensin receptor blockersLower hospitalization riskACE inhibitorsCOVID-19 hospitalizationHospitalization riskHospital mortalityReceptor blockersValidation cohortAcute respiratory syndrome coronavirus 2 infectionSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infectionEnzyme inhibitorsSyndrome coronavirus 2 infectionAngiotensin converting enzyme (ACE) inhibitorsCoronavirus 2 infectionRisk of hospitalizationCoronavirus disease-19SARS-CoV-2COVID-19 preventionHypertensive patientsInpatient cohortOutpatient cohortContemporary cohortStudy cohortOutpatient studyMedicare group
2020
Association of Ticagrelor vs Clopidogrel With Net Adverse Clinical Events in Patients With Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention
You SC, Rho Y, Bikdeli B, Kim J, Siapos A, Weaver J, Londhe A, Cho J, Park J, Schuemie M, Suchard MA, Madigan D, Hripcsak G, Gupta A, Reich CG, Ryan PB, Park RW, Krumholz HM. Association of Ticagrelor vs Clopidogrel With Net Adverse Clinical Events in Patients With Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention. JAMA 2020, 324: 1640-1650. PMID: 33107944, PMCID: PMC7592033, DOI: 10.1001/jama.2020.16167.Peer-Reviewed Original ResearchMeSH KeywordsAcute Coronary SyndromeAdultAgedAged, 80 and overAlgorithmsAspirinCase-Control StudiesCause of DeathClopidogrelDatabases, FactualDyspneaFemaleHemorrhageHumansIschemiaMaleMiddle AgedMyocardial InfarctionNetwork Meta-AnalysisPercutaneous Coronary InterventionPropensity ScorePurinergic P2Y Receptor AntagonistsRecurrenceRepublic of KoreaRetrospective StudiesStrokeTicagrelorUnited StatesConceptsNet adverse clinical eventsAcute coronary syndromePercutaneous coronary interventionAdverse clinical eventsHemorrhagic eventsIschemic eventsHazard ratioCause mortalityCoronary syndromeCoronary interventionClinical eventsRisk of NACEClinical practiceLarge randomized clinical trialsPrimary end pointRetrospective cohort studyPropensity-matched pairsSummary hazard ratioRandomized clinical trialsRoutine clinical practiceSignificant differencesP2Y12 platelet inhibitorsTicagrelor groupCohort studySecondary outcomesLarge-scale evidence generation and evaluation across a network of databases (LEGEND): assessing validity using hypertension as a case study
Schuemie MJ, Ryan PB, Pratt N, Chen R, You SC, Krumholz HM, Madigan D, Hripcsak G, Suchard MA. Large-scale evidence generation and evaluation across a network of databases (LEGEND): assessing validity using hypertension as a case study. Journal Of The American Medical Informatics Association 2020, 27: 1268-1277. PMID: 32827027, PMCID: PMC7481033, DOI: 10.1093/jamia/ocaa124.Peer-Reviewed Original ResearchPrinciples of Large-scale Evidence Generation and Evaluation across a Network of Databases (LEGEND)
Schuemie MJ, Ryan PB, Pratt N, Chen R, You SC, Krumholz HM, Madigan D, Hripcsak G, Suchard MA. Principles of Large-scale Evidence Generation and Evaluation across a Network of Databases (LEGEND). Journal Of The American Medical Informatics Association 2020, 27: 1331-1337. PMID: 32909033, PMCID: PMC7481029, DOI: 10.1093/jamia/ocaa103.Peer-Reviewed Original ResearchConceptsNetwork of databasesLarge-scale Evidence GenerationObservational Health Data SciencesObservational health care databasesHealth Data SciencesHealth care dataElectronic health recordsData sciencePublication biasPatient-level informationGeneric overviewHealth recordsMethods addressAforementioned concernsHealth care databasesAnalytic codeNetworkNew paradigmSuch dataHackingEvidence generationDissemination of evidenceHypertension treatmentResidual confoundingAdministrative claimsAssociation of Use of an Intravascular Microaxial Left Ventricular Assist Device vs Intra-aortic Balloon Pump With In-Hospital Mortality and Major Bleeding Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock
Dhruva SS, Ross JS, Mortazavi BJ, Hurley NC, Krumholz HM, Curtis JP, Berkowitz A, Masoudi FA, Messenger JC, Parzynski CS, Ngufor C, Girotra S, Amin AP, Shah ND, Desai NR. Association of Use of an Intravascular Microaxial Left Ventricular Assist Device vs Intra-aortic Balloon Pump With In-Hospital Mortality and Major Bleeding Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock. JAMA 2020, 323: 734-745. PMID: 32040163, PMCID: PMC7042879, DOI: 10.1001/jama.2020.0254.Peer-Reviewed Original ResearchMeSH KeywordsAgedCause of DeathExtracorporeal Membrane OxygenationFemaleHeart ArrestHeart-Assist DevicesHemorrhageHospital MortalityHumansIntra-Aortic Balloon PumpingMaleMatched-Pair AnalysisMiddle AgedMyocardial InfarctionPercutaneous Coronary InterventionPropensity ScoreRegistriesRetrospective StudiesShock, CardiogenicST Elevation Myocardial InfarctionConceptsMicroaxial left ventricular assist deviceIntra-aortic balloon pumpLeft ventricular assist deviceAcute myocardial infarctionPercutaneous coronary interventionNational Cardiovascular Data RegistryCardiogenic shockHemodynamic supportMyocardial infarctionRegistry-based retrospective cohort studyCardiology-National Cardiovascular Data RegistryChest Pain-MI RegistryST-elevation myocardial infarctionMechanical circulatory support devicesGreater hemodynamic supportHospital major bleedingRetrospective cohort studyPropensity-matched pairsCirculatory support devicesVentricular assist deviceClinical laboratory dataHospital mortalityMajor bleedingHospital deathCohort study
2017
Comparing Outcomes of Coronary Artery Bypass Grafting Among Large Teaching and Urban Hospitals in China and the United States
Zheng Z, Zhang H, Yuan X, Rao C, Zhao Y, Wang Y, Normand SL, Krumholz HM, Hu S. Comparing Outcomes of Coronary Artery Bypass Grafting Among Large Teaching and Urban Hospitals in China and the United States. Circulation Cardiovascular Quality And Outcomes 2017, 10: e003327. PMID: 28611187, PMCID: PMC5482563, DOI: 10.1161/circoutcomes.116.003327.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedChinaCoronary Artery BypassCoronary Artery DiseaseFemaleHealthcare DisparitiesHospital Bed CapacityHospital MortalityHospitals, High-VolumeHospitals, TeachingHospitals, UrbanHumansLength of StayMaleMiddle AgedOdds RatioPrevalenceProcess Assessment, Health CarePropensity ScoreQuality Indicators, Health CareRegistriesRisk AssessmentRisk FactorsTime FactorsTreatment OutcomeUnited StatesYoung AdultConceptsIsolated CABG surgeryCoronary artery bypassUrban hospitalHospital mortalityArtery bypassCABG surgeryChinese Cardiac Surgery RegistryTotal hospital stayCardiac Surgery RegistryCoronary artery diseaseNational Inpatient SampleLarge teachingLength of staySignificant mortality differenceHospital staySecondary outcomesArtery diseasePrimary outcomeMedian lengthComparing outcomesInpatient SampleMortality differencesHigher ageHigh mortalityHospital
2016
Comparative Effectiveness of Generic Atorvastatin and Lipitor® in Patients Hospitalized with an Acute Coronary Syndrome
Jackevicius CA, Tu JV, Krumholz HM, Austin PC, Ross JS, Stukel TA, Koh M, Chong A, Ko DT. Comparative Effectiveness of Generic Atorvastatin and Lipitor® in Patients Hospitalized with an Acute Coronary Syndrome. Journal Of The American Heart Association 2016, 5: e003350. PMID: 27098970, PMCID: PMC4859299, DOI: 10.1161/jaha.116.003350.Peer-Reviewed Original ResearchConceptsGeneric atorvastatinACS hospitalizationSecondary outcomesClinical effectivenessAcute coronary syndrome hospitalizationPopulation-based cohort studyNew-onset diabetesAcute coronary syndromeDays of dischargePrespecified subgroup analysisPropensity-matched pairsInfrequent side effectsBrand-name medicationsSignificant differencesHealth care plansRecurrent ACSAdmission diagnosisAtorvastatin doseCardiovascular outcomesCoronary syndromeCohort studyRenal failureHeart failurePrimary outcomeMean age
2015
Effectiveness of implantable cardioverter-defibrillators in survivors of inhospital cardiac arrest
Chan PS, Krumholz HM, Spertus JA, Curtis LH, Li Y, Hammill BG, Nallamothu BK, investigators A. Effectiveness of implantable cardioverter-defibrillators in survivors of inhospital cardiac arrest. American Heart Journal 2015, 169: 870-878.e1. PMID: 26027626, PMCID: PMC4451609, DOI: 10.1016/j.ahj.2015.02.016.Peer-Reviewed Original ResearchConceptsInhospital cardiac arrestLong-term mortalityHospital cardiac arrestCardiac arrestICD treatmentLower long-term mortalityImplantable cardioverter-defibrillator therapyHigh illness acuityHigher unadjusted mortalityICD-treated patientsCardiac Arrest RegistryCardioverter-defibrillator therapyPulseless ventricular tachycardiaHigh-risk populationComparative effectiveness studiesLong-term survivalPropensity score analysisLower mortality rateArrest etiologyEligible survivorsICD trialsHospital deathICD therapyIndex hospitalizationUntreated patients