2021
Bariatric-Metabolic Surgery Utilisation in Patients With and Without Diabetes: Data from the IFSO Global Registry 2015–2018
Welbourn R, Hollyman M, Kinsman R, Dixon J, Cohen R, Morton J, Ghaferi A, Higa K, Ottosson J, Pattou F, Al-Sabah S, Anvari M, Himpens J, Liem R, Våge V, Walton P, Brown W, Kow L. Bariatric-Metabolic Surgery Utilisation in Patients With and Without Diabetes: Data from the IFSO Global Registry 2015–2018. Obesity Surgery 2021, 31: 2391-2400. PMID: 33638756, PMCID: PMC8113173, DOI: 10.1007/s11695-021-05280-6.Peer-Reviewed Original ResearchConceptsBody mass indexType 2 diabetes mellitusMethodsCross-sectional analysisRates of T2DMBariatric-metabolic surgeryHigh rateGastric bypassPrimary surgerySleeve gastrectomyDiabetes mellitusMass indexGlobal RegistryBaseline ageNational registryInclusion criteriaT2DMType of operationPatientsOlder menWomenSurgeryRegistryMenHigher proportionCommon operation
2020
Results of COVID-minimal Surgical Pathway During Surge-phase of COVID-19 Pandemic
Boffa DJ, Judson BL, Billingsley KG, Del Rossi E, Hindinger K, Walters S, Ermer T, Ratner E, Mitchell MR, Laurans MS, Johnson DC, Yoo PS, Morton JM, Zurich HB, Davis K, Ahuja N. Results of COVID-minimal Surgical Pathway During Surge-phase of COVID-19 Pandemic. Annals Of Surgery 2020, 272: e316-e320. PMID: 33086321, PMCID: PMC7668334, DOI: 10.1097/sla.0000000000004455.Peer-Reviewed Original ResearchConceptsHospital-acquired COVID-19 infectionCOVID-19 infectionSurgical pathwayCOVID-19 hospital admissionsCOVID-19 pandemicCommon surgical indicationsUrgent cancer treatmentOutcomes of patientsCOVID-19 patientsCOVID-19 testingCOVID-19 positive peoplePathway patientsPostoperative periodTimely surgeryHospital admissionMedian ageSurgical indicationsUrgent operationMedian lengthCancer patientsGenitourinary tractEmergency roomBACKGROUND DATASurgical proceduresPatient statusEffect of JumpstartMD, a Commercial Low‐Calorie Low‐Carbohydrate Physician‐Supervised Weight Loss Program, on 22,407 Adults
Bourke S, Morton JM, Williams P. Effect of JumpstartMD, a Commercial Low‐Calorie Low‐Carbohydrate Physician‐Supervised Weight Loss Program, on 22,407 Adults. Journal Of Obesity 2020, 2020: 8026016. PMID: 32318289, PMCID: PMC7157789, DOI: 10.1155/2020/8026016.Peer-Reviewed Original ResearchConceptsWeight loss programGreater weight lossWeight lossLoss programWeekly appointmentsCommercial weight loss programEffective weight lossPharmacologic treatmentLow carbohydrate foodsMeal replacementReplacement dietLast observationCompletersMajor determinantWomenDietLonger enrollmentAppointmentsPatientsCoach meetingsMonths
2019
Assessment of obesity prevalence and validity of obesity diagnoses coded in claims data for selected surgical populations
Ammann EM, Kalsekar I, Yoo A, Scamuffa R, Hsiao CW, Stokes AC, Morton JM, Johnston SS. Assessment of obesity prevalence and validity of obesity diagnoses coded in claims data for selected surgical populations. Medicine 2019, 98: e16438. PMID: 31335698, PMCID: PMC6709187, DOI: 10.1097/md.0000000000016438.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedArthroplasty, Replacement, KneeBariatric SurgeryBody Mass IndexCatheter AblationClinical CodingElectronic Health RecordsFemaleHerniorrhaphyHumansMaleMiddle AgedObesityOutcome Assessment, Health CarePatient SelectionPrevalencePrognosisReproducibility of ResultsRetrospective StudiesUnited StatesConceptsBody mass indexPositive predictive valueBariatric surgeryDiagnosis codesElectronic health recordsSurgical populationClaims dataHernia repairObesity diagnosisPrognostic factorsSurgical outcomesInterpretation of studiesCardiac ablationPatient body mass indexMeasured body mass indexHigh positive predictive valueImportant prognostic factorType of surgeryAdministrative healthcare dataAdministrative claims dataFalse positive patientsPatient ageMass indexPatient selectionIndex procedureAssociation of Laparoscopic Gastric Bypass Surgery With Telomere Length in Patients With Obesity
Morton JM, Garg T, Leva N. Association of Laparoscopic Gastric Bypass Surgery With Telomere Length in Patients With Obesity. JAMA Surgery 2019, 154: 266-268. PMID: 30566188, PMCID: PMC6439632, DOI: 10.1001/jamasurg.2018.4830.Peer-Reviewed Original ResearchThe Impact of Ethnicity on Metabolic Outcomes after Bariatric Surgery
Valencia A, Garcia LC, Morton J. The Impact of Ethnicity on Metabolic Outcomes after Bariatric Surgery. Journal Of Surgical Research 2019, 236: 345-351. PMID: 30694776, DOI: 10.1016/j.jss.2018.09.061.Peer-Reviewed Original ResearchConceptsBody mass indexBariatric surgeryMetabolic outcomesDiabetic outcomesOral medicationsBlack patientsMass indexAsian patientsLaparoscopic sleeve gastrectomy procedureType II diabetes mellitusSignificant metabolic improvementSimilar metabolic outcomesSleeve gastrectomy procedureMajority of patientsAsian patient populationSingle academic institutionEthnic minority patientsNon-Hispanic whitesDiabetes remissionDiabetes resolutionGastric bypassLaparoscopic RouxPostoperative visitDiabetes mellitusMetabolic improvement
2018
Association of Bariatric Surgery and National Medication Use
Morton JM, Ponce J, Malangone-Monaco E, Nguyen N. Association of Bariatric Surgery and National Medication Use. Journal Of The American College Of Surgeons 2018, 228: 171-179. PMID: 30453056, DOI: 10.1016/j.jamcollsurg.2018.10.021.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overBariatric SurgeryCardiovascular AgentsDrug UtilizationFemaleHealth Care CostsHumansHypoglycemic AgentsLongitudinal StudiesMaleMatched-Pair AnalysisMiddle AgedObesity, MorbidPostoperative PeriodPropensity ScoreRetrospective StudiesUnited StatesYoung AdultConceptsNonsurgical control patientsBariatric surgical patientsControl patientsSurgical patientsMedication useControl groupSurgical groupPharmacy costsPropensity-matched control groupTruven Health Analytics MarketScan Commercial ClaimsBariatric surgical proceduresMarketScan Commercial ClaimsTotal pharmacy costsLower pharmacy costsNonsurgical control groupEnduring treatmentGastric bypassIndex dateBariatric surgeryObese patientsPostoperative periodSevere obesitySurgical cohortBariatric operationsEncounters DatabaseChanges in Cerebral Cortical Thickness Related to Weight Loss Following Bariatric Surgery
Bohon C, Garcia LC, Morton JM. Changes in Cerebral Cortical Thickness Related to Weight Loss Following Bariatric Surgery. Obesity Surgery 2018, 28: 2578-2582. PMID: 29876838, PMCID: PMC6400222, DOI: 10.1007/s11695-018-3317-6.Peer-Reviewed Original ResearchConceptsCerebral cortical thicknessCortical thicknessBariatric surgeryWeight Loss Following Bariatric SurgeryGreater excess weight lossExcess weight lossCortical gray matterMagnetic resonance imaging dataBrain changesPatientsGray matterSurgeryWeight lossPreliminary evidenceNeurocognitive measuresFurther investigationMemory recallImaging dataPrevious studiesObesityGlobal measuresLarge sampleMonths
2017
Obesity in America
Rosenthal RJ, Morton J, Brethauer S, Mattar S, De Maria E, Benz JK, Titus J, Sterrett D. Obesity in America. Surgery For Obesity And Related Diseases 2017, 13: 1643-1650. PMID: 28935198, DOI: 10.1016/j.soard.2017.08.002.Peer-Reviewed Original ResearchConceptsPrevalence of obesityDisease of obesityBest treatment modalityTreatment of obesityUS household populationConsequences of obesityGeneral US populationSerious health problemHIV infectionExcess weightObesity treatmentTreatment modalitiesTreatment optionsUniversity HospitalHeart diseaseObese AmericansEarly deathObesityHealth problemsUS populationMental illnessDiseaseWeight lossProbability-based panelOversamples of blacks
2016
Geographic variation in surgical outcomes and cost between the United States and Japan.
Hurley MP, Schoemaker L, Morton JM, Wren SM, Vogt WB, Watanabe S, Yoshikawa A, Bhattacharya J. Geographic variation in surgical outcomes and cost between the United States and Japan. The American Journal Of Managed Care 2016, 22: 600-7. PMID: 27662222.Peer-Reviewed Original ResearchThe Impact of Different Surgical Techniques on Outcomes in Laparoscopic Sleeve Gastrectomies
Berger ER, Clements RH, Morton JM, Huffman KM, Wolfe BM, Nguyen NT, Ko CY, Hutter MM. The Impact of Different Surgical Techniques on Outcomes in Laparoscopic Sleeve Gastrectomies. Annals Of Surgery 2016, 264: 464-473. PMID: 27433904, DOI: 10.1097/sla.0000000000001851.Peer-Reviewed Original ResearchConceptsLaparoscopic sleeve gastrectomyStaple line reinforcementBougie sizeSurgical techniqueSleeve gastrectomyWeight lossSurgeon levelMBSAQIP data registryLow morbidity rateGood surgical techniqueDifferent surgical techniquesPercent of surgeonsLeak rateLogistical regression modelLSG operationsMorbidity rateClinical effectivenessSafe procedurePatient levelStaple lineHigher leak rateData registryLine reinforcementSurgeonsGastrectomy
2014
T-Cell Profile in Adipose Tissue Is Associated With Insulin Resistance and Systemic Inflammation in Humans
McLaughlin T, Liu LF, Lamendola C, Shen L, Morton J, Rivas H, Winer D, Tolentino L, Choi O, Zhang H, Hui Yen Chng M, Engleman E. T-Cell Profile in Adipose Tissue Is Associated With Insulin Resistance and Systemic Inflammation in Humans. Arteriosclerosis Thrombosis And Vascular Biology 2014, 34: 2637-2643. PMID: 25341798, PMCID: PMC4445971, DOI: 10.1161/atvbaha.114.304636.Peer-Reviewed Original ResearchConceptsCD8 T cellsSubcutaneous adipose tissueT cell profileInsulin resistanceT cellsAdipose tissueSystemic inflammationPeripheral bloodPlasma high-sensitivity C-reactive protein concentrationsHigh-sensitivity C-reactive protein concentrationsAnti-inflammatory T cellsAnti-inflammatory interleukin-10C-reactive protein concentrationsDiet-induced obese miceObesity-associated metabolic diseasesInsulin-mediated glucose disposalProinflammatory T helperPlasma interleukin-6T cell subsetsInsulin suppression testT-cell phenotypeSystemic insulin resistanceAdipose tissue biopsiesObese human subjectsReal-time polymerase chain reactionDoes Hospital Accreditation Impact Bariatric Surgery Safety?
Morton JM, Garg T, Nguyen N. Does Hospital Accreditation Impact Bariatric Surgery Safety? Annals Of Surgery 2014, 260: 504-509. PMID: 25115426, DOI: 10.1097/sla.0000000000000891.Peer-Reviewed Original ResearchConceptsLength of stayBariatric surgery outcomesNationwide Inpatient SampleBariatric surgerySurgery outcomesHigher mean LOSMean LOSShorter LOSHospital accreditationMultivariable logistic regression analysisHospital accreditation statusNinth Revision codesLogistic regression analysisLower total chargesBariatric centerRevision codesPatient dischargeAccredited centersInpatient SampleUnique hospitalsAmerican CollegeICD9 codesInternational ClassificationSurgery safetyHospitalIs Ambulatory Laparoscopic Roux-En-Y Gastric Bypass Associated With Higher Adverse Events?
Morton JM, Winegar D, Blackstone R, Wolfe B. Is Ambulatory Laparoscopic Roux-En-Y Gastric Bypass Associated With Higher Adverse Events? Annals Of Surgery 2014, 259: 286-292. PMID: 24169190, DOI: 10.1097/sla.0000000000000227.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAmbulatory Surgical ProceduresDatabases, FactualFemaleGastric BypassHumansLaparoscopyLength of StayLogistic ModelsLongitudinal StudiesMaleMiddle AgedMultivariate AnalysisObesity, MorbidOdds RatioPatient ReadmissionPostoperative ComplicationsTreatment OutcomeYoung AdultConceptsBody mass indexSerious complicationsGastric bypassMass indexMedian body mass indexLaparoscopic gastric bypass procedureHigher adverse eventsLaparoscopic Roux-EnY Gastric BypassGastric bypass proceduresLogistic regression analysisDistribution of LOSLogistic regression modelsLRYGB patientsLaparoscopic RouxRoux-enMedian LOSAdverse eventsMedian agePatient demographicsReadmission ratesBypass proceduresInsurance statusComplicationsClinical database
2013
Does Chronic Kidney Disease Affect Outcomes after Major Abdominal Surgery? Results from the National Surgical Quality Improvement Program
Cloyd JM, Ma Y, Morton JM, Tamura M, Poultsides GA, Visser BC. Does Chronic Kidney Disease Affect Outcomes after Major Abdominal Surgery? Results from the National Surgical Quality Improvement Program. Journal Of Gastrointestinal Surgery 2013, 18: 605-612. PMID: 24241964, DOI: 10.1007/s11605-013-2390-3.Peer-Reviewed Original ResearchConceptsChronic kidney diseaseMajor abdominal surgeryGlomerular filtration rateAbdominal surgeryPostoperative mortalityKidney functionNational Surgical Quality Improvement ProgramNormal preoperative kidney functionEnd-stage renal diseaseSurgical Quality Improvement ProgramComplex abdominal surgeryMild asymptomatic diseaseNon-dialysis patientsPreoperative kidney functionPreoperative renal insufficiencyThirty-day morbidityOverall complication rateRate of pneumoniaThirty-day mortalityMajor abdominal operationsQuality Improvement ProgramKidney impairmentPostoperative complicationsPostoperative morbidityRenal insufficiency
2012
Hospital readmission after a pancreaticoduodenectomy: an emerging quality metric?
Kastenberg ZJ, Morton JM, Visser BC, Norton JA, Poultsides GA. Hospital readmission after a pancreaticoduodenectomy: an emerging quality metric? Hepato Pancreato Biliary 2012, 15: 142-148. PMID: 23297725, PMCID: PMC3719921, DOI: 10.1111/j.1477-2574.2012.00563.x.Peer-Reviewed Original ResearchMeSH KeywordsAbdominal AbscessAgedCaliforniaCohort StudiesFemaleFollow-Up StudiesHospital MortalityHospitals, UniversityHumansIncidenceLength of StayMaleMiddle AgedPancreatic DiseasesPancreatic FistulaPancreaticoduodenectomyPatient DischargePatient ReadmissionRetrospective StudiesRisk FactorsSurgical Wound InfectionSurvival RateTreatment OutcomeConceptsHospital readmissionPatterns of rehospitalizationSuperficial wound infectionDays of dischargePost-operative complicationsLength of stayNursing/rehabilitation facilityAcademic medical centerHealth care servicesDiet intoleranceFistula/Consecutive patientsWound infectionOutpatient settingDiagnostic evaluationPancreaticoduodenectomyBenign diagnosisMedical CenterReadmissionCommon reasonRehabilitation facilityCare servicesPatientsMeasures of qualityOne-fifthDeterminants of Adverse Events in Vascular Surgery
Hernandez-Boussard T, McDonald KM, Morton JM, Dalman RL, Bech FR. Determinants of Adverse Events in Vascular Surgery. Journal Of The American College Of Surgeons 2012, 214: 788-797. PMID: 22425449, PMCID: PMC4890555, DOI: 10.1016/j.jamcollsurg.2012.01.045.Peer-Reviewed Original ResearchConceptsPatient safety indicatorsAbdominal aortic aneurysm repairAortic aneurysm repairPotential adverse eventsAdverse eventsRisk-adjusted ratesVascular surgeryAneurysm repairVascular proceduresOpen abdominal aortic aneurysm repairEndovascular abdominal aortic aneurysm repairICD-9-CM codesLow-volume hospitalsPublic payersNationwide Inpatient SamplePatient safety eventsHospital stayNonwhite patientsPatient characteristicsPain patientsVascular patientsCarotid endarterectomyLower risk-adjusted rateOverall high rateProcedure indication
2011
Relationship between Patient Safety and Hospital Surgical Volume
Hernandez‐Boussard T, Downey JR, McDonald K, Morton JM. Relationship between Patient Safety and Hospital Surgical Volume. Health Services Research 2011, 47: 756-769. PMID: 22091561, PMCID: PMC3419887, DOI: 10.1111/j.1475-6773.2011.01310.x.Peer-Reviewed Original ResearchConceptsRisk-adjusted PSI ratesHospital volumePatient safety indicatorsAdverse eventsHospital-acquired adverse eventsCoronary artery bypass graftPSI ratesNationwide Inpatient Sample databaseHospital surgical volumeHospital adverse eventsArtery bypass graftHigh-volume hospitalsLow-volume hospitalsPreventable adverse eventsAbdominal aortic aneurysmCommon surgical procedureQuality health care deliveryHealth care deliveryRisk-adjusted ratesVolume tercilesGastric bypassVolume hospitalsBypass graftAortic aneurysmSurgical volumeShort-term medication cost savings for treating hypertension and diabetes after gastric bypass
Ghiassi S, Morton J, Bellatorre N, Eisenberg D. Short-term medication cost savings for treating hypertension and diabetes after gastric bypass. Surgery For Obesity And Related Diseases 2011, 8: 269-274. PMID: 21723203, DOI: 10.1016/j.soard.2011.05.009.Peer-Reviewed Original ResearchConceptsGastric bypass surgerySubset of patientsCost of medicationsBypass surgeryPersistent hypertensionDiabetic medicationsGastric bypassPalo Alto Veterans Affairs Health Care SystemVeterans Affairs Health Care SystemAnnual medication costsPostoperative medication requirementsRemission of diabetesGastric bypass patientsMedication cost savingsTreatment of hypertensionEconomic healthcare burdenHealth care systemAntihypertensive medicationsComplete remissionDiabetes medicationsMedication requirementsProspective databaseBariatric surgeryBypass patientsAnnual cost
2010
Frequency and Outcomes of Blood Products Transfusion Across Procedures and Clinical Conditions Warranting Inpatient Care: An Analysis of the 2004 Healthcare Cost and Utilization Project Nationwide Inpatient Sample Database
Morton J, Anastassopoulos K, Patel S, Lerner J, Ryan K, Goss T, Dodd S. Frequency and Outcomes of Blood Products Transfusion Across Procedures and Clinical Conditions Warranting Inpatient Care: An Analysis of the 2004 Healthcare Cost and Utilization Project Nationwide Inpatient Sample Database. American Journal Of Medical Quality 2010, 25: 289-296. PMID: 20530223, DOI: 10.1177/1062860610366159.Peer-Reviewed Original ResearchConceptsBlood product transfusionLength of stayNationwide Inpatient Sample databaseProduct transfusionUtilization Project Nationwide Inpatient Sample databaseAverage LOSSample databaseEarly postoperative bleedingRetrospective cohort studyHealth-related qualityOdds of deathTransfusion-related complicationsHospital mortalityPostoperative bleedingTransfusion requirementsPostoperative outcomesCohort studyPostoperative infectionInpatient careProvider awarenessHealthcare costsTransfusionCohortOutcomesOdds