2025
Preoperative submaximal cardiopulmonary exercise testing and its association with early postoperative complications
Carr Z, Charchaflieh J, Brenes-Bastos A, He H, Lin H, Jankelovits A, Gu E, Zafar J, Ghali F, Tan W, Heerdt P. Preoperative submaximal cardiopulmonary exercise testing and its association with early postoperative complications. BJA Open 2025, 14: 100407. PMID: 40421445, PMCID: PMC12105740, DOI: 10.1016/j.bjao.2025.100407.Peer-Reviewed Original ResearchLength of staySubmaximal cardiopulmonary exercise testingInstitutional review board approvalPostoperative complication riskReview board approvalDuke Activity Status IndexCardiopulmonary exercise testingIncreased length of stayAdjusted multivariable regression modelsPostoperative complications predictionPulmonary capacitanceOpen-labelPeak oxygen uptakePerioperative surveillancePrimary endpointNoncardiac surgeryPostoperative complicationsSecondary endpointsSingle-centreComplication riskMET assessmentPeak VOBoard approvalMultivariate regression modelMetabolic equivalentsImplementation of Brief Submaximal Cardiopulmonary Testing in a High-Volume Presurgical Evaluation Clinic: Feasibility Cohort Study
Carr Z, Agarkov D, Li J, Charchaflieh J, Brenes-Bastos A, Freund J, Zafar J, Schonberger R, Heerdt P. Implementation of Brief Submaximal Cardiopulmonary Testing in a High-Volume Presurgical Evaluation Clinic: Feasibility Cohort Study. JMIR Perioperative Medicine 2025, 8: e65805. PMID: 39773953, PMCID: PMC11888076, DOI: 10.2196/65805.Peer-Reviewed Original ResearchConceptsDuke Activity Status IndexPeak oxygen uptakePeak METsEvaluation clinicParticipant satisfactionOxygen uptakeSubmaximal cardiopulmonary exercise testingFunctional capacity assessmentLow functional capacityCardiopulmonary exercise testingPerceived exertionMET assessmentStructured surveyCapacity surveyMedian patient satisfactionProvider-drivenExercise testMean session timePearson correlation coefficientSurvey scoresCardiopulmonary testFunctional capacityPatient satisfactionCohort studyInclusion criteria
2023
Information Technology-Enhanced Telehealth Consultations Reduce Preoperative Evaluation Center Visits in a Bariatric Surgery Population
Zafar J, Chan K, Ryder L, Duffy A, Dai F, Carr Z, Charchaflieh J. Information Technology-Enhanced Telehealth Consultations Reduce Preoperative Evaluation Center Visits in a Bariatric Surgery Population. Healthcare 2023, 11: 309. PMID: 36766884, PMCID: PMC9914614, DOI: 10.3390/healthcare11030309.Peer-Reviewed Original ResearchPreoperative evaluation centerPreoperative evaluation processDay of surgeryQuality of careBariatric surgery patientsPerson patient visitsSecondary outcomesSurgery patientsPrimary outcomePatient visitsBariatric surgery populationRetrospective cohort analysisAppropriate patient selectionPreoperative patient evaluationAcademic health systemAdditional testingSurgery populationPreoperative evaluationPatient selectionPatient evaluationCohort analysisPreoperative processCenter visitsTelehealth consultationsPatient care
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