2022
Clinical implications of Type 2 diabetes on outcomes after cardiac transplantation
Chouairi F, Mullan C, Ahmed A, Bhinder J, Guha A, Miller P, Jastreboff A, Fuery M, Chiravuri M, Geirsson A, Desai N, Maulion C, Sen S, Ahmad T, Anwer M. Clinical implications of Type 2 diabetes on outcomes after cardiac transplantation. PLOS ONE 2022, 17: e0273111. PMID: 36516178, PMCID: PMC9750001, DOI: 10.1371/journal.pone.0273111.Peer-Reviewed Original ResearchMeSH KeywordsDiabetes Mellitus, Type 2FemaleHeart FailureHeart TransplantationHumansMaleProportional Hazards ModelsRetrospective StudiesWaiting ListsConceptsPost-transplant mortalityType 2 diabetesAllocation system changeOld allocation systemsHeart transplant recipientsOutcomes of patientsOrgan Sharing databaseProportion of patientsHeart transplantation outcomesLower likelihoodLikelihood of transplantationHigher likelihoodNew allocation systemCardiac transplantationHeart transplantationTransplant recipientsT2D patientsHeart failureSharing databaseCox regressionTransplantation outcomesUnited NetworkWorse outcomesT2DPatientsThirty-Day and 90-Day Episode of Care Spending Following Heart Failure Hospitalization Among Medicare Beneficiaries
Reinhardt SW, Clark KAA, Xin X, Parzynski CS, Riello R, Sarocco P, Ahmad T, Desai NR. Thirty-Day and 90-Day Episode of Care Spending Following Heart Failure Hospitalization Among Medicare Beneficiaries. Circulation Cardiovascular Quality And Outcomes 2022, 15: e008069. PMID: 35861780, DOI: 10.1161/circoutcomes.121.008069.Peer-Reviewed Original ResearchMeSH KeywordsAgedEpisode of CareHeart FailureHospitalizationHumansMedicareRenal Insufficiency, ChronicRetrospective StudiesUnited StatesConceptsHypertensive heart diseaseIndex hospitalizationMedicare beneficiariesPost-acute care spendingService administrative claims dataMedicare Bundled PaymentsHeart failure admissionsHeart failure hospitalizationPrimary discharge diagnosisChronic kidney diseaseAdministrative claims dataCare spendingPostacute care spendingSkilled nursing facilitiesCare Improvement ProgramDrivers of costDiastolic HFHF careHF hospitalizationSystolic HFFailure hospitalizationDischarge diagnosisKidney diseaseObservation staysPostacute care
2021
Trends and Outcomes of Cardiac Transplantation in the Lowest Urgency Candidates
Fuery MA, Chouairi F, Natov P, Bhinder J, Rose Chiravuri M, Wilson L, Clark KA, Reinhardt SW, Mullan C, Miller PE, Davis RP, Rogers JG, Patel CB, Sen S, Geirsson A, Anwer M, Desai N, Ahmad T. Trends and Outcomes of Cardiac Transplantation in the Lowest Urgency Candidates. Journal Of The American Heart Association 2021, 10: e023662. PMID: 34743559, PMCID: PMC9075266, DOI: 10.1161/jaha.121.023662.Peer-Reviewed Original ResearchMeSH KeywordsDatabases, FactualFemaleHeart TransplantationHumansMaleRetrospective StudiesSurvival AnalysisTissue DonorsTreatment OutcomeWaiting ListsConceptsLow-urgency patientsHigh-urgency patientsUrgency patientsCardiac transplantationAllocation system changeLonger waitlist timesOrgan Sharing databaseTime of transplantationCardiac transplantation candidatesNew allocation systemBaseline recipientPosttransplantation outcomesPosttransplantation survivalAdditional comorbiditiesClinical characteristicsConclusions PatientsHepatitis CIschemic timeTransplantation candidatesSharing databaseWaitlist timeWaitlist survivalUnited NetworkRetrospective analysisPatientsBrief report: Cannabis and opioid use disorder among heart failure admissions, 2008–2018
