2024
Characteristics of High-Performing Hospitals in Cardiogenic Shock Following Acute Myocardial Infarction
Saha A, Li S, de Lemos J, Pandey A, Bhatt D, Fonarow G, Nallamothu B, Wang T, Navar A, Peterson E, Matsouaka R, Bavry A, Das S, Grodin J, Khera R, Drazner M, Kumbhani D, Registry N. Characteristics of High-Performing Hospitals in Cardiogenic Shock Following Acute Myocardial Infarction. The American Journal Of Cardiology 2024, 221: 19-28. PMID: 38583700, DOI: 10.1016/j.amjcard.2024.04.002.Peer-Reviewed Original ResearchAMI-CSNational Cardiovascular Data Registry Chest Pain-MI RegistryAcute myocardial infarctionChest Pain-MI RegistryRisk adjustmentRisk-adjusted multivariate logistic regressionHigh-performing hospitalsHospital-level characteristicsAssociated with lower in-hospital mortalityAssociated with decreased mortalityMultivariate logistic regressionFactors associated with decreased mortalityLower In-Hospital MortalityMedian participant ageMyocardial infarctionIn-Hospital MortalityCohort databaseParticipant ageOutcomes researchLogistic regressionCardiogenic shockLeft ventricular assist deviceCo-morbiditiesRetrospective cohort databaseTertile
2023
Rates and reasons for hospital readmission after acute ischemic stroke in a US population-based cohort
Zhou L, Lansberg M, de Havenon A. Rates and reasons for hospital readmission after acute ischemic stroke in a US population-based cohort. PLOS ONE 2023, 18: e0289640. PMID: 37535655, PMCID: PMC10399731, DOI: 10.1371/journal.pone.0289640.Peer-Reviewed Original ResearchConceptsAcute ischemic strokeAcute renal failureHospital readmissionIschemic strokeReadmission ratesRenal failureRisk factorsUS population-based cohortUnplanned hospital readmissionNationwide Readmissions DatabaseRisk of readmissionVascular risk factorsHospital-level characteristicsPopulation-based cohortKaplan-Meyer analysisWorsened patient outcomesState administrative databasesModifiable comorbiditiesRecurrent strokeInitial hospitalizationDisadvantaged patientsLonger initial lengthMedicare insuranceAIS patientsSecondary stroke
2022
The relationship between stroke system organization and disparities in access to stroke center care in California
Zachrison K, Samuels‐Kalow M, Li S, Yan Z, Reeves M, Hsia R, Schwamm L, Camargo C. The relationship between stroke system organization and disparities in access to stroke center care in California. Journal Of The American College Of Emergency Physicians Open 2022, 3: e12706. PMID: 35316966, PMCID: PMC8921441, DOI: 10.1002/emp2.12706.Peer-Reviewed Original ResearchIschemic stroke patientsInterhospital transferStroke patientsReperfusion interventionsCenter careEthnic disparitiesAcute ischemic stroke patientsNon-Hispanic black patientsAsian/Pacific Islander patientsAcute ischemic strokeComprehensive stroke centerOdds of dischargeHospital-level characteristicsPacific Islander patientsNon-Hispanic Asian/Pacific IslandersNon-Hispanic blacksAsian/Pacific IslandersInterhospital patient transfersOutcomes of interestNon-Hispanic whitesHierarchical logistic regressionReperfusion therapyHospital dischargeIschemic strokeStroke centers
2020
Hospital Variation in Geriatric Surgical Safety for Emergency Operation
Becher RD, Sukumar N, DeWane MP, Stolar MJ, Gill TM, Schuster KM, Maung AA, Zogg CK, Davis KA. Hospital Variation in Geriatric Surgical Safety for Emergency Operation. Journal Of The American College Of Surgeons 2020, 230: 966-973.e10. PMID: 32032720, PMCID: PMC7409563, DOI: 10.1016/j.jamcollsurg.2019.10.018.Peer-Reviewed Original ResearchConceptsStandardized mortality ratioHospital-level characteristicsGeneral surgery operationsGeriatric patientsEmergency operationHospital variationEmergency general surgery operationsMean standardized mortality ratioCalifornia State Inpatient DatabaseHospital-based mortalitySignificant hospital variationPatients 65 yearsSubstantial excess mortalitySurgery operationsState Inpatient DatabasesMixed effects logistic regression modelsCommon general surgery operationsLow-mortality outliersLogistic regression modelsPostoperative mortalityHospital deathOlder patientsInpatient DatabaseMortality outcomesNonelective operations
