2022
Beyond 5 years: a matched cohort of sleeve gastrectomy versus gastric bypass
Blevins KS, Garcia L, Forrester JD, Morton JM, Azagury DE. Beyond 5 years: a matched cohort of sleeve gastrectomy versus gastric bypass. Surgery For Obesity And Related Diseases 2022, 18: 789-793. PMID: 35484048, DOI: 10.1016/j.soard.2022.03.008.Peer-Reviewed Original ResearchConceptsLaparoscopic sleeve gastrectomyLSG patientsLRYGB patientsBody mass indexBody weight lossWeight lossGastric bypassSleeve gastrectomyMass indexExcess body weight lossPreoperative body mass indexShort-term favorable outcomesTotal body weight lossExcellent short-term outcomesLong-term weight lossCommon bariatric surgeryLong-term followShort-term outcomesLaparoscopic RouxAverage followBariatric surgeryLess weight lossPreoperative differencesPrimary outcomeIntestinal anatomy
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
Correlating actual one-year weight loss with predicted weight loss by the MBSAQIP: bariatric surgical risk/benefit calculator
Zhou R, Ying L, Valle J, Moore J, Nadzam G, Roberts K, Ghiassi S, Morton J, Duffy A. Correlating actual one-year weight loss with predicted weight loss by the MBSAQIP: bariatric surgical risk/benefit calculator. Surgical Endoscopy 2020, 35: 5705-5708. PMID: 32968922, DOI: 10.1007/s00464-020-08030-4.Peer-Reviewed Original ResearchConceptsHigher preoperative BMIBariatric surgeryWeight lossActual weight lossPreoperative BMIOne-year weight lossYale-New Haven HospitalNational databasePatient preoperative informationMethodsA retrospective reviewBody mass indexBackgroundThe American SocietyNew Haven HospitalUnpaired t-testObese patientsPatient factorsRetrospective reviewMass indexPreoperative discussionPreoperative informationBMI pointsBMIPatientsInformed consentSurgery
2019
Anesthetic Considerations
Lemmens H, Morton J, Ku C, Jones S. Anesthetic Considerations. 2019, 89-101. DOI: 10.1007/978-3-030-27021-6_8.Peer-Reviewed Original ResearchAssessment 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 procedurePreoperative weight loss: is waiting longer before bariatric surgery more effective?
Eng V, Garcia L, Khoury H, Morton J, Azagury D. Preoperative weight loss: is waiting longer before bariatric surgery more effective? Surgery For Obesity And Related Diseases 2019, 15: 951-957. PMID: 31104959, DOI: 10.1016/j.soard.2019.03.012.Peer-Reviewed Original ResearchConceptsBody mass indexWeight lossBariatric surgeryMass indexConsultation visitSupervised weight loss programAverage body mass indexPreoperative wait timeSleeve gastrectomy patientsGastric bypass patientsPostoperative weight lossRate of complicationsDelay of treatmentWeight loss programSingle academic institutionInitial consultation visitAdverse surgical eventsSignificant long-term benefitWait timePreoperative percentageGastrectomy patientsGastric bypassLaparoscopic RouxBypass patientsAdverse eventsThe 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
Heterogeneity of weight loss after gastric bypass, sleeve gastrectomy, and adjustable gastric banding
Azagury D, Mokhtari TE, Garcia L, Rosas US, Garg T, Rivas H, Morton J. Heterogeneity of weight loss after gastric bypass, sleeve gastrectomy, and adjustable gastric banding. Surgery 2018, 165: 565-570. PMID: 30316577, DOI: 10.1016/j.surg.2018.08.023.Peer-Reviewed Original ResearchConceptsLaparoscopic adjustable gastric bandingPercent excess weight lossAdjustable gastric bandingExcess weight lossLaparoscopic sleeve gastrectomySuccessful treatment effectGastric bandingLaparoscopic RouxGastric bypassSleeve gastrectomyOdds ratioWeight lossTreatment effectsMean percent excess weight lossLong-term weight lossLaparoscopic adjustable gastricBody mass indexSingle academic institutionSubstantial weight lossAdjustable gastricPostoperative BMIBariatric proceduresObese patientsConsecutive patientsMass index
2017
Buttressing of the EEA stapler during gastrojejunal anastomosis decreases rate of bleeding-related complications for laparoscopic gastric bypass
Ichter ZA, Voeller L, Rivas H, Khoury H, Azagury D, Morton JM. Buttressing of the EEA stapler during gastrojejunal anastomosis decreases rate of bleeding-related complications for laparoscopic gastric bypass. Surgery For Obesity And Related Diseases 2017, 13: 802-806. PMID: 28325504, DOI: 10.1016/j.soard.2017.01.019.Peer-Reviewed Original ResearchConceptsBleeding-related complicationsGastric bypassBariatric surgerySignificant postoperative bleedingPostoperative weight lossLaparoscopic gastric bypassBody mass indexLength of staySingle academic institutionNew surgical techniqueLaparoscopic RouxPostoperative bleedingSleeve gastrectomySevere obesitySurgical characteristicsMass indexEEA staplerRetrospective studyGastrojejunal anastomosisStaple lineSurgical techniqueEffective treatmentComplicationsWeight lossTime points
2016
Influence of Weight Loss Attempts on Bariatric Surgery Outcomes
Deb S, Voller L, Palisch C, Ceja O, Turner W, Rivas H, Morton JM. Influence of Weight Loss Attempts on Bariatric Surgery Outcomes. The American Surgeon 2016, 82: 916-920. PMID: 27779973, DOI: 10.1177/000313481608201012.Peer-Reviewed Original ResearchConceptsBody mass indexWeight loss attemptsPreoperative body mass indexWeight loss outcomesWeight lossLoss outcomesLong-term weight loss outcomesPrior weight loss attemptsNonsurgical weight lossExcess weight lossBariatric surgery patientsBariatric surgery outcomesGraphPad Prism 6Spearman correlation testBariatric proceduresBariatric surgerySurgery patientsMass indexSurgery outcomesClinic assessmentPatient's chanceSignificant negative correlationAverage durationSurgeryMean numberEffect of Vagal Nerve Blockade on Moderate Obesity with an Obesity-Related Comorbid Condition: the ReCharge Study
Morton JM, Shah SN, Wolfe BM, Apovian CM, Miller CJ, Tweden KS, Billington CJ, Shikora SA. Effect of Vagal Nerve Blockade on Moderate Obesity with an Obesity-Related Comorbid Condition: the ReCharge Study. Obesity Surgery 2016, 26: 983-989. PMID: 27048437, PMCID: PMC4831996, DOI: 10.1007/s11695-016-2143-y.Peer-Reviewed Original ResearchConceptsObesity-related comorbid conditionsBody mass indexModerate obesityComorbid conditionsPercentage excess weight lossWeight lossImplant site painVagal nerve blockadeCommon adverse eventsExcess weight lossObesity-related comorbiditiesWeight management counselingType 2 diabetesGreater weight lossSite painAdverse eventsBlockade therapyPrespecified subgroupsSevere obesitySham deviceMass indexNerve blockadeSleep apneaSafety profileClinical trialsNational prevalence, causes, and risk factors for bariatric surgery readmissions
Garg T, Rosas U, Rivas H, Azagury D, Morton JM. National prevalence, causes, and risk factors for bariatric surgery readmissions. The American Journal Of Surgery 2016, 212: 76-80. PMID: 27133197, DOI: 10.1016/j.amjsurg.2016.01.023.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge DistributionBariatric SurgeryBody Mass IndexDatabases, FactualFemaleGastrectomyGastric BypassGastroplastyHumansLaparoscopyLogistic ModelsMaleMiddle AgedMultivariate AnalysisObesity, MorbidOutcome Assessment, Health CarePatient ReadmissionPostoperative ComplicationsPrevalencePrognosisRetrospective StudiesRisk FactorsSex DistributionUnited StatesConceptsLaparoscopic adjustable gastric bandingAdjustable gastric bandingLaparoscopic sleeve gastrectomyGastric bandingGastric bypassLaparoscopic RouxSleeve gastrectomyBariatric surgeryChronic obstructive pulmonary diseaseObstructive pulmonary diseaseBody mass indexAfrican American raceLength of stayCurrent Procedure Terminology codesCommon readmissionReadmitted patientsPulmonary diseaseMass indexOperative timeRisk factorsNational prevalenceReadmissionTerminology codesPatientsPublic Use File
2015
A5083 Comparative Analysis of Body Fat Percentage Versus Body Mass Index to Predict Weight Loss After Bariatric Surgery
Mokhtari T, Deb S, Voller L, Koontz S, Azagury D, Rivas H, Morton J. A5083 Comparative Analysis of Body Fat Percentage Versus Body Mass Index to Predict Weight Loss After Bariatric Surgery. Surgery For Obesity And Related Diseases 2015, 11: s98-s99. DOI: 10.1016/j.soard.2015.08.139.Peer-Reviewed Original Research
2014
Effect of Reversible Intermittent Intra-abdominal Vagal Nerve Blockade on Morbid Obesity: The ReCharge Randomized Clinical Trial
Ikramuddin S, Blackstone RP, Brancatisano A, Toouli J, Shah SN, Wolfe BM, Fujioka K, Maher JW, Swain J, Que FG, Morton JM, Leslie DB, Brancatisano R, Kow L, O’Rourke R, Deveney C, Takata M, Miller CJ, Knudson MB, Tweden KS, Shikora SA, Sarr MG, Billington CJ. Effect of Reversible Intermittent Intra-abdominal Vagal Nerve Blockade on Morbid Obesity: The ReCharge Randomized Clinical Trial. JAMA 2014, 312: 915-922. PMID: 25182100, DOI: 10.1001/jama.2014.10540.Peer-Reviewed Original ResearchConceptsExcess weight lossNerve block groupPrimary safety objectiveWeight lossMorbid obesityAdverse eventsSham groupClinical trialsEfficacy objectiveMean percentage excess weight lossBlock groupPercentage excess weight lossSerious adverse event ratesSham-controlled clinical trialSham device groupVagal nerve blockadeWeight management educationSerious adverse eventsBariatric surgery resultsLong-term morbidityAdverse event ratesObesity-related conditionsNerve block therapyBody mass indexAbdominal painIs 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
The Human Gut Microbiome: A Review of the Effect of Obesity and Surgically Induced Weight Loss
Sweeney TE, Morton JM. The Human Gut Microbiome: A Review of the Effect of Obesity and Surgically Induced Weight Loss. JAMA Surgery 2013, 148: 563-569. PMID: 23571517, PMCID: PMC4392891, DOI: 10.1001/jamasurg.2013.5.Peer-Reviewed Original ResearchConceptsGastric bypassDistal gut microbiomeGut microbiomeWeight lossSurgically Induced Weight LossSurgical weight lossEffect of obesityInduced Weight LossBody mass indexRatio of FirmicutesGut microbiome compositionInfectious colitisBariatric surgeryUlcerative colitisMetabolic syndromeCrohn's diseaseMass indexFurther clinical applicationObese phenotypeWestern dietPubMed searchGut microbiotaEnergy intakeMicrobiome changesHuman gut microbiome
2012
The EMPOWER Study: Randomized, Prospective, Double-Blind, Multicenter Trial of Vagal Blockade to Induce Weight Loss in Morbid Obesity
Sarr MG, Billington CJ, Brancatisano R, Brancatisano A, Toouli J, Kow L, Nguyen NT, Blackstone R, Maher JW, Shikora S, Reeds DN, Eagon JC, Wolfe BM, O’Rourke R, Fujioka K, Takata M, Swain JM, Morton JM, Ikramuddin S, Schweitzer M, Chand B, Rosenthal R, The EMPOWER Study Group. The EMPOWER Study: Randomized, Prospective, Double-Blind, Multicenter Trial of Vagal Blockade to Induce Weight Loss in Morbid Obesity. Obesity Surgery 2012, 22: 1771-1782. PMID: 22956251, DOI: 10.1007/s11695-012-0751-8.Peer-Reviewed Original ResearchConceptsImportant weight lossControl groupWeight lossMorbid obesityVagal blockadePercent excess weight lossSubdiaphragmatic vagal nerveExcess weight lossSerious adverse eventsDuration of therapyDevice-related complicationsBody mass indexMain outcome measuresDevice useResultsStudy subjectsVagal transmissionAdverse eventsVagal nerveMulticenter trialMass indexFeasibility trialEMPOWER studyOutcome measuresInformed consentTherapyWeighing in on bariatric surgery: who and when?
Lodhia N, Morton J. Weighing in on bariatric surgery: who and when? International Journal Of Obesity Supplements 2012, 2: s47-s50. PMID: 25018871, PMCID: PMC4089700, DOI: 10.1038/ijosup.2012.12.Peer-Reviewed Original ResearchBody mass indexBariatric surgeryPublic health preventative measuresAverage body mass indexPopular bariatric surgerySurgical obesity treatmentUnderutilized treatment optionMore comorbid conditionsBariatric surgery outcomesGastric banding proceduresWeight loss recommendationsSurgeon practice patternsPublic health epidemicPreoperative comorbiditiesGastric bypassRoux-enComplication rateWaist circumferenceComorbid conditionsFemale patientsMass indexTreatment optionsObesity treatmentSurgery outcomesHospital characteristicsEffect of Roux-en-Y gastric bypass on testosterone and prostate-specific antigen
Woodard G, Ahmed S, Podelski V, Hernandez-Boussard T, Presti J, Morton J. Effect of Roux-en-Y gastric bypass on testosterone and prostate-specific antigen. British Journal Of Surgery 2012, 99: 693-698. PMID: 22302466, DOI: 10.1002/bjs.8693.Peer-Reviewed Original ResearchConceptsProstate-specific antigenBody mass indexPSA levelsObese menGastric bypassSerum levelsWeight lossTestosterone levelsPSA massPercentage excess weight lossPlasma volumeExcess weight lossEffects of RouxSerum PSA levelsLow serum levelsSerum testosterone levelsConsecutive menMass indexSerum testosteroneProstate cancerMAIN OUTCOMETestosteroneDHEARYGBLongitudinal study
2011
Halo Effect for Bariatric Surgery: Collateral Weight Loss in Patients' Family Members
Woodard GA, Encarnacion B, Peraza J, Hernandez-Boussard T, Morton J. Halo Effect for Bariatric Surgery: Collateral Weight Loss in Patients' Family Members. JAMA Surgery 2011, 146: 1185-1190. PMID: 22006878, DOI: 10.1001/archsurg.2011.244.Peer-Reviewed Original ResearchConceptsGastric bypass surgeryBypass surgeryBody mass indexPatients' family membersAdult family membersHealthy behaviorsBariatric surgeryMass indexWeight lossLower body mass indexFamily membersMultidimensional health assessmentActivity levelsChildren of patientsSignificant weight lossDaily activity levelsQuality of lifeBariatric centerLifestyle counselingMorbid obesitySecondary outcomesWaist circumferenceObese childrenEffective treatmentUncontrollable eating