2023
The Degree of Preoperative Hypoalbuminemia Is Associated with Risk of Postoperative Complications in Metabolic and Bariatric Surgery Patients
Ying L, Chao G, Canner J, Graetz E, Ghiassi S, Schwartz J, Zolfaghari E, Schneider E, Gibbs K. The Degree of Preoperative Hypoalbuminemia Is Associated with Risk of Postoperative Complications in Metabolic and Bariatric Surgery Patients. Obesity Surgery 2023, 34: 51-70. PMID: 37994997, DOI: 10.1007/s11695-023-06944-1.Peer-Reviewed Original ResearchConceptsBariatric surgery patientsPostoperative complicationsOdds ratioRevision patientsSurgery patientsRevision surgeryIntensive care unit admissionQuality Improvement Program databaseDegree of hypoalbuminemiaImpact of hypoalbuminemiaPrevalence of hypoalbuminemiaCare unit admissionLaparoscopic sleeve gastrectomyGastric bypass patientsImprovement Program databaseBody mass indexInsulin-dependent diabetesMultivariable logistic regressionAnesthesia classMild hypoalbuminemiaPreoperative hypoalbuminemiaUnit admissionUnplanned intubationPrimary surgerySleeve gastrectomyOut-of-pocket Costs for Commercially-insured Patients in the Years Following Bariatric Surgery
Chao G, Yang J, Thumma J, Chhabra K, Arterburn D, Ryan A, Telem D, Dimick J. Out-of-pocket Costs for Commercially-insured Patients in the Years Following Bariatric Surgery. Annals Of Surgery 2023, 277: e332-e338. PMID: 35129487, PMCID: PMC9091055, DOI: 10.1097/sla.0000000000005291.Peer-Reviewed Original ResearchMeSH KeywordsBariatric SurgeryGastrectomyGastric BypassHealth ExpendituresHumansObesity, MorbidRetrospective StudiesTreatment OutcomeConceptsSleeve gastrectomyBariatric surgeryOOP costsIBM MarketScan Commercial Claims DatabasesProcedure choiceMarketScan Commercial Claims databaseLaparoscopic sleeve gastrectomyBariatric surgery proceduresPostoperative year 1Commercial claims databaseTotal OOP costsYear 1Year 2Year 3Gastric bypassRetrospective studyClaims databaseSurgical episodesInsurance typeOperative yearBACKGROUND DATASurgery proceduresPatientsPrimary analysisClinical contributors
2022
The role of preoperative toxicology screening in patients undergoing bariatric surgery
Chao G, Ying L, Chan S, Alturki N, Aravind P, Thaqi M, Mahmoud A, Morton J. The role of preoperative toxicology screening in patients undergoing bariatric surgery. Surgery For Obesity And Related Diseases 2022, 19: 187-193. PMID: 36443215, DOI: 10.1016/j.soard.2022.10.021.Peer-Reviewed Original ResearchConceptsPreoperative lengthBariatric surgeryToxicology testingWeight lossBariatric surgical populationBody mass indexImportant surgical outcomesAcademic health systemGastric bypassLack of evidenceSurgical populationPostoperative outcomesRetrospective reviewMass indexSurgical outcomesUrine testingPositivity rateMean changePositive testingPatientsNegative testingReadmissionHealth systemChi-squarePositivityLong-term comparative effectiveness of gastric bypass and sleeve gastrectomy on use of antireflux medication: a difference-in-differences analysis
Howard R, Yang J, Thumma J, Arterburn D, Ryan A, Chao G, Telem D, Dimick J. Long-term comparative effectiveness of gastric bypass and sleeve gastrectomy on use of antireflux medication: a difference-in-differences analysis. Surgery For Obesity And Related Diseases 2022, 18: 1033-1041. PMID: 35649735, DOI: 10.1016/j.soard.2022.04.016.Peer-Reviewed Original ResearchConceptsLong-term comparative effectivenessGERD medication useCommon bariatric operationGastric bypassMedication useSleeve gastrectomyAntireflux medicationComparative effectivenessBariatric surgeryBariatric operationsAntireflux medication useInpatient bariatric surgeryLong-term effectivenessGastroesophageal refluxRetrospective studyNational cohortGastrectomyTreatment decisionsMedicare beneficiariesPatientsSurgeryBypassMedicationsGreater reductionDifferential changesMedication Use for Obesity-Related Comorbidities After Sleeve Gastrectomy or Gastric Bypass
Howard R, Chao G, Yang J, Thumma J, Arterburn D, Telem D, Dimick J. Medication Use for Obesity-Related Comorbidities After Sleeve Gastrectomy or Gastric Bypass. JAMA Surgery 2022, 157: 248-256. PMID: 35019988, PMCID: PMC8756362, DOI: 10.1001/jamasurg.2021.6898.Peer-Reviewed Original ResearchConceptsTime of surgeryGastric bypassMedication discontinuationSleeve gastrectomyCumulative incidenceMedication useHyperlipidemia medicationsComorbidity resolutionLower incidenceCommon bariatric surgical proceduresLipid-lowering medication useComparative effectiveness research studyAdult Medicare beneficiariesDiabetes medication useAntihypertensive medication useLipid-lowering medicationsBariatric surgical proceduresSubset of patientsLong-term trialsAntihypertensive medicationsDiabetes medicationsLaparoscopic RouxBariatric surgeryPrimary outcomeMean ageComparative effectiveness of sleeve gastrectomy vs Roux-en-Y gastric bypass in patients giving birth after bariatric surgery: reinterventions and obstetric outcomes
Chao G, Yang J, Peahl A, Thumma J, Dimick J, Arterburn D, Telem D. Comparative effectiveness of sleeve gastrectomy vs Roux-en-Y gastric bypass in patients giving birth after bariatric surgery: reinterventions and obstetric outcomes. Surgical Endoscopy 2022, 36: 6954-6968. PMID: 35099628, DOI: 10.1007/s00464-022-09063-7.Peer-Reviewed Original ResearchConceptsAdverse obstetric outcomesGastric bypassObstetric outcomesBariatric surgerySleeve gastrectomyComparative effectivenessRisk of reinterventionLaparoscopic sleeve gastrectomyRetrospective cohort studyMultivariable logistic regressionSignificant differencesCommon procedure todayResultsFrom 2011Reintervention rateBariatric proceduresCohort studyIBM MarketScanNational cohortInverse probability weightingGastrectomyReinterventionRouxSurgeryPatientsBypass
2021
Volume–outcome relationships for Roux-en-Y gastric bypass patients in the sleeve gastrectomy era
Chao G, Yang J, Thumma J, Chhabra K, Arterburn D, Ryan A, Telem D, Dimick J. Volume–outcome relationships for Roux-en-Y gastric bypass patients in the sleeve gastrectomy era. Surgical Endoscopy 2021, 36: 3884-3892. PMID: 34471980, DOI: 10.1007/s00464-021-08705-6.Peer-Reviewed Original ResearchAsian American Pacific Islander Representation in Outcomes Research: NSQIP Scoping Review
Chao GF, Emlaw J, Chiu AS, Yang J, Thumma J, Brackett A, Pei KY. Asian American Pacific Islander Representation in Outcomes Research: NSQIP Scoping Review. Journal Of The American College Of Surgeons 2021, 232: 682-689.e5. PMID: 33705984, DOI: 10.1016/j.jamcollsurg.2021.01.015.Peer-Reviewed Original ResearchConceptsSurgical outcomes researchOutcomes researchMultivariable logistic regressionHealth services researchWeb of ScienceNSQIP dataPatient outcomesProportion of studiesAuthors' institutionPatientsBetter careLogistic regressionStudy characteristicsHealth equityDemographic characteristicsNSQIPPacific IslandersScoping ReviewSeparate groupsOne-thirdServices researchPublication yearAssociationAAPI populationReview
2020
Bariatric Surgery in Medicare Patients
Chao G, Chhabra K, Yang J, Thumma J, Arterburn D, Ryan A, Telem D, Dimick J. Bariatric Surgery in Medicare Patients. Annals Of Surgery 2020, 276: 133-139. PMID: 33214440, PMCID: PMC8126578, DOI: 10.1097/sla.0000000000004526.Peer-Reviewed Original ResearchConceptsBariatric surgeryED utilizationHealthcare utilizationClinical safety outcomesMedicare Evidence DevelopmentBariatric surgery patientsTreatment effectsGastric bypassSurgery patientsMedicare cohortBariatric outcomesMedicare patientsHernia repairMedicare claimsSafety outcomesMedicare beneficiariesComparative effectivenessBypassSurgeryInstrumental variable analysisEvidence developmentReinterventionRehospitalizationComplicationsPatientsPerioperative risks of bariatric surgery among patients with and without history of solid organ transplant
Montgomery JR, Cohen JA, Brown CS, Sheetz KH, Chao GF, Waits SA, Telem DA. Perioperative risks of bariatric surgery among patients with and without history of solid organ transplant. American Journal Of Transplantation 2020, 20: 2530-2539. PMID: 32243667, PMCID: PMC7838764, DOI: 10.1111/ajt.15883.Peer-Reviewed Original ResearchConceptsGlomerular filtration rateBariatric surgeryPrevious transplantSurgical complicationsPrimary outcomeMedical complicationsPatient populationFiltration rateLaparoscopic sleeve gastrectomySolid organ transplantsGastric bypass proceduresIncidence of deathLimited case seriesMultivariable logistic regressionIntraabdominal leakUnplanned reoperationDay readmissionInfectious complicationsPerioperative riskSleeve gastrectomyTransplant patientsBariatric proceduresPerioperative safetyIndividual complicationsCase series