2019
Analysis of weekend effect in severe acute liver injury: A nationwide database study
Do A, Ilagan‐Ying Y, Taddei TH. Analysis of weekend effect in severe acute liver injury: A nationwide database study. Health Science Reports 2019, 3: e139. PMID: 32166187, PMCID: PMC7060892, DOI: 10.1002/hsr2.139.Peer-Reviewed Original ResearchSevere acute liver injuryAcute liver injuryHospital mortalityWeekend admissionFull model approachLiver injuryTimely managementLarge national inpatient databaseNational inpatient databaseNationwide database studyHospital-level characteristicsRevision diagnosis codesMultiple logistic regressionSignificant mortality differenceLarger hospital sizeComplete covariate dataHospital-level dataEligible hospitalizationsAdmission dayPayer databasePrimary outcomeHispanic raceMale sexPoor outcomeInpatient DatabaseThe impact of safety‐net burden on in‐hospital outcomes after surgical aortic valve replacement
Ando T, Adegbala O, Akintoye E, Briasoulis A, Takagi H. The impact of safety‐net burden on in‐hospital outcomes after surgical aortic valve replacement. Journal Of Cardiac Surgery 2019, 34: 1178-1184. PMID: 31441545, DOI: 10.1111/jocs.14187.Peer-Reviewed Original ResearchConceptsSurgical aortic valve replacementSafety-net burdenAortic valve replacementSAVR outcomesValve replacementAcute kidney injuryMajor perioperative complicationsHospital-level characteristicsNationwide Inpatient SampleLength of staySafety-net hospitalNumber of admissionsHospital mortalityNonroutine dischargeValvular surgeryHospital outcomesHospital stayKidney injuryPerioperative complicationsDisadvantaged patientsInpatient SampleHospital costsUnadjusted modelsHospitalPatientsClinical and economic burden of heparin-induced thrombocytopenia in hospitalized patients undergoing percutaneous peripheral arterial interventions
Subahi A, Osman M, Adegbala O, Abubakar H, Kheiri B, Yassin A, Khalid M, Akintoye E, Eljack A, Osman K, Alkhouli M. Clinical and economic burden of heparin-induced thrombocytopenia in hospitalized patients undergoing percutaneous peripheral arterial interventions. Vascular 2019, 28: 81-86. PMID: 31382836, DOI: 10.1177/1708538119868615.Peer-Reviewed Original ResearchConceptsVenous thrombosis/pulmonary embolismAcute kidney injuryKidney injuryIschemic strokePulmonary embolismHigh riskDeep venous thrombosis/pulmonary embolismPercutaneous peripheral arterial interventionsICD-9-CM codesHospital mortality differenceProlonged hospital stayHospital-level characteristicsPeripheral arterial interventionsNational Inpatient SampleHospital outcomesHospital stayIntervention patientsAbsence of heparinBaseline characteristicsHome dischargeLonger hospitalizationArterial interventionsHospitalized patientsInpatient SampleThrombocytopeniaCharacteristics and Outcomes of Patients with Cardiogenic Shock Complicated by Acute Kidney Injury Requiring Hemodialysis
Inampudi C, Adegbala O, Akintoye E, Alvarez P, Briasoulis A. Characteristics and Outcomes of Patients with Cardiogenic Shock Complicated by Acute Kidney Injury Requiring Hemodialysis. The Journal Of Heart And Lung Transplantation 2019, 38: s63. DOI: 10.1016/j.healun.2019.01.141.Peer-Reviewed Original ResearchLength of stayCardiogenic shockOutcomes of patientsHospital mortalityAcute Kidney Injury Requiring HemodialysisPre-existing chronic kidney diseasePropensity score-matched groupsHigher comorbidity burdenAcute kidney injuryChronic kidney diseaseRenal replacement therapyHospital-level characteristicsRenal venous pressureNational Inpatient SampleComorbidity burdenHospital morbidityHospital outcomesKidney injuryElixhauser scoreRenal functionBiventricular functionDiabetes mellitusRenal perfusionVenous pressureHospitalization costsEvaluating mortality outlier hospitals to improve the quality of care in emergency general surgery.
