2020
Variation in Risk-standardized Rates and Causes of Unplanned Hospital Visits Within 7 Days of Hospital Outpatient Surgery
Desai MM, Zogg CK, Ranasinghe I, Parzynski CS, Lin Z, Gorbaty M, Merrill A, Krumholz HM, Drye EE. Variation in Risk-standardized Rates and Causes of Unplanned Hospital Visits Within 7 Days of Hospital Outpatient Surgery. Annals Of Surgery 2020, 276: e714-e720. PMID: 33214469, DOI: 10.1097/sla.0000000000004627.Peer-Reviewed Original ResearchConceptsUnplanned hospital visitsHospital outpatient surgeryHospital outpatient departmentsHospital visitsOutpatient surgeryShort-term safety outcomesFacility-level variationHierarchical logistic regression modelingPost-surgical visitSame-day surgeryHalf of proceduresLogistic regression modelingUrinary retentionStudy cohortUnplanned visitsClinical comorbiditiesOutpatient departmentOutpatient settingPreventable conditionPreventable reasonsBACKGROUND DATASafety outcomesMedicare feeSurgeryService beneficiaries
2015
National Trends in Pulmonary Embolism Hospitalization Rates and Outcomes for Adults Aged ≥65 Years in the United States (1999 to 2010)
Minges KE, Bikdeli B, Wang Y, Kim N, Curtis JP, Desai MM, Krumholz HM. National Trends in Pulmonary Embolism Hospitalization Rates and Outcomes for Adults Aged ≥65 Years in the United States (1999 to 2010). The American Journal Of Cardiology 2015, 116: 1436-1442. PMID: 26409636, PMCID: PMC4841688, DOI: 10.1016/j.amjcard.2015.07.068.Peer-Reviewed Original ResearchConceptsHospitalization ratesMortality rateReadmission ratesBlack patientsPrincipal discharge diagnosis codeOlder adultsCause readmission rateHospital mortality rateProportion of patientsRetrospective cohort studyDischarge diagnosis codesSkilled nursing facilitiesNational trendsSignificant racial differencesHigh rateHome health careHospital stayAdults AgedCohort studyMore patientsTherapeutic advancesDiagnosis codesMedicare feeNursing facilitiesSignificant burden
2014
Trends in left ventricular assist device use and outcomes among Medicare beneficiaries, 2004–2011
Lampropulos JF, Kim N, Wang Y, Desai MM, Barreto-Filho JA, Dodson JA, Dries DL, Mangi AA, Krumholz HM. Trends in left ventricular assist device use and outcomes among Medicare beneficiaries, 2004–2011. Open Heart 2014, 1: e000109. PMID: 25332817, PMCID: PMC4189322, DOI: 10.1136/openhrt-2014-000109.Peer-Reviewed Original ResearchDischarge dispositionLVAD implantationMortality rateRehospitalisation ratesIndex hospitalisationImplantation rateLeft ventricular assist device useVentricular assist device useMedicaid Services paymentsProportion of patientsLong-term outcomesPost-procedure lengthUse of LVADsDevice implantation ratesHospital daysHospitalisation costsHeartMate IILVAD useMedicare feeMedicare populationMedicare beneficiariesService beneficiariesHospitalisationDevice useStay
2013
Trends in Aortic Valve Replacement for Elderly Patients in the United States, 1999-2011
Barreto-Filho JA, Wang Y, Dodson JA, Desai MM, Sugeng L, Geirsson A, Krumholz HM. Trends in Aortic Valve Replacement for Elderly Patients in the United States, 1999-2011. JAMA 2013, 310: 2078-2084. PMID: 24240935, PMCID: PMC4089974, DOI: 10.1001/jama.2013.282437.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overAortic ValveBicuspid Aortic Valve DiseaseBlack PeopleCohort StudiesCoronary Artery BypassCross-Sectional StudiesFee-for-Service PlansFemaleHeart Defects, CongenitalHeart Valve DiseasesHeart Valve ProsthesisHeart Valve Prosthesis ImplantationHumansLength of StayMaleMedicarePatient ReadmissionTreatment OutcomeUnited StatesConceptsSurgical aortic valve replacementAortic valve replacementValve replacementProcedure ratesElderly patientsCoronary artery bypass graft surgeryArtery bypass graft surgeryCross-sectional cohort studyPatients 85 yearsBypass graft surgeryHigh mortality rateCause readmissionCABG surgeryGraft surgeryOlder patientsCohort studyReadmission ratesTranscatheter optionsBlack patientsTranscatheter treatmentMechanical prosthesesThirty-dayContemporary outcomesMAIN OUTCOMEMedicare feeTrends in Intracranial Stenting Among Medicare Beneficiaries in the United States, 2006–2010
Gupta A, Desai MM, Kim N, Bulsara KR, Wang Y, Krumholz HM. Trends in Intracranial Stenting Among Medicare Beneficiaries in the United States, 2006–2010. Journal Of The American Heart Association 2013, 2: e000084. PMID: 23588099, PMCID: PMC3647283, DOI: 10.1161/jaha.113.000084.Peer-Reviewed Original ResearchConceptsIntracranial stentingMortality rateService beneficiariesICD-9-CM procedure codesPrincipal discharge diagnosis codeOverall hospitalization rateDischarge diagnosis codesHumanitarian Device Exemption approvalAcute care hospitalsHumanitarian Device ExemptionCare hospitalIntracranial angioplastyHospitalization ratesICS useSubarachnoid hemorrhageDiagnosis codesOperative rateProcedure ratesMedicare feeMedicare beneficiariesInsufficient evidenceICS procedureDrug AdministrationCerebral aneurysmsMedicaid Services
2012
Correlations among risk‐standardized mortality rates and among risk‐standardized readmission rates within hospitals
Horwitz LI, Wang Y, Desai MM, Curry LA, Bradley EH, Drye EE, Krumholz HM. Correlations among risk‐standardized mortality rates and among risk‐standardized readmission rates within hospitals. Journal Of Hospital Medicine 2012, 7: 690-696. PMID: 22865546, PMCID: PMC3535010, DOI: 10.1002/jhm.1965.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesAcute myocardial infarctionRisk-standardized readmission ratesReadmission ratesRisk-standardized mortalityHeart failureMortality rateReadmission measuresUS hospitalsMortality measuresCross-sectional studyMortality cohortReadmission cohortHospital outcomesSame hospitalMyocardial infarctionMedicare patientsMedicare feeService beneficiariesTeaching hospital membersHospitalSame quartileHospital membersPneumoniaCohortOutcomes for Mitral Valve Surgery Among Medicare Fee-for-Service Beneficiaries, 1999 to 2008
Dodson JA, Wang Y, Desai MM, Barreto-Filho JA, Sugeng L, Hashim SW, Krumholz HM. Outcomes for Mitral Valve Surgery Among Medicare Fee-for-Service Beneficiaries, 1999 to 2008. Circulation Cardiovascular Quality And Outcomes 2012, 5: 298-307. PMID: 22576847, PMCID: PMC3400109, DOI: 10.1161/circoutcomes.112.966077.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overChi-Square DistributionFee-for-Service PlansFemaleHealthcare DisparitiesHeart Valve DiseasesHeart Valve Prosthesis ImplantationHospital MortalityHospitalizationHumansLinear ModelsMaleMedicareMitral ValveOdds RatioPatient ReadmissionQuality ImprovementRisk AssessmentRisk FactorsTime FactorsTreatment OutcomeUnited StatesConceptsMitral valve surgeryValve surgeryMitral valve repairFFS patientsHospitalization ratesValve repairMedicare feeMedicare Standard Analytic FilesMedicare FFS patientsRisk-standardized ratesProportion of patientsStandard Analytic FilesVital Status filesNational surveillance dataMedicare administrative dataSubstantial morbidityMortality outcomesService patientsAnalytic FilesMortality riskMortality rateSurgeryPatientsDenominator fileReadmission