2024
Procedure Volume and Outcomes With WATCHMAN Left Atrial Appendage Occlusion
Friedman D, Du C, Zimmerman S, Tan Z, Lin Z, Vemulapalli S, Kosinski A, Piccini J, Pereira L, Minges K, Faridi K, Masoudi F, Curtis J, Freeman J. Procedure Volume and Outcomes With WATCHMAN Left Atrial Appendage Occlusion. Circulation Cardiovascular Interventions 2024, 17: e013466. PMID: 38889251, PMCID: PMC11189610, DOI: 10.1161/circinterventions.123.013466.Peer-Reviewed Original ResearchConceptsVolume-outcome relationshipLikelihood of procedural successLeft atrial appendage occlusionProcedural successProcedure volumeAppendage occlusionNational Cardiovascular Data Registry LAAO RegistryVolume quartilesLeft atrial appendage occlusion devicesThree-level hierarchical generalized linear modelsMinimum volume thresholdsWatchman FLX deviceProcedural success rateHierarchical generalized linear modelsAssociated with outcomePhysician volumeWATCHMAN procedureFLX deviceOcclusion deviceVolume thresholdCardiovascular proceduresPhysiciansHospitalNational analysisSuccess rate
2023
Trends in the likelihood of receiving percutaneous coronary intervention in a low-volume hospital and disparities by sociodemographic communities
Wang C, Lindquist K, Krumholz H, Hsia R. Trends in the likelihood of receiving percutaneous coronary intervention in a low-volume hospital and disparities by sociodemographic communities. PLOS ONE 2023, 18: e0279905. PMID: 36652416, PMCID: PMC9847957, DOI: 10.1371/journal.pone.0279905.Peer-Reviewed Original ResearchMeSH KeywordsEthnicityHospitals, Low-VolumeHumansMedicaidPercutaneous Coronary InterventionRetrospective StudiesUnited StatesConceptsLow-volume hospitalsNon-Latinx WhitesRelative riskSociodemographic groupsLow-income zip codesHospital PCI volumeRetrospective cohort studyPercutaneous coronary interventionCoronary artery diseaseLow-volume centersFavorable patient outcomesLow-volume facilitiesZip code median incomeLow incomeRace/ethnicityCohort studyCoronary interventionLatinx patientsSecondary outcomesArtery diseasePCI centerPrimary outcomePCI volumeAsian patientsCertain socioeconomic factors
2021
Association Between Hospital Volumes and Clinical Outcomes for Patients With Nontraumatic Subarachnoid Hemorrhage
Leifer D, Fonarow G, Hellkamp A, Baker D, Hoh B, Prabhakaran S, Schoeberl M, Suter R, Washington C, Williams S, Xian Y, Schwamm L. Association Between Hospital Volumes and Clinical Outcomes for Patients With Nontraumatic Subarachnoid Hemorrhage. Journal Of The American Heart Association 2021, 10: e018373. PMID: 34325522, PMCID: PMC8475679, DOI: 10.1161/jaha.120.018373.Peer-Reviewed Original ResearchConceptsAnnual case volumeComprehensive Stroke Center (CSC) certificationStroke center certificationNational Inpatient SampleSubarachnoid hemorrhageNontraumatic subarachnoid hemorrhageCase volumeHospital mortalityClinical outcomesPoor outcomeCenter certificationSAH casesBetter outcomesVolume thresholdHospital annual case volumeHospital case volumeCases/yearBackground Previous studiesLogistic regression modelsSAH hospitalizationsHospital volumeAneurysm obliterationInpatient SampleOdds ratioImproved outcomesUse of Mechanical Circulatory Support Devices Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock
Dhruva SS, Ross JS, Mortazavi BJ, Hurley NC, Krumholz HM, Curtis JP, Berkowitz AP, Masoudi FA, Messenger JC, Parzynski CS, Ngufor CG, Girotra S, Amin AP, Shah ND, Desai NR. Use of Mechanical Circulatory Support Devices Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock. JAMA Network Open 2021, 4: e2037748. PMID: 33616664, PMCID: PMC7900859, DOI: 10.1001/jamanetworkopen.2020.37748.Peer-Reviewed Original ResearchMeSH KeywordsAgedAssisted CirculationCross-Sectional StudiesExtracorporeal Membrane OxygenationFemaleHeart ArrestHeart-Assist DevicesHospitals, High-VolumeHospitals, Low-VolumeHospitals, TeachingHumansIntra-Aortic Balloon PumpingMaleMiddle AgedMyocardial InfarctionPercutaneous Coronary InterventionRisk FactorsShock, CardiogenicConceptsMicroaxial left ventricular assist deviceIntra-aortic balloon pumpLeft ventricular assist devicePercutaneous coronary interventionAcute myocardial infarctionMechanical circulatory support devicesCardiogenic shockHospital-level variationSignificant hospital-level variationCirculatory support devicesMCS devicesUse of IABPDevice useMedian proportionAcute Myocardial Infarction ComplicatedCardiology-National Cardiovascular Data RegistryChest Pain-MI RegistryLimited clinical trial evidenceNational Cardiovascular Data RegistryMyocardial Infarction ComplicatedFirst medical contactSupport devicesClinical trial evidenceExtracorporeal membrane oxygenationCoronary artery stenosis
2020
Widening volume and persistent outcome disparity in valve operations: New York statewide analysis, 2005-2016
Shang M, Mori M, Gan G, Deng Y, Brooks C, Weininger G, Sallam A, Vallabhajosyula P, Geirsson A. Widening volume and persistent outcome disparity in valve operations: New York statewide analysis, 2005-2016. Journal Of Thoracic And Cardiovascular Surgery 2020, 164: 1796-1803.e5. PMID: 33431209, DOI: 10.1016/j.jtcvs.2020.11.098.Peer-Reviewed Original ResearchMeSH KeywordsCardiac Surgical ProceduresCoronary Artery BypassHospital MortalityHospitals, High-VolumeHospitals, Low-VolumeHumansNew YorkAssociation between coronary artery bypass graft center volume and year-to-year outcome variability: New York and California statewide analysis
Mori M, Weininger GA, Shang M, Brooks C, Mullan CW, Najem M, Malczewska M, Vallabhajosyula P, Geirsson A. Association between coronary artery bypass graft center volume and year-to-year outcome variability: New York and California statewide analysis. Journal Of Thoracic And Cardiovascular Surgery 2020, 161: 1035-1041.e1. PMID: 33070939, DOI: 10.1016/j.jtcvs.2020.07.119.Peer-Reviewed Original ResearchRelationship Between Hospital Surgical Aortic Valve Replacement Volume and Transcatheter Aortic Valve Replacement Outcomes
Hirji S, McCarthy E, Kim D, McGurk S, Ejiofor J, Val F, Kolkailah A, Rosner B, Shook D, Nyman C, Berry N, Sobieszczyk P, Pelletier M, Shah P, O’Gara P, Kaneko T. Relationship Between Hospital Surgical Aortic Valve Replacement Volume and Transcatheter Aortic Valve Replacement Outcomes. JACC Cardiovascular Interventions 2020, 13: 335-343. PMID: 32029250, PMCID: PMC8858441, DOI: 10.1016/j.jcin.2019.09.048.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAortic ValveClinical CompetenceDatabases, FactualFemaleHeart Valve Prosthesis ImplantationHospitals, High-VolumeHospitals, Low-VolumeHumansMaleMedicareOutcome and Process Assessment, Health CareQuality Indicators, Health CareRisk AssessmentRisk FactorsTime FactorsTranscatheter Aortic Valve ReplacementTreatment OutcomeUnited StatesConceptsTranscatheter aortic valve replacementSurgical aortic valve replacementTranscatheter aortic valve replacement outcomesAortic valve replacementValve replacementConcomitant coronary artery bypass graft surgeryGroup 2Aortic valve replacement volumesGroup 1Group 3Group 4Surgical aortic valve replacement volumeCoronary artery bypass graft surgeryTranscatheter aortic valve replacement procedureArtery bypass graft surgeryAortic valve replacement proceduresYear post-procedureOpen-heart proceduresRisk-adjusted odds ratioMultivariate Cox regressionHeart valve proceduresLow-volume centersValve replacement proceduresTAVR admissionsBypass graft surgery