Becher RD, DeWane MP, Sukumar N, Stolar MJ, Gill TM, Maung AA, Schuster KM, Davis KA. Evaluating mortality outlier hospitals to improve the quality of care in emergency general surgery. Journal Of Trauma And Acute Care Surgery 2019, 87: 297-306. PMID: 30908450, PMCID: PMC6660354, DOI: 10.1097/ta.0000000000002271.Peer-Reviewed Original ResearchConceptsStandardized mortality ratioOutlier hospitalsHospital variationMortality ratioStandardized mortalityEmergency general surgery operationsCalifornia State Inpatient DatabaseEGS operationsCommon EGS operationsSignificant hospital variationEmergency general surgeryHospital-level characteristicsHospital-level variablesSignificant excess mortalityGeneral surgery operationsState Inpatient DatabasesQuality improvement initiativesQuality of careHospital quality indicatorsNational Quality ForumEGS outcomesInpatient DatabaseExcess mortalityOnly hospitalEpidemiologic studiesCharacteristics and Outcomes of Patients With Cardiogenic Shock Utilizing Hemodialysis for Acute Kidney Injury
Adegbala O, Inampudi C, Adejumo A, Otuonye G, Akintoye E, Elsayed R, Williams K, Alvarez P, Afonso L, Briasoulis A. Characteristics and Outcomes of Patients With Cardiogenic Shock Utilizing Hemodialysis for Acute Kidney Injury. The American Journal Of Cardiology 2019, 123: 1816-1821. PMID: 30967283, DOI: 10.1016/j.amjcard.2019.02.038.Peer-Reviewed Original ResearchConceptsLength of stayAcute kidney injuryCardiogenic shockOutcomes of patientsHospital mortalityKidney injuryTemporary mechanical supportCause of CSPropensity score-matched groupsST-elevation myocardial infarctionMechanical circulatory support devicesHigher comorbidity burdenRenal replacement therapyElevation myocardial infarctionHospital-level characteristicsRenal venous pressureNational Inpatient SampleCirculatory support devicesComorbidity burdenHospital morbidityHospital outcomesRenal functionBiventricular functionRenal perfusionVenous pressure
2018
Clinical Impact of Diabetes Mellitus on Short-Term Outcomes andIn-Hospital Mortality of Cardiac Mechanical Support with Left Ventricular Assist Device (LVAD): A Retrospective Study from a National Database
Yassin A, Subahi A, Adegbala O, Abubakar H, Akintoye E, Ahmed A, Ismail A, Elhag A, Kambal A, Alade A, Shokr M, Weinberger J, Levine D, Afonso L. Clinical Impact of Diabetes Mellitus on Short-Term Outcomes andIn-Hospital Mortality of Cardiac Mechanical Support with Left Ventricular Assist Device (LVAD): A Retrospective Study from a National Database. Cardiovascular Revascularization Medicine 2018, 20: 883-886. PMID: 30578171, DOI: 10.1016/j.carrev.2018.12.011.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedDatabases, FactualDiabetes MellitusFemaleHeart FailureHeart-Assist DevicesHospital MortalityHumansMaleMiddle AgedProsthesis DesignProsthesis ImplantationRecovery of FunctionRegistriesRetrospective StudiesRisk AssessmentRisk FactorsTime FactorsTreatment OutcomeUnited StatesVentricular Dysfunction, LeftVentricular Function, LeftConceptsLeft ventricular assist deviceCardiac mechanical supportDiabetes mellitusCost of hospitalizationCardiac supportVentricular assist deviceHospital mortalityDiabetic patientsHeart failureClinical impactMultivariable logistic regression model analysisAssist deviceStage D heart failureAdvanced congestive heart failureNational Inpatient Sample databasePost-LVAD complicationsShort-term complicationsCongestive heart failureLogistic regression model analysisHospital-level characteristicsImpact of diabetesRegression model analysisInpatient mortalityLVAD implantationSecondary outcomesComparison of In-Hospital Outcomes of Patients With-Versus-Without Ischemic Cardiomyopathy Undergoing Left Ventricular Assist Device Placement
