clinical-research-slideClinical Research

For the past decade, Dr. Jesse Ehrenfeld has conducted clinical research focusing on biomedical informatics leading to the presentation of over 200 abstracts at national/international meetings and the publication of more than 100 manuscripts in high impact peer-reviewed journals. He has co-authored thirteen clinical texts.

His interests within bioinformatics include: perioperative systems design, real-time decision support via pragmatic applications of process monitoring & control, and the development/application of intraoperative outcomes measures.

His work around improving physiologic monitoring and patient safety includes five other major academic centers where he is now determining how decision support tools can best impact perioperative care.


Funding Sources

  • National Institutes of Health
  • U.S. Department of Defense
  • Robert Wood Johnson Foundation
  • American Medical Association
  • Foundation for Anesthesia Education and Research
  • Anesthesia Patient Safety Foundation
  • Partners Healthcare Office of Graduate Medical Education
  • Center for Integration of Medicine and Technology
  • The Vanderbilt Institute for Clinical and Translational Research (VICTR)
  • Norwegian University of Science & Technology

Editorial Service


  • Journal of Medical Systems

Ad-Hoc Reviewer:

  • AHRQ Effective Health Care
  • Anesthesiology
  • Anesthesia and Analgesia
  • Annals of Surgery
  • British Journal of Anaesthesia
  • Indian Journal of Anesthesiology
  • Journal of Hospital Medicine
  • Minerva Anestesiologica
  • PLoS Medicine
  • Transactions on Intelligent Systems and Technology

Publications Listed on Pubmed

Pregnall AM; Churchwell AL; Ehrenfeld JM, 2021. A Call for LGBTQ Content in Graduate Medical Education Program Requirements.  Acad Med 96(6):828-835

Gonzales G; Henning-Smith C; Ehrenfeld JM, 2021. Changes in health insurance coverage, access to care, and health services utilization by sexual minority status in the United States, 2013-2018.  Health Serv Res 56(2):235-246

Libby C; Ehrenfeld J, 2021. Facial Recognition Technology in 2021: Masks, Bias, and the Future of Healthcare.  J Med Syst 45(4):39

Al-Emran M; Ehrenfeld JM, 2021. Breaking out of the Box: Wearable Technology Applications for Detecting the Spread of COVID-19.  J Med Syst 45(2):20

Freundlich RE; Bulka CM; Wanderer JP; Rothman BS; Sandberg WS; Ehrenfeld JM, 2020. Prospective Investigation of the Operating Room Time-Out Process.  Anesth Analg 130(3):725-729

Freundlich RE; Wanderer JP; Rothman BS; Sandberg WS; Ehrenfeld JM, 2020. In Response.  Anesth Analg 130(4):e109-e110

Lan M; Dambrino RJ 4th; Youssef A; Yengo-Kahn A; Dewan MC; Ehrenfeld J; Bonfield CM; Zuckerman SL, 2020. Repeat Surgery After Decompressive Craniectomy for Traumatic Intracranial Hemorrhage: Outcomes and Predictors.  World Neurosurg 133:e757-e766

Ding JM; Ehrenfeld JM; Edmiston EK; Eckstrand K; Beach LB, 2020. A Model for Improving Health Care Quality for Transgender and Gender Nonconforming Patients.  Jt Comm J Qual Patient Saf 46(1):37-43

Novak LL; Simpson CL; Coco J; McNaughton CD; Ehrenfeld JM; Bloos SM; Fabbri D, 2020. Understanding the Information Needs and Context of Trauma Handoffs to Design Automated Sensing Clinical Documentation Technologies: Qualitative Mixed-Method Study of Military and Civilian Cases.  J Med Internet Res 22(9):e17978

Gamble RM; Taylor SS; Huggins AD; Ehrenfeld JM, 2020. Trans-specific Geriatric Health Assessment (TGHA): An inclusive clinical guideline for the geriatric transgender patient in a primary care setting.  Maturitas 132:70-75

Allen BFS; Jablonski PM; McEvoy MD; Ehrenfeld JM; Shi H; King AB; Wanderer JP, 2020. Implementation of an Enhanced Recovery Protocol (ERP) is associated with an increase in the perioperative use of non-opioid multimodal analgesia for non-ERP patients.  J Clin Anesth 62:109694

Miller BJ; Slota JM; Ehrenfeld JM, 2020. Price Transparency in the Electronic Health Record-Reply.  JAMA 323(3):281-282

Long JB; Ehrenfeld JM, 2020. The Role of Augmented Intelligence (AI) in Detecting and Preventing the Spread of Novel Coronavirus.  J Med Syst 44(3):59

Miller BJ; Mandelberg MC; Griffith NC; Ehrenfeld JM, 2020. Price Transparency: Empowering Patient Choice and Promoting Provider Competition.  J Med Syst 44(4):80

Freundlich RE; Li G; Grant B; St Jacques P; Sandberg WS; Ehrenfeld JM; Shotwell MS; Wanderer JP, 2020. Patient satisfaction survey scores are not an appropriate metric to differentiate performance among anesthesiologists.  J Clin Anesth 65:109814

Fowler LC; Ehrenfeld JM; McEvoy MD, 2020. Development and Implementation of a Nonclinical Professional Development Rotation.  A A Pract 14(6):e01208

Raymond BL; Wanderer JP; Hawkins AT; Geiger TM; Ehrenfeld JM; Stokes JW; McEvoy MD, 2019. Use of the American College of Surgeons National Surgical Quality Improvement Program Surgical Risk Calculator During Preoperative Risk Discussion: The Patient Perspective.  Anesth Analg 128(4):643-650

LeCompte M; Stewart M; Harris T; Rives G; Guth C; Ehrenfeld J; Sexton K; Terhune K, 2019. See one, do one, teach one: A randomized controlled study evaluating the benefit of autonomy in surgical education.  Am J Surg 217(2):281-287

Freundlich RE; Nelson SE; Qiu Y; Ehrenfeld JM; Sandberg WS; Wanderer JP, 2019. A retrospective evaluation of the risk of bias in perioperative temperature metrics.  J Clin Monit Comput 33(5):911-916

Nelson SE; Li G; Shi H; Terekhov M; Ehrenfeld JM; Wanderer JP, 2019. The impact of reduction of testing at a Preoperative Evaluation Clinic for elective cases: Value added without adverse outcomes.  J Clin Anesth 55:92-99

Magarik M; Fowler LC; Robertson A; Ehrenfeld JM; McEvoy MD; Deitte LA, 2019. There's an App for That: A Case Study on the Impact of Spaced Education on Ordering CT Examinations.  J Am Coll Radiol 16(3):360-364

Tuwatananurak JP; Zadeh S; Xu X; Vacanti JA; Fulton WR; Ehrenfeld JM; Urman RD, 2019. Machine Learning Can Improve Estimation of Surgical Case Duration: A Pilot Study.  J Med Syst 43(3):44

Rowland MJ; Urman RD; Xu X; Ehrenfeld JM; Preiss DA; Vacanti JC, 2019. The Impact of Airway Technique on Anesthesia Control Time.  J Med Syst 43(3):72

Qiu Y; Freundlich RE; Nelson S; Clark C; Ehrenfeld JM; Wanderer JP, 2019. Using a National Representative Sample to Evaluate the Integrity of the 30-Day Surgical Mortality Metric.  J Med Syst 43(6):155

Crothers G; Edwards DA; Ehrenfeld JM; Woo E; McCluggage L; Lobo B, 2019. Evaluating the Impact of Auto-Calculation Settings on Opioid Prescribing at an Academic Medical Center.  Jt Comm J Qual Patient Saf 45(6):416-422

Miller BJ; Slota JM; Ehrenfeld JM, 2019. Redefining the Physician's Role in Cost-Conscious Care: The Potential Role of the Electronic Health Record.  JAMA 322(8):721-722

Ehrenfeld JM; Gottlieb KG; Beach LB; Monahan SE; Fabbri D, 2019. Development of a Natural Language Processing Algorithm to Identify and Evaluate Transgender Patients in Electronic Health Record Systems.  Ethn Dis 29(Suppl 2):441-450

Kennedy BB; Russell RG; Martinez W; Gigante CI; Penrod CH; Ehrenfeld JM; Vinson KN; Swan R; Schorn MN; Brady DW; Miller B, 2019. Development of an interprofessional clinical learning environment report card.  J Prof Nurs 35(4):314-319

Brown RM; Wang L; Coston TD; Krishnan NI; Casey JD; Wanderer JP; Ehrenfeld JM; Byrne DW; Stollings JL; Siew ED; Bernard GR; Self WH; Rice TW; Semler MW, 2019. Balanced Crystalloids versus Saline in Sepsis. A Secondary Analysis of the SMART Clinical Trial.  Am J Respir Crit Care Med 200(12):1487-1495

Heard J; Paris RA; Scully D; McNaughton C; Ehrenfeld JM; Coco J; Fabbri D; Bodenheimer B; Adams JA, 2019. Automatic Clinical Procedure Detection for Emergency Services.  Annu Int Conf IEEE Eng Med Biol Soc 2019:337-340

Bloos SM; McNaughton CD; Coco JR; Novak LL; Adams JA; Bodenheimer RE; Ehrenfeld JM; Heard JR; Paris RA; Simpson CL; Scully DM; Fabbri D, 2019. Feasibility Assessment of a Pre-Hospital Automated Sensing Clinical Documentation System.  AMIA Annu Symp Proc 2019:248-257

Epstein RH; Dexter F; Ehrenfeld JM, 2018. Differences in the incidence and timing of reintubation in the postanesthesia care unit among large teaching hospitals.  J Clin Anesth 46:74

Nagrebetsky A; Dutton RP; Ehrenfeld JM; Urman RD, 2018. Variation in Frequency of Intraoperative Arterial, Central Venous and Pulmonary Artery Catheter Placement During Kidney Transplantation: An Analysis of Invasive Monitoring Trends.  J Med Syst 42(4):66

Self WH; Semler MW; Wanderer JP; Wang L; Byrne DW; Collins SP; Slovis CM; Lindsell CJ; Ehrenfeld JM; Siew ED; Shaw AD; Bernard GR; Rice TW, 2018. Balanced Crystalloids versus Saline in Noncritically Ill Adults.  N Engl J Med 378(9):819-828

Semler MW; Self WH; Wanderer JP; Ehrenfeld JM; Wang L; Byrne DW; Stollings JL; Kumar AB; Hughes CG; Hernandez A; Guillamondegui OD; May AK; Weavind L; Casey JD; Siew ED; Shaw AD; Bernard GR; Rice TW, 2018. Balanced Crystalloids versus Saline in Critically Ill Adults.  N Engl J Med 378(9):829-839

Polderman TJC; Kreukels BPC; Irwig MS; Beach L; Chan YM; Derks EM; Esteva I; Ehrenfeld J; Heijer MD; Posthuma D; Raynor L; Tishelman A; Davis LK, 2018. The Biological Contributions to Gender Identity and Gender Diversity: Bringing Data to the Table.  Behav Genet 48(2):95-108

Wanderer JP; Nelson SE; Hester DL; Shotwell M; Sandberg WS; Anderson-Dam J; Raines DE; Ehrenfeld JM, 2018. Sources of Variation in Anesthetic Drug Costs.  Anesth Analg 126(4):1241-1248

Shinall MC Jr; Ehrenfeld JM; Gunter OL Jr, 2018. Nonoperative Management of Perforated Hollow Viscera in a Palliative Care Unit.  Ann Surg 268(1):e1-e3

Ehrenfeld JM, 2018. In Reply.  Anesthesiology 128(2):420

Stewart MK; Henry RC; Ehrenfeld JM; Terhune KP, 2018. Utility of a Standardized Fourth-Year Medical Student Surgical Preparatory Curriculum: Program Director Perceptions.  J Surg Educ 75(3):639-643

Ehrenfeld JM; Zimmerman DR; Gonzales G, 2018. Healthcare Utilization among Transgender Individuals in California.  J Med Syst 42(5):77

Freundlich RE; Ehrenfeld JM, 2018. Perioperative Information Systems: Opportunities to Improve Delivery of Care and Clinical Outcomes in Cardiac and Vascular Surgery.  J Cardiothorac Vasc Anesth 32(3):1458-1463

Richardson KM; Shen ST; Gupta DK; Wells QS; Ehrenfeld JM; Wanderer JP, 2018. Prognostic Significance and Clinical Utility of Intraventricular Conduction Delays on the Preoperative Electrocardiogram.  Am J Cardiol 121(8):997-1003

Ehrenfeld JM; Wanderer JP, 2018. Technology as friend or foe? Do electronic health records increase burnout?  Curr Opin Anaesthesiol 31(3):357-360

Gonzales G; Ehrenfeld JM, 2018. Sex is not gender and why it matters for population health.  Br J Anaesth 120(5):1130-1131

Hagaman DH; Ehrenfeld JM; Terekhov M; Kla KM; Hamm J; Brumley M; Wanderer JP, 2018. Compliance Is Contagious: Using Informatics Methods to Measure the Spread of a Documentation Standard From a Preoperative Clinic.  J Perianesth Nurs 33(4):436-443

Bradham TS; Sponsler KC; Watkins SC; Ehrenfeld JM, 2018. Creating a Quality Improvement Course for Undergraduate Medical Education: Practice What You Teach.  Acad Med 93(10):1491-1496

Hagaman D; Pilla MA; Ehrenfeld JM, 2018. Intraoperative Transfusion Guidelines: Promoting Clinician Adherence in the Operating Room.  Anesth Analg 127(3):596-597

Freundlich RE; Wanderer JP; Ehrenfeld JM, 2018. Clinical Decision Support Tools Need to Improve More Than Just Process Outcomes.  Anesthesiology 129(3):614

Pirtle C; Ehrenfeld J, 2018. Blockchain for Healthcare: The Next Generation of Medical Records?  J Med Syst 42(9):172

Huerta LE; Wanderer JP; Ehrenfeld JM; Freundlich RE; Rice TW; Semler MW, 2018. Validation of a Sequential Organ Failure Assessment Score using Electronic Health Record Data.  J Med Syst 42(10):199

Bhutiani M; Jablonski PM; Ehrenfeld JM; McEvoy MD; Fowler LC; Wanderer JP, 2018. Decision Support Tool Improves Real and Perceived Anesthesiology Resident Relief Equity.  Anesth Analg 127(2):513-519

Tiwari V; Ehrenfeld JM; Sandberg WS, 2018. Does a first-case on-time-start initiative achieve its goal by starting the entire process earlier or by tightening the distribution of start times?  Br J Anaesth 121(5):1148-1155

Gonzales G; Ehrenfeld JM, 2018. The Association between State Policy Environments and Self-Rated Health Disparities for Sexual Minorities in the United States.  Int J Environ Res Public Health 15.

Zhang L; Fabbri D; Lasko TA; Ehrenfeld JM; Wanderer JP, 2018. A System for Automated Determination of Perioperative Patient Acuity.  J Med Syst 42(7):123

Freundlich RE; Pandharipande P; Ehrenfeld JM, 2018. A Call for Electronic Health Record-based Data Sharing for Clinical Trials in Critical Care.  J Med Syst 42(7):115

Ehrenfeld JM; Wanderer JP; Sandberg WS, 2018. Anesthesia Care Handovers and Risk of Adverse Outcomes.  JAMA 319(21):2236-2237

Freundlich RE; Wanderer JP; Ehrenfeld JM, 2017. Building Big Datasets: Do Not Forget the EMR.  Anesth Analg 124(4):1367

Ehrenfeld JM, 2017. WannaCry, Cybersecurity and Health Information Technology: A Time to Act.  J Med Syst 41(7):104

Ehrenfeld JM; Fleischut PM, 2017. Engaging in risky business: is it time to rethink risk tolerance in anaesthesia?  Br J Anaesth 118(5):654-655

Self WH; Semler MW; Wanderer JP; Ehrenfeld JM; Byrne DW; Wang L; Atchison L; Felbinger M; Jones ID; Russ S; Shaw AD; Bernard GR; Rice TW, 2017. Saline versus balanced crystalloids for intravenous fluid therapy in the emergency department: study protocol for a cluster-randomized, multiple-crossover trial.  Trials 18(1):178

Semler MW; Self WH; Wang L; Byrne DW; Wanderer JP; Ehrenfeld JM; Stollings JL; Kumar AB; Hernandez A; Guillamondegui OD; May AK; Siew ED; Shaw AD; Bernard GR; Rice TW, 2017. Balanced crystalloids versus saline in the intensive care unit: study protocol for a cluster-randomized, multiple-crossover trial.  Trials 18(1):129

Stapelfeldt WH; Yuan H; Dryden JK; Strehl KE; Cywinski JB; Ehrenfeld JM; Bromley P, 2017. The SLUScore: A Novel Method for Detecting Hazardous Hypotension in Adult Patients Undergoing Noncardiac Surgical Procedures.  Anesth Analg 124(4):1135-1152

McDowell J; Wu A; Ehrenfeld JM; Urman RD, 2017. Effect of the Implementation of a New Electronic Health Record System on Surgical Case Turnover Time.  J Med Syst 41(3):42

Theobald CN; Choma NN; Ehrenfeld JM; Russ S; Kripalani S, 2017. Effect of a Handover Tool on Efficiency of Care and Mortality for Interhospital Transfers.  J Hosp Med 12(1):23-28

Ehrenfeld JM; Wanderer JP; Terekhov M; Rothman BS; Sandberg WS, 2017. A Perioperative Systems Design to Improve Intraoperative Glucose Monitoring Is Associated with a Reduction in Surgical Site Infections in a Diabetic Patient Population.  Anesthesiology 126(3):431-440

Upchurch CP; Grijalva CG; Russ S; Collins SP; Semler MW; Rice TW; Liu D; Ehrenfeld JM; High K; Barrett TW; McNaughton CD; Self WH, 2017. Comparison of Etomidate and Ketamine for Induction During Rapid Sequence Intubation of Adult Trauma Patients.  Ann Emerg Med 69(1):24-33.e2

Semler MW; Wanderer JP; Ehrenfeld JM; Stollings JL; Self WH; Siew ED; Wang L; Byrne DW; Shaw AD; Bernard GR; Rice TW, 2017. Balanced Crystalloids versus Saline in the Intensive Care Unit. The SALT Randomized Trial.  Am J Respir Crit Care Med 195(10):1362-1372

Coute RA; Ehrenfeld JM; Gupta DK; Terekhov MA; Wanderer JP, 2017. Electronically self-assessed functional capacity and exercise testing: A comparison of the Duke Activity Status Index and Patient-Reported Outcomes Measurement Information System tools.  Am Heart J 188:82-86

Tsai MH; Huynh TT; Breidenstein MW; O'Donnell SE; Ehrenfeld JM; Urman RD, 2017. A System-Wide Approach to Physician Efficiency and Utilization Rates for Non-Operating Room Anesthesia Sites.  J Med Syst 41(7):112

Bulka CM; Ehrenfeld JM, 2017. In Reply.  Anesthesiology 127(1):198

Taylor SS; Ehrenfeld JM, 2017. Electronic Health Records and Preparedness: Lessons from Hurricanes Katrina and Harvey.  J Med Syst 41(11):173

Johnson KB; Ehrenfeld JM, 2017. An EPIC Switch: Preparing for an Electronic Health Record Transition at Vanderbilt University Medical Center.  J Med Syst 42(1):6

O'Neal JB; Billings FT 4th; Liu X; Shotwell MS; Liang Y; Shah AS; Ehrenfeld JM; Wanderer JP; Shaw AD, 2017. Risk factors for delirium after cardiac surgery: a historical cohort study outlining the influence of cardiopulmonary bypass.  Can J Anaesth 64(11):1129-1137

Cutrer WB; Ehrenfeld JM, 2017. Protocolization, Standardization and the Need for Adaptive Expertise in our Medical Systems.  J Med Syst 41(12):200

Gabriel RA; Ehrenfeld JM; Urman RD, 2017. Preoperative Genetic Testing and Personalized Medicine: Changing the Care Paradigm.  J Med Syst 41(12):185

Freundlich RE; Ehrenfeld JM, 2017. Quality metrics: hard to develop, hard to validate.  Br J Anaesth 119(1):10-11

Freundlich RE; Ehrenfeld JM, 2017. Anesthesia information management: clinical decision support.  Curr Opin Anaesthesiol 30(6):705-709

Cummings JJ; Ehrenfeld JM; McEvoy MD, 2017. A Guide to Implementing Enhanced Recovery After Surgery Protocols: Creating, Scaling, and Managing a Perioperative Consult Service.  Int Anesthesiol Clin 55(4):101-115

McKown AC; Wang L; Wanderer JP; Ehrenfeld J; Rice TW; Bernard GR; Semler MW, 2017. Predicting Major Adverse Kidney Events among Critically Ill Adults Using the Electronic Health Record.  J Med Syst 41(10):156

O'Neal JB; Billings FT 4th; Liu X; Shotwell MS; Liang Y; Shah AS; Ehrenfeld JM; Wanderer JP; Shaw AD, 2017. Effect of Preoperative Beta-Blocker Use on Outcomes Following Cardiac Surgery.  Am J Cardiol 120(8):1293-1297

Broman KK; Phillips SE; Ehrenfeld JM; Patel MB; Guillamondegui OM; Sharp KW; Pierce RA; Poulose BK; Holzman MD, 2017. Identifying Futile Interfacility Surgical Transfers.  Am Surg 83(8):866-870

Gabriel RA; Burton BN; Tsai MH; Ehrenfeld JM; Dutton RP; Urman RD, 2017. After-hour Versus Daytime Shifts in Non-Operating Room Anesthesia Environments: National Distribution of Case Volume, Patient Characteristics, and Procedures.  J Med Syst 41(9):140

Rothman BS; Shotwell MS; Beebe R; Wanderer JP; Ehrenfeld JM; Patel N; Sandberg WS, 2016. Electronically Mediated Time-out Initiative to Reduce the Incidence of Wrong Surgery: An Interventional Observational Study.  Anesthesiology 125(3):484-94

Terekhov MA; Ehrenfeld JM; Wanderer JP, 2016. In Reply.  Anesthesiology 124(5):1196-7

Ehrenfeld JM; Spickard WA 3rd; Cutrer WB, 2016. Medical Student Contributions In The Workplace: Can We Put a Value on Priceless?  J Med Syst 40(5):128

Wu A; Brovman EY; Whang EE; Ehrenfeld JM; Urman RD, 2016. The Impact of Overestimations of Surgical Control Times Across Multiple Specialties on Medical Systems.  J Med Syst 40(4):95

McEvoy MD; Wanderer JP; King AB; Geiger TM; Tiwari V; Terekhov M; Ehrenfeld JM; Furman WR; Lee LA; Sandberg WS, 2016. A perioperative consult service results in reduction in cost and length of stay for colorectal surgical patients: evidence from a healthcare redesign project.  Perioper Med (Lond) 5:3

Beazley B; Bulka CM; Landsman IS; Ehrenfeld JM, 2016. Demographic Predictors of NPO Violations in Elective Pediatric Surgery.  J Perianesth Nurs 31(1):36-40

Kummerow Broman K; Phillips S; Hayes RM; Ehrenfeld JM; Holzman MD; Sharp K; Kripalani S; Poulose BK, 2016. Insurance status influences emergent designation in surgical transfers.  J Surg Res 200(2):579-85

Aline F; Wanderer JP; Ehrenfeld JM, 2016. Managing the Impact of the ICD-10 Transition on a Data Warehouse.  J Med Syst 40(3):57

McEvoy MD; Hand WR; Stiegler MP; DiLorenzo AN; Ehrenfeld JM; Moran KR; Lekowski R; Nunnally ME; Manning EL; Shi Y; Shotwell MS; Gupta RK; Corey JM; Schell RM, 2016. A Smartphone-based Decision Support Tool Improves Test Performance Concerning Application of the Guidelines for Managing Regional Anesthesia in the Patient Receiving Antithrombotic or Thrombolytic Therapy.  Anesthesiology 124(1):186-98

Tabing AK; Ehrenfeld JM; Wanderer JP, 2016. In reply: Observational study of prolonged times to tracheal extubation.  Can J Anaesth 63(1):117-8

Gruss C; Terekhov MA; Ehrenfeld JM; Kunic RJ; Wanderer JP, 2016. Estimating virtual neck circumference for preoperative STOP-BANG assessment: a retrospective cohort study.  Can J Anaesth 63(1):120-2

Greenberg SE; VanHouten JP; Lakomkin N; Ehrenfeld J; Jahangir AA; Boyce RH; Obremksey WT; Sethi MK, 2016. Does Admission to Medicine or Orthopaedics Impact a Geriatric Hip Patient's Hospital Length of Stay?  J Orthop Trauma 30(2):95-9

Avilucea FR; Sathiyakumar V; Greenberg SE; Ghiam M; Thakore RV; Francois E; Benvenuti MA; Siuta M; Smith AK; Ehrenfeld JM; Evans JM; Obremskey WT; Sethi MK, 2016. Open distal tibial shaft fractures: a retrospective comparison of medial plate versus nail fixation.  Eur J Trauma Emerg Surg 42(1):101-6

Mitchell PM; Corrigan CM; Patel NA; Silverberg AJ; Greenberg SE; Thakore RV; Obremskey WT; Ehrenfeld JM; Evans JM; Sethi MK, 2016. 13-Year experience in external fixation of the pelvis: complications, reduction and removal.  Eur J Trauma Emerg Surg 42(1):91-6

Semler MW; Rice TW; Shaw AD; Siew ED; Self WH; Kumar AB; Byrne DW; Ehrenfeld JM; Wanderer JP, 2016. Identification of Major Adverse Kidney Events Within the Electronic Health Record.  J Med Syst 40(7):167

Tabing AK; Ehrenfeld JM; Wanderer JP, 2016