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
Comparative Safety of Sleeve Gastrectomy and Gastric Bypass Up to 5 Years After Surgery in Patients With Severe Obesity
Howard R, Chao G, Yang J, Thumma J, Chhabra K, Arterburn D, Ryan A, Telem D, Dimick J. Comparative Safety of Sleeve Gastrectomy and Gastric Bypass Up to 5 Years After Surgery in Patients With Severe Obesity. JAMA Surgery 2021, 156: 1160-1169. PMID: 34613354, PMCID: PMC8495604, DOI: 10.1001/jamasurg.2021.4981.Peer-Reviewed Original ResearchConceptsAdjusted hazard ratioSleeve gastrectomyGastric bypassRisk of mortalityCumulative incidenceLong-term riskBariatric surgerySurgical revisionComparative safetyMAIN OUTCOMEUnknown raceLower long-term riskHigher long-term riskUnderwent sleeve gastrectomyRetrospective cohort studyEmergency department useHealth care useLong-term safetyMedicare claims databaseTotal health care spendingCause hospitalizationLaparoscopic RouxCohort studyHazard ratioSecondary outcomesPatient-reported Comorbidity Assessment After Bariatric Surgery
Chao G, Bonham A, Ross R, Stricklen A, Ghaferi A. Patient-reported Comorbidity Assessment After Bariatric Surgery. Annals Of Surgery 2021, 276: e792-e797. PMID: 33914479, DOI: 10.1097/sla.0000000000004841.Peer-Reviewed Original ResearchConceptsGastroesophageal reflux diseaseObstructive sleep apneaComorbidity assessmentPostoperative questionnaireBariatric surgerySleep apneaBariatric surgery patientsMedical chart auditLong-term outcomesLong-term efficacyCross-sectional studyPostoperative comorbiditiesGastric bypassReflux diseasePatient comorbiditiesSurgery patientsSurgical patientsChart auditPatient reportsBACKGROUND DATAComorbiditiesPatientsResponse rateΚ statisticMean difference
2020
Perioperative 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
2018
Revised cardiac risk index poorly predicts cardiovascular complications after adhesiolysis for small bowel obstruction
Asuzu DT, Chao GF, Pei KY. Revised cardiac risk index poorly predicts cardiovascular complications after adhesiolysis for small bowel obstruction. Surgery 2018, 164: 1198-1203. PMID: 29945781, DOI: 10.1016/j.surg.2018.05.012.Peer-Reviewed Original ResearchConceptsCardiac Risk IndexSmall bowel obstructionCardiovascular complicationsBowel obstructionRisk calculatorNational Surgical Quality Improvement Program risk calculatorNational Surgical Quality Improvement Program datasetSurgeons National Surgical Quality Improvement ProgramNational Surgical Quality Improvement ProgramSurgical Quality Improvement ProgramCardiac risk evaluationLarge surgical samplesPreoperative cardiac evaluationPreoperative risk stratificationNumber of patientsUnivariable logistic regressionQuality Improvement ProgramRisk indexSurgical subgroupsCardiac complicationsCardiac evaluationCardiac eventsLaparoscopic adhesiolysisSurgical patientsPreoperative testing