Abubakar H, Subahi A, Adegbala O, Yassin A, Akintoye E, Abdulrahman A, Ahmed A, Alade A, Pahuja M, Afonso L. Comparison of In-Hospital Outcomes of Patients With-Versus-Without Ischemic Cardiomyopathy Undergoing Left Ventricular Assist Device Placement. The American Journal Of Cardiology 2018, 123: 414-418. PMID: 30545482, DOI: 10.1016/j.amjcard.2018.10.039.Peer-Reviewed Original ResearchConceptsVentricular assist device placementPostoperative myocardial infarctionLength of stayHospital mortalityVascular complicationsLVAD placementMyocardial infarctionEnd pointLeft ventricular assist device placementNationwide Inpatient Sample databaseST-segment myocardial infarctionDevice placementPeriprocedural vascular complicationsHeart failure etiologyIn-Hospital OutcomesPrimary end pointSecondary end pointsClinical end pointsHospital-level characteristicsCost of hospitalizationHemorrhage requiring transfusionMixed-effects logistic modelHospital outcomesFailure etiologyIschemic cardiomyopathyThe impact of atrial fibrillation on transcatheter mitral valve repair outcomes: A propensity‐matched analysis
Subahi A, Munir A, Abubakar H, Akintoye E, Yassin A, Adegbala O, Alraies M, Elder M, Mohamad T, Kaki A, Schreiber T. The impact of atrial fibrillation on transcatheter mitral valve repair outcomes: A propensity‐matched analysis. Journal Of Interventional Cardiology 2018, 31: 925-931. PMID: 30456770, DOI: 10.1111/joic.12568.Peer-Reviewed Original ResearchConceptsTranscatheter mitral valve repairAtrial fibrillationHospital outcomesTranscatheter Mitral Valve Repair OutcomesICD-9-CM diagnostic codesMitral valve repair outcomesNational Inpatient Sample registryNon-routine hospital dischargeImpact of AFPrevalence of AFPropensity score-matched analysisHigher AF burdenPropensity-matched analysisRepresentative United States sampleHospital-level characteristicsMitral valve repairCost of hospitalizationLength of stayHospital mortalityAF burdenHospital dischargePatient characteristicsAF patientsBaseline rhythmTMVR proceduresAdherence to Pediatric Cardiac Arrest Guidelines Across a Spectrum of Fifty Emergency Departments: A Prospective, In Situ, Simulation‐based Study
Auerbach M, Brown L, Whitfill T, Baird J, Abulebda K, Bhatnagar A, Lutfi R, Gawel M, Walsh B, Tay KY, Lavoie M, Nadkarni V, Dudas R, Kessler D, Katznelson J, Ganghadaran S, Hamilton MF. Adherence to Pediatric Cardiac Arrest Guidelines Across a Spectrum of Fifty Emergency Departments: A Prospective, In Situ, Simulation‐based Study. Academic Emergency Medicine 2018, 25: 1396-1408. PMID: 30194902, DOI: 10.1111/acem.13564.Peer-Reviewed Original ResearchConceptsPulseless electrical activityCardiac arrest guidelinesBasic life supportLower-volume EDsPediatric patient volumePatient volumeCardiac arrestPediatric volumeAdherence scoreVentricular fibrillationVolume groupHospital cardiac arrest survival outcomesProvider experiencePediatric Advanced Life Support trainingAdvanced life support trainingBetter guideline adherenceLow pediatric volumeTotal adherence scoreHigh-volume hospitalsHospital-level characteristicsTrauma center designationMore providersLower mortality rateHospital-level dataCare of childrenValue-based purchasing may unfairly penalize specialty centers performing combined liver–colon multivisceral resections
Leeds I, Pronovost P, Austin J, Haut E. Value-based purchasing may unfairly penalize specialty centers performing combined liver–colon multivisceral resections. Journal Of Patient Safety And Risk Management 2018, 23: 143-148. DOI: 10.1177/2516043518790654.Peer-Reviewed Original ResearchSurgical site infection rateMultivisceral resectionInfection rateValue-Based Purchasing ProgramColon surgeryOverall surgical site infection rateConcurrent liver resectionElective colon surgerySurgical site infectionHospital-level characteristicsNational Inpatient SampleInadequate risk adjustmentMultivariable linear regressionAdult patientsLiver resectionSite infectionInpatient SampleSpecialty centersHospital ratesResectionHospital identifiersPurchasing ProgramRisk adjustmentValue-based purchasingLinear regressionFinancial Implications and Impact of Pre-existing Atrial Fibrillation on In-Hospital Outcomes in Patients Who Underwent Transcatheter Aortic Valve Implantation (from the National Inpatient Database)
Abubakar H, Yassin A, Akintoye E, Bakhit K, Pahuja M, Shokr M, Lieberman R, Afonso L. Financial Implications and Impact of Pre-existing Atrial Fibrillation on In-Hospital Outcomes in Patients Who Underwent Transcatheter Aortic Valve Implantation (from the National Inpatient Database). The American Journal Of Cardiology 2018, 121: 1587-1592. PMID: 29622287, DOI: 10.1016/j.amjcard.2018.02.052.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAortic Valve StenosisArrhythmias, CardiacAtrial FibrillationCardiac Pacing, ArtificialCardiac TamponadeComorbidityDatabases, FactualFemaleHeart ArrestHeart FailureHospital CostsHospital MortalityHumansLength of StayLinear ModelsLogistic ModelsMaleMyocardial InfarctionPacemaker, ArtificialPericardial EffusionPostoperative ComplicationsPostoperative HemorrhageStrokeTranscatheter Aortic Valve ReplacementUnited StatesConceptsTranscatheter aortic valve implantationPre-existing atrial fibrillationLength of stayPeriprocedural cardiac complicationsAortic valve implantationAtrial fibrillationCost of hospitalizationCardiac complicationsHospital mortalityEnd pointValve implantationLonger hospital LOSUnderwent Transcatheter Aortic Valve ImplantationPre-existing AFHospital LOSIncidence of AFLonger LOSNationwide Inpatient Sample databaseIn-Hospital OutcomesPrimary end pointSecondary end pointsClinical end pointsHospital-level characteristicsMixed-effects logistic modelTAVI patients
2017
Incidence and Outcomes of Heparin-Induced Thrombocytopenia in Patients Undergoing Transcatheter Aortic Valve Replacement
Telila T, Akintoye E, Ando T, Merid O, Mallikethi-Reddy S, Briasoulis A, Grines C, Afonso L. Incidence and Outcomes of Heparin-Induced Thrombocytopenia in Patients Undergoing Transcatheter Aortic Valve Replacement. The American Journal Of Cardiology 2017, 120: 300-303. PMID: 28576265, DOI: 10.1016/j.amjcard.2017.04.028.Peer-Reviewed Original ResearchMeSH KeywordsAged, 80 and overAnticoagulantsAortic Valve StenosisFemaleHeparinHospital MortalityHumansIncidenceKaplan-Meier EstimateMalePostoperative ComplicationsPrognosisRetrospective StudiesRisk FactorsSurvival RateThrombocytopeniaThromboembolismTranscatheter Aortic Valve ReplacementTreatment OutcomeUnited StatesConceptsVenous thrombosis/pulmonary embolismAcute kidney injuryHospital-level characteristicsHospital stayHospital mortalityKidney injuryPulmonary embolismHospital costsTranscatheter aortic valve replacementNationwide Inpatient Sample databaseOutcomes of HITPerioperative thromboembolic complicationsLonger hospital stayOutcomes of patientsAortic valve replacementHeparin-Induced ThrombocytopeniaMedian hospital costsImpact of HITTAVR groupCumulative incidenceInpatient mortalitySecondary outcomesThromboembolic complicationsValve replacementCardiac surgery
2016
“Halo effect” in trauma centers: does it extend to emergent colectomy?
Nagarajan N, Selvarajah S, Gani F, Alshaikh HN, Giuliano K, Zogg CK, Schneider EB, Haider AH. “Halo effect” in trauma centers: does it extend to emergent colectomy? Journal Of Surgical Research 2016, 203: 231-237. PMID: 27125867, DOI: 10.1016/j.jss.2016.01.037.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overColectomyDatabases, FactualDiverticulitis, ColonicEmergenciesFemaleHospital ChargesHospital MortalityHumansLength of StayLinear ModelsLogistic ModelsMaleMiddle AgedPoisson DistributionQuality Assurance, Health CareQuality Indicators, Health CareTrauma CentersTreatment OutcomeUnited StatesYoung AdultConceptsLength of stayNontrauma centersHospital-level characteristicsTrauma centerEmergent colectomyEmergency general surgery conditionsEmergency general surgery proceduresNationwide Emergency Department SampleEmergency surgical interventionOdds of mortalityEmergency Department SampleGeneral surgery proceduresNontrauma conditionsHospital mortalityMedian ageSurgical interventionSurgical conditionsImproved outcomesSex distributionSurgical careMedian chargePatientsSurgery proceduresSurgery conditionsCase mix
2015
Substantial Variation in Hospital Rankings after Adjusting for Hospital-Level Predictors of Publicly-Reported Hospital-Associated Clostridium difficile Infection Rates
Datta R, Kazerouni NN, Rosenberg J, Nguyen VQ, Phelan M, Billimek J, Cao C, McLendon P, Cummings K, Huang SS. Substantial Variation in Hospital Rankings after Adjusting for Hospital-Level Predictors of Publicly-Reported Hospital-Associated Clostridium difficile Infection Rates. Infection Control And Hospital Epidemiology 2015, 36: 464-466. PMID: 25782902, DOI: 10.1017/ice.2014.83.Peer-Reviewed Original ResearchConceptsClostridium difficile infection ratesDifficile infection ratesLong-term acute care hospitalInfection ratePolymerase chain reaction testingHospital-level predictorsHospital-level characteristicsAcute care hospitalsCare hospitalCommunity hospitalLTAC hospitalTeaching hospitalLicensed bedsReaction testingHospitalCalifornia hospitalsHospital rankings
2014
Racial/Ethnic Differences in Process of Care and Outcomes Among Patients Hospitalized With Intracerebral Hemorrhage
Xian Y, Holloway R, Smith E, Schwamm L, Reeves M, Bhatt D, Schulte P, Cox M, Olson D, Hernandez A, Lytle B, Anstrom K, Fonarow G, Peterson E. Racial/Ethnic Differences in Process of Care and Outcomes Among Patients Hospitalized With Intracerebral Hemorrhage. Stroke 2014, 45: 3243-3250. PMID: 25213344, DOI: 10.1161/strokeaha.114.005620.Peer-Reviewed Original ResearchConceptsWhite patientsAsian patientsRace/ethnicityCessation counselingLower oddsDeep venous thrombosis prophylaxisGuidelines-Stroke hospitalsStroke performance measuresVenous thrombosis prophylaxisHospital-level characteristicsMultivariable logistic regressionProcess of careEthnic differencesHospital mortalityThrombosis prophylaxisCause mortalityHospital outcomesSevere strokeDysphagia screeningBlack patientsIntracerebral hemorrhageMedian lengthHigher oddsStroke educationComfort measures
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