2019
Hospital Factors Associated With Interhospital Transfer Destination for Stroke in the Northeast United States
Zachrison K, Onnela J, Reeves M, Hernandez A, Camargo C, Zhao X, Matsouaka R, Goldstein J, Metlay J, Schwamm L. Hospital Factors Associated With Interhospital Transfer Destination for Stroke in the Northeast United States. Journal Of The American Heart Association 2019, 9: e011575. PMID: 31888430, PMCID: PMC6988147, DOI: 10.1161/jaha.118.011575.Peer-Reviewed Original ResearchMeSH KeywordsCatchment Area, HealthDatabases, FactualDelivery of Health Care, IntegratedFibrinolytic AgentsHospitalsHospitals, High-VolumeHospitals, Low-VolumeHumansMedicarePatient TransferPractice Patterns, Physicians'Quality Indicators, Health CareRetrospective StudiesStrokeThrombolytic TherapyTissue Plasminogen ActivatorUnited StatesConceptsAcute ischemic strokeAlteplase administrationIschemic strokeUS hospitalsHospital qualityHospital stroke volumeTransfer destinationsHospital referral regionsHospital factorsNumber of hospitalsStroke patientsHospital characteristicsStroke volumeMedicare claimsReferral regionsHospitalLogistic regressionStrokePatientsHospital performancePotential strategyAdministrationHome timeResult dataConnected dyadsRegionalization of emergency general surgery operations: A simulation study.
Becher RD, Sukumar N, DeWane MP, Gill TM, Maung AA, Schuster KM, Stolar MJ, Davis KA. Regionalization of emergency general surgery operations: A simulation study. Journal Of Trauma And Acute Care Surgery 2019, 88: 366-371. PMID: 31804419, PMCID: PMC7472889, DOI: 10.1097/ta.0000000000002543.Peer-Reviewed Original ResearchConceptsEmergency general surgeryHigh-volume hospitalsEGS careEmergency general surgery operationsCalifornia inpatient databaseCommon EGS operationsRisk-adjusted deathsSignificant survival benefitLow-volume hospitalsUmbilical hernia repairSmall bowel resectionHigh-mortality hospitalsGeneral surgery operationsRegional trauma systemEGS operationsBowel resectionAdult patientsPrimary outcomeSurvival benefitInpatient DatabaseHernia repairTrauma systemLevel IVGeneral surgeryCare managementHepatocellular carcinoma: Impact of academic setting and hospital volume on patient survival
Uhlig J, Sellers CM, Khan SA, Cha C, Kim HS. Hepatocellular carcinoma: Impact of academic setting and hospital volume on patient survival. Surgical Oncology 2019, 31: 111-118. PMID: 31654956, DOI: 10.1016/j.suronc.2019.10.009.Peer-Reviewed Original ResearchMeSH KeywordsAcademic Medical CentersAntineoplastic Combined Chemotherapy ProtocolsCarcinoma, HepatocellularCombined Modality TherapyDatabases, FactualFemaleFollow-Up StudiesHepatectomyHospitals, High-VolumeHospitals, Low-VolumeHumansLiver NeoplasmsLiver TransplantationMaleMiddle AgedPractice Patterns, Physicians'PrognosisRetrospective StudiesSurvival RateConceptsOverall survivalHepatocellular carcinomaAcademic centersHospital volumePatient survivalInterventional oncologyYoung African American patientsHigh-volume academic centersMultivariable Cox regressionFirst-line treatmentLow-volume centersLonger patient survivalAfrican American patientsHCC treatment modalitiesNon-academic centersLiver transplantMultivariable adjustmentPatient demographicsSurgical resectionLine treatmentCox regressionPotential confoundersVolume centersTreatment modalitiesAmerican patients
2018
A survey of vascular specialists’ practice patterns of inferior vena cava filter placement and retrieval
Brahmandam A, Skrip L, Sumpio B, Indes J, Dardik A, Sarac T, Rectenwald J, Chaar CIO. A survey of vascular specialists’ practice patterns of inferior vena cava filter placement and retrieval. Vascular 2018, 27: 291-298. PMID: 30501583, DOI: 10.1177/1708538118815394.Peer-Reviewed Original ResearchMeSH KeywordsAttitude of Health PersonnelDevice RemovalHealth Care SurveysHealth Knowledge, Attitudes, PracticeHospitals, High-VolumeHospitals, Low-VolumeHumansPractice Patterns, Physicians'Prosthesis ImplantationRadiologistsRadiology, InterventionalSurgeonsTime FactorsUltrasonography, Doppler, DuplexUnited StatesVena Cava FiltersConceptsInferior vena cava filterVascular specialistsIVCF retrievalPractice patternsBronchoscopy forcepsRetrieval of IVCFTemporary inferior vena cava filterPermanent inferior vena cava filterInferior vena cava filter placementVena cava filter placementRetrievable inferior vena cava filtersLaser sheathLowest renal veinTertiary care centerCava filter placementVena cava filtersMajority of respondersChi-square testTwo-sample t-testVenous duplexRenal veinCare centerFilter placementSocietal guidelinesLower extremitiesHospital Quality Metrics: “America's Best Hospitals” and Outcomes After Ischemic Stroke
Lichtman JH, Leifheit EC, Wang Y, Goldstein LB. Hospital Quality Metrics: “America's Best Hospitals” and Outcomes After Ischemic Stroke. Journal Of Stroke And Cerebrovascular Diseases 2018, 28: 430-434. PMID: 30415916, DOI: 10.1016/j.jstrokecerebrovasdis.2018.10.022.Peer-Reviewed Original ResearchMeSH KeywordsBrain IschemiaHospital Bed CapacityHospital MortalityHospitalsHospitals, High-VolumeHospitals, Low-VolumeHospitals, PrivateHospitals, RuralHospitals, TeachingHumansJoint Commission on Accreditation of Healthcare OrganizationsPatient ReadmissionPostoperative ComplicationsProcess Assessment, Health CareQuality Indicators, Health CareRisk FactorsStrokeTime FactorsTreatment OutcomeUnited StatesConceptsTop-ranked hospitalsRisk-standardized mortalityHigher readmissionBest HospitalsIschemic strokeAmerica's Best HospitalsHospital-level careHospital Compare dataHospital quality metricsHospital volumeStroke measuresHospital characteristicsReadmissionBetter outcomesLower mortalityHospitalMortalityMedicaid ServicesOutcomesStrokeWorld ReportHospital variation in utilization and success of trial of labor after a prior cesarean
Xu X, Lee HC, Lin H, Lundsberg LS, Campbell KH, Lipkind HS, Pettker CM, Illuzzi JL. Hospital variation in utilization and success of trial of labor after a prior cesarean. American Journal Of Obstetrics And Gynecology 2018, 220: 98.e1-98.e14. PMID: 30278176, DOI: 10.1016/j.ajog.2018.09.034.Peer-Reviewed Original ResearchMeSH KeywordsAdultCaliforniaCesarean SectionCohort StudiesDatabases, FactualFemaleGestational AgeHospitals, High-VolumeHospitals, Low-VolumeHumansInfant, NewbornMaternal AgePatient SafetyPregnancyPregnancy OutcomeRetrospective StudiesRisk AssessmentTrial of LaborUterine RuptureVaginal Birth after CesareanConceptsSuccess of trialCesarean deliveryTrial of laborHospital variationSuccess rateLow success rateNewborn hospital discharge recordsPatient clinical risk factorsSevere unexpected newborn complicationsNewborn respiratory complicationsUnexpected newborn complicationsClinical risk factorsPrior cesarean deliveryHospital discharge recordsPatient case mixBirth certificate dataMidwife-attended birthsAnesthesia availabilityNewborn infectionRespiratory complicationsUterine ruptureNewborn morbidityPrior cesareanNewborn complicationsVaginal birthAssociation of Facility and System Factors With Survival Among Pediatric Patients With Surgically Treated Head and Neck Sarcomas
Cheraghlou S, Li H, Judson BL. Association of Facility and System Factors With Survival Among Pediatric Patients With Surgically Treated Head and Neck Sarcomas. JAMA Otolaryngology - Head & Neck Surgery 2018, 144: 455-456. PMID: 29800240, PMCID: PMC6136052, DOI: 10.1001/jamaoto.2018.0183.Peer-Reviewed Original ResearchThe Effect of Hospital Volume on Breast Cancer Mortality
Greenup R, Obeng-Gyasi S, Thomas S, Houck K, Lane W, Blitzblau R, Hyslop T, Hwang E. The Effect of Hospital Volume on Breast Cancer Mortality. Annals Of Surgery 2018, 267: 375-381. PMID: 27893532, PMCID: PMC5994238, DOI: 10.1097/sla.0000000000002095.Peer-Reviewed Original ResearchConceptsHigh-volume centersNational Cancer Data BaseHospital volumeVolume centersBreast cancerHazard ratioImproved survivalStage 0Case volumeMultivariable Cox proportional hazards modelsMultidisciplinary breast cancer treatmentMultivariable Cox proportional hazardsSurgeons National Cancer Data BaseCox proportional hazards modelAnnual hospital volumeLess common cancersUnilateral breast cancerBreast cancer mortalityBreast cancer patientsCubic spline analysisLog-rank testBreast cancer treatmentCox proportional hazardsProportional hazards modelHigher case volume
2017
Role of Hospital Volumes in Identifying Low-Performing and High-Performing Aortic and Mitral Valve Surgical Centers in the United States
Khera R, Pandey A, Koshy T, Ayers C, Nallamothu BK, Das SR, Drazner MH, Jessen ME, Kirtane AJ, Gardner TJ, de Lemos JA, Bhatt DL, Kumbhani DJ. Role of Hospital Volumes in Identifying Low-Performing and High-Performing Aortic and Mitral Valve Surgical Centers in the United States. JAMA Cardiology 2017, 2: 1322-1331. PMID: 29117319, PMCID: PMC5815001, DOI: 10.1001/jamacardio.2017.4003.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAortic ValveBayes TheoremCoronary Artery BypassDatabases, FactualFemaleHeart Valve Prosthesis ImplantationHospital Bed CapacityHospital MortalityHospitals, High-VolumeHospitals, Low-VolumeHospitals, TeachingHumansMaleMiddle AgedMitral ValveMitral Valve AnnuloplastyQuality of Health CareUnited StatesConceptsSurgical aortic valve replacementRisk-standardized mortality ratesMV replacementHospital procedure volumeMV repair proceduresHospital volumeSurgical proceduresProcedure volumeMitral Valve Surgical ProceduresHospital risk-standardized mortality ratesHigh-volume tertilesHospital surgical volumeMV surgical proceduresRisk-standardized outcomesAortic valve replacementCoronary artery bypassLow-volume hospitalsGood surgical outcomeMedian annual volumeRisk-adjusted outcomesLowest volume tertileHospital performanceRepair proceduresSAVR proceduresArtery bypassHospital Centralization Impacts High-Risk Lung and Bladder Cancer Surgical Patients
Lieberman-Cribbin W, Galsky M, Casey M, Liu B, Oh W, Flores R, Taioli E. Hospital Centralization Impacts High-Risk Lung and Bladder Cancer Surgical Patients. Cancer Investigation 2017, 35: 652-661. PMID: 29243986, DOI: 10.1080/07357907.2017.1406495.Peer-Reviewed Original ResearchMeSH KeywordsFemaleHospitals, High-VolumeHospitals, Low-VolumeHumansLength of StayLung NeoplasmsMalePostoperative ComplicationsUrinary Bladder NeoplasmsConceptsLow-volume hospitalsVolume hospitalsBladder cancer mortalityNew York Statewide Planning and Research Cooperative System databasePatient riskHigh surgical risk patientsHigh-volume hospitalsEstimate patients' riskLonger length of stayCancer surgical patientsStatewide Planning and Research Cooperative System databaseSurgical risk patientsCancer mortalityLength of stayRisk patientsSurgical patientsSystem databaseHospitalHospital CentralLonger lengthBladderPatientsLungRiskHospital Characteristics Associated With Risk-standardized Readmission Rates
Horwitz LI, Bernheim SM, Ross JS, Herrin J, Grady JN, Krumholz HM, Drye EE, Lin Z. Hospital Characteristics Associated With Risk-standardized Readmission Rates. Medical Care 2017, 55: 528-534. PMID: 28319580, PMCID: PMC5426655, DOI: 10.1097/mlr.0000000000000713.Peer-Reviewed Original ResearchImpact of hospital volume on outcomes for laparoscopic adhesiolysis for small bowel obstruction
Jean RA, O'Neill KM, Pei KY, Davis KA. Impact of hospital volume on outcomes for laparoscopic adhesiolysis for small bowel obstruction. Journal Of Surgical Research 2017, 214: 23-31. PMID: 28624050, DOI: 10.1016/j.jss.2017.02.045.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overDatabases, FactualFemaleHospital CostsHospitals, High-VolumeHospitals, Low-VolumeHumansIntestinal ObstructionIntestine, SmallLaparoscopyLength of StayLinear ModelsMaleMiddle AgedMultivariate AnalysisTissue AdhesionsTreatment OutcomeUnited StatesYoung AdultConceptsSmall bowel obstructionLength of stayHigh-volume hospitalsBowel obstructionHospital volumeVolume statusProcedural volumeSurgical proceduresDiagnosis of SBODecreased LOSShorter LOSNationwide Inpatient Sample dataHigh-volume statusHospital volume statusInstitutional procedural volumeIntra-abdominal malignanciesHigher hospital volumeLow-volume hospitalsHigh-volume centersMajor surgical proceduresSmall bowel resectionLow volume statusComplex surgical proceduresLaparoscopic lysisAdult patients
2016
Hospital Volume and Outcomes of Robot-Assisted Lobectomies
Tchouta LN, Park HS, Boffa DJ, Blasberg JD, Detterbeck FC, Kim AW. Hospital Volume and Outcomes of Robot-Assisted Lobectomies. CHEST Journal 2016, 151: 329-339. PMID: 27687847, DOI: 10.1016/j.chest.2016.09.008.Peer-Reviewed Original ResearchMeSH KeywordsAgedCase-Control StudiesCohort StudiesDatabases, FactualFemaleHospital MortalityHospitals, High-VolumeHospitals, Low-VolumeHumansLength of StayLinear ModelsLogistic ModelsLungLung NeoplasmsMaleMiddle AgedMultivariate AnalysisPneumonectomyPostoperative ComplicationsRetrospective StudiesRobotic Surgical ProceduresThoracic Surgery, Video-AssistedTreatment OutcomeConceptsLength of stayLow-volume centersHospital volumeClinical impactHealth care system-related factorsShorter mean LOSUtilization Project National Inpatient Sample databaseVolume/outcome relationshipLong-term clinical impactMean LOSNational Inpatient Sample databaseShorter LOSVideo-assisted thoracoscopic surgeryHospital operative volumeHigh-volume hospitalsIncidence of complicationsHigher hospital volumeThoracoscopic surgery lobectomyAnnual case volumeSystem-related factorsOutcomes of interestLOS outcomesInfectious complicationsInpatient mortalityIndependent predictors
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