Chouairi F, Mullan CW, Ravindra N, Clark KAA, Jaffe EM, Bhinder J, Fuery M, Guha A, Ahmad T, Desai NR. Brief report: Cannabis and opioid use disorder among heart failure admissions, 2008–2018. PLOS ONE 2021, 16: e0255514. PMID: 34591847, PMCID: PMC8483306, DOI: 10.1371/journal.pone.0255514.Peer-Reviewed Original ResearchTrends in transcatheter and surgical aortic valve replacement in the United States, 2008-2018
Clark KA, Chouairi F, Kay B, Reinhardt SW, Miller PE, Fuery M, Mullan CW, Guha A, Ahmad T, Desai NR. Trends in transcatheter and surgical aortic valve replacement in the United States, 2008-2018. American Heart Journal 2021, 243: 87-91. PMID: 34571040, DOI: 10.1016/j.ahj.2021.03.017.Peer-Reviewed Original ResearchCannabis use disorder among atrial fibrillation admissions, 2008–2018
Chouairi F, Miller PE, Guha A, Clarke J, Reinhardt SW, Ahmad T, Freeman JV, Desai NR, Friedman DJ. Cannabis use disorder among atrial fibrillation admissions, 2008–2018. Pacing And Clinical Electrophysiology 2021, 44: 1934-1938. PMID: 34506639, DOI: 10.1111/pace.14356.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAtrial FibrillationCross-Sectional StudiesFemaleHospitalizationHumansMaleMarijuana AbuseMiddle AgedRetrospective StudiesUnited StatesConceptsAtrial fibrillation hospitalizationsAF hospitalizationsImpact of CUDNational Inpatient SampleProportion of admissionsDiseases diagnosis codesPrevalence of cannabisHistory of CUDHospital dischargeYounger patientsHigher proportionUnderserved patientsBlack raceDiagnosis codesInpatient SampleInternational ClassificationHospitalizationLegality of cannabisCannabis usePatientsAdmissionCodiagnosisLittle dataCUDCannabisMechanical ventilation at the time of heart transplantation and associations with clinical outcomes
Miller PE, Mullan CW, Chouairi F, Sen S, Clark KA, Reinhardt S, Fuery M, Anwer M, Geirsson A, Formica R, Rogers JG, Desai NR, Ahmad T. Mechanical ventilation at the time of heart transplantation and associations with clinical outcomes. European Heart Journal Acute Cardiovascular Care 2021, 10: 843-851. PMID: 34389855, PMCID: PMC8557439, DOI: 10.1093/ehjacc/zuab063.Peer-Reviewed Original ResearchMeSH KeywordsAdultDatabases, FactualHeart TransplantationHumansLogistic ModelsOdds RatioRespiration, ArtificialRetrospective StudiesConceptsHeart transplantationMechanical ventilationSingle-organ heart transplantationMedian waitlist timeOrgan Sharing databaseTime of transplantationMultivariable logistic regressionMultivariable adjustmentWaitlist timeClinical outcomesSharing databasePoor outcomeVentilated patientsUnited NetworkTemporary mechanical supportClinical acuityTransplantationPatientsPrevious dialysisLogistic regressionMortalityStrong associationReasonable outcomesOutcomesAssociationComparison of Transcatheter and Open Mitral Valve Repair Among Patients With Mitral Regurgitation
Kay B, Chouairi F, Clark KAA, Reinhardt SW, Fuery M, Guha A, Ahmad T, Kaple RK, Desai NR. Comparison of Transcatheter and Open Mitral Valve Repair Among Patients With Mitral Regurgitation. Mayo Clinic Proceedings 2021, 96: 1522-1529. PMID: 34088415, DOI: 10.1016/j.mayocp.2021.01.029.Peer-Reviewed Original ResearchConceptsMitral valve repairMitral regurgitationValve repairInternational ClassificationPatient underwent mitral valve repairOpen mitral valve repairUnderwent mitral valve repairTranscatheter mitral valve repairStudy periodComparison of transcatheterProhibitive surgical riskTenth Revision codesTotal hospital chargesDegenerative mitral regurgitationNational Inpatient SampleLength of stayTranscatheter mitral valve repair deviceDischarge homeHospital mortalityDischarge dispositionPatient comorbiditiesSurgical riskHospital chargesMedian lengthNinth RevisionNational Trends in the Burden of Atrial Fibrillation During Hospital Admissions for Heart Failure
Reinhardt SW, Chouairi F, Miller PE, Clark KAA, Kay B, Fuery M, Guha A, Freeman JV, Ahmad T, Desai NR, Friedman DJ. National Trends in the Burden of Atrial Fibrillation During Hospital Admissions for Heart Failure. Journal Of The American Heart Association 2021, 10: e019412. PMID: 34013736, PMCID: PMC8483517, DOI: 10.1161/jaha.120.019412.Peer-Reviewed Original ResearchConceptsReduced ejection fractionComorbid atrial fibrillationHeart failureAtrial fibrillationEjection fractionHospital mortalityHF hospitalizationBackground Heart failureConclusion Atrial fibrillationWhite individualsNational Inpatient SampleMedian hospital chargesMore comorbiditiesComorbid hypertensionHF admissionsHF outcomesPatient demographicsDiabetes mellitusHospital admissionHospital chargesInpatient SampleVascular diseaseHospitalizationPatientsMortalityDifferences in NT‐proBNP Response and Prognosis in Men and Women With Heart Failure With Reduced Ejection Fraction
Daubert MA, Yow E, Barnhart HX, Piña IL, Ahmad T, Leifer E, Cooper L, Desvigne‐Nickens P, Fiuzat M, Adams K, Ezekowitz J, Whellan DJ, Januzzi JL, O’Connor C, Felker GM. Differences in NT‐proBNP Response and Prognosis in Men and Women With Heart Failure With Reduced Ejection Fraction. Journal Of The American Heart Association 2021, 10: e019712. PMID: 33955231, PMCID: PMC8200692, DOI: 10.1161/jaha.120.019712.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic beta-AntagonistsAngiotensin Receptor AntagonistsAngiotensin-Converting Enzyme InhibitorsBiomarkersCanadaCause of DeathFemaleFollow-Up StudiesGuideline AdherenceHeart FailureHumansMaleMiddle AgedNatriuretic Peptide, BrainPeptide FragmentsPrognosisProtein PrecursorsRetrospective StudiesSex DistributionSex FactorsStroke VolumeUnited StatesConceptsReduced ejection fractionNT-proBNP responseGuideline-directed medical therapyGUIDE-IT trialHeart failureEjection fractionNT-proBNPPrognostic valuePg/mLHF hospitalizationMedical therapyEquivalent prognostic valueNT-proBNP reductionNT-proBNP valuesGreater prognostic valueNonischemic causesClinical characteristicsClinical outcomesImproved outcomesLandmark analysisPrognostic biomarkerTherapeutic goalsConclusions MenSecondary analysisWomenElectronic health record risk score provides earlier prognostication of clinical outcomes in patients admitted to the cardiac intensive care unit
Kunitomo Y, Thomas A, Chouairi F, Canavan ME, Kochar A, Khera R, Katz JN, Murphy C, Jentzer J, Ahmad T, Desai NR, Brennan J, Miller PE. Electronic health record risk score provides earlier prognostication of clinical outcomes in patients admitted to the cardiac intensive care unit. American Heart Journal 2021, 238: 85-88. PMID: 33891906, DOI: 10.1016/j.ahj.2021.04.004.Peer-Reviewed Original ResearchConceptsCardiac intensive care unitIntensive care unitRothman IndexCare unitRisk scoreModern cardiac intensive care unitSequential Organ Failure Assessment scoreOrgan Failure Assessment scoreElectronic health recordsCICU mortalityCICU patientsSOFA scoreCICU admissionClinical outcomesEarly prognosticationObservational studyPrognostic abilityAssessment scoresOutcome predictionHealth recordsGood calibrationSuperior discriminationPatientsAdmissionScoresTrends in 30- and 90-Day Readmission Rates for Heart Failure
Khan MS, Sreenivasan J, Lateef N, Abougergi MS, Greene SJ, Ahmad T, Anker SD, Fonarow GC, Butler J. Trends in 30- and 90-Day Readmission Rates for Heart Failure. Circulation Heart Failure 2021, 14: e008335. PMID: 33866827, DOI: 10.1161/circheartfailure.121.008335.Peer-Reviewed Original ResearchMeSH KeywordsAgedFemaleHeart FailureHumansMaleMedicarePatient ReadmissionQuality of Health CareRetrospective StudiesUnited StatesConceptsHospital Readmissions Reduction ProgramHF readmission ratesIndex HF hospitalizationLow-volume hospitalsReadmission ratesHF hospitalizationPayer sourceHeart failure outcomesNational Readmission DatabaseReadmissions Reduction ProgramNon-Medicare insuranceCause 30Cause readmissionEjection fractionHeart failureSubgroup analysisReadmissionLinear regression analysisPrimary analysisSecondary analysisHospitalizationFailure outcomesHF volumeLimited dataRegression analysisChanges in Use of Left Ventricular Assist Devices as Bridge to Transplantation With New Heart Allocation Policy
Mullan CW, Chouairi F, Sen S, Mori M, Clark KAA, Reinhardt SW, Miller PE, Fuery MA, Jacoby D, Maulion C, Anwer M, Geirsson A, Mulligan D, Formica R, Rogers JG, Desai NR, Ahmad T. Changes in Use of Left Ventricular Assist Devices as Bridge to Transplantation With New Heart Allocation Policy. JACC Heart Failure 2021, 9: 420-429. PMID: 33714748, DOI: 10.1016/j.jchf.2021.01.010.Peer-Reviewed Original ResearchMeSH KeywordsAdultHeart FailureHeart TransplantationHeart-Assist DevicesHumansPolicyRetrospective StudiesTissue DonorsTreatment OutcomeUnited StatesWaiting ListsConceptsDonor heart allocation systemNumber of patientsHeart allocation systemVentricular assist deviceWaitlist survivalAssist deviceNew heart allocation policyLeft ventricular assist deviceAllocation system changePost-transplant mortalityOrgan Sharing databaseOutcomes of patientsPost-transplantation outcomesProportion of patientsTime of transplantContinuous-flow LVADPost-transplantation survivalHeart allocation policyNew allocation systemBaseline recipientStatus 1AHeart transplantationIschemic timeLVAD implantationTransplant listTransition From an Open to Closed Staffing Model in the Cardiac Intensive Care Unit Improves Clinical Outcomes
Miller PE, Chouairi F, Thomas A, Kunitomo Y, Aslam F, Canavan ME, Murphy C, Daggula K, Metkus T, Vallabhajosyula S, Carnicelli A, Katz JN, Desai NR, Ahmad T, Velazquez EJ, Brennan J. Transition From an Open to Closed Staffing Model in the Cardiac Intensive Care Unit Improves Clinical Outcomes. Journal Of The American Heart Association 2021, 10: e018182. PMID: 33412899, PMCID: PMC7955420, DOI: 10.1161/jaha.120.018182.Peer-Reviewed Original ResearchConceptsCardiac intensive care unitIntensive care unitHospital mortalityCare unitCICU mortalityClinical outcomesModern cardiac intensive care unitSurgical intensive care unitTotal hospital chargesSeverity of illnessMultivariable logistic regressionCICU lengthMultivariable adjustmentRespiratory insufficiencyPrimary outcomeUnique admissionsHospital chargesCardiac arrestSubgroup analysisImproved outcomesMortalityLogistic regressionAdmissionClosed unitStaffing models
2020
Clinical implications of differences between real world and clinical trial usage of left ventricular assist devices for end stage heart failure
Mezzacappa C, Ravindra NG, Caraballo C, Chouairi F, Miller PE, Clarke JD, Gruen J, Mori M, McCullough M, Mullan C, Geirsson A, Rogers JG, Anwer M, Desai N, Ahmad T. Clinical implications of differences between real world and clinical trial usage of left ventricular assist devices for end stage heart failure. PLOS ONE 2020, 15: e0242928. PMID: 33270648, PMCID: PMC7714148, DOI: 10.1371/journal.pone.0242928.Peer-Reviewed Original ResearchConceptsClinical trialsVentricular assist deviceExclusion criteriaLVAD recipientsAssist deviceReal-world settingClinical implicationsClinical trial exclusion criteriaHeart failure clinical trialsEnd-stage renal diseaseEnd-stage heart failureReal-world registryRetrospective cohort studyLandmark clinical trialsStage renal diseaseTrial exclusion criteriaRisk of deathStage heart failureRespiratory failureCohort studyPatient characteristicsHeart failurePatient factorsRenal diseaseClinical outcomesCOVID-19 infections and outcomes in a live registry of heart failure patients across an integrated health care system
Caraballo C, McCullough M, Fuery MA, Chouairi F, Keating C, Ravindra NG, Miller PE, Malinis M, Kashyap N, Hsiao A, Wilson FP, Curtis JP, Grant M, Velazquez EJ, Desai NR, Ahmad T. COVID-19 infections and outcomes in a live registry of heart failure patients across an integrated health care system. PLOS ONE 2020, 15: e0238829. PMID: 32997657, PMCID: PMC7526909, DOI: 10.1371/journal.pone.0238829.Peer-Reviewed Original ResearchConceptsHeart failure patientsIntegrated health care systemHeart Failure RegistryHealth care systemFailure patientsCOVID-19 infectionCare systemCOVID-19SARS-CoV-2 infectionReal-time registryRenin-angiotensin blockersRetrospective chart reviewCoronary artery diseaseRisk of deathCOVID-19 testingAngiotensin blockersMultiple comorbiditiesRespiratory failureChart reviewSymptomatic patientsArtery diseaseHeart failureComorbid conditionsPatient mortalityClinical managementComparison of Mortality and Readmission in Non-Ischemic Versus Ischemic Cardiomyopathy After Implantable Cardioverter-Defibrillator Implantation
Higgins AY, Bjerre J, Parzynski CS, Minges KE, Ahmad T, Desai NR, Enriquez A, Spatz ES, Friedman DJ, Curtis JP, Hlatky MA, Freeman JV. Comparison of Mortality and Readmission in Non-Ischemic Versus Ischemic Cardiomyopathy After Implantable Cardioverter-Defibrillator Implantation. The American Journal Of Cardiology 2020, 133: 116-125. PMID: 32862971, DOI: 10.1016/j.amjcard.2020.07.035.Peer-Reviewed Original ResearchConceptsNon-ischemic cardiomyopathyImplantable cardioverter defibrillator implantationCardioverter-defibrillator implantationICM patientsIschemic cardiomyopathyNational Cardiovascular Data Registry ICD RegistryCox proportional hazards regression modelPrimary prevention ICD implantationLeft ventricular ejection fractionProportional hazards regression modelsPrimary prevention ICDsRetrospective cohort studyVentricular ejection fractionKaplan-Meier curvesHazards regression modelsRisk of mortalityComparison of mortalityMedian followCohort studyICD implantationEjection fractionHeart failureHospital readmissionICD RegistryPatient subgroups
2015
Cardiac dysfunction associated with a nucleotide polymerase inhibitor for treatment of hepatitis C
Ahmad T, Yin P, Saffitz J, Pockros PJ, Lalezari J, Shiffman M, Freilich B, Zamparo J, Brown K, Dimitrova D, Kumar M, Manion D, Heath-Chiozzi M, Wolf R, Hughes E, Muir AJ, Hernandez AF. Cardiac dysfunction associated with a nucleotide polymerase inhibitor for treatment of hepatitis C. Hepatology 2015, 62: 409-416. PMID: 25251156, DOI: 10.1002/hep.27488.Peer-Reviewed Original ResearchConceptsNucleotide polymerase inhibitorLVEF dysfunctionPolymerase inhibitorsB-type natriuretic peptide levelsChronic hepatitis C virus (HCV) infectionHepatitis C virus infectionActing antiviral (DAA) agentsSevere myocyte damageC virus infectionNatriuretic peptide levelsPhase II studyVentricular ejection fractionT-wave inversionOff-target toxicityHCV treatmentHepatitis CII studySystolic functionTransthoracic echocardiogramEjection fractionNew DAAsCardiac dysfunctionElectrocardiogram changesPathological findingsCardiac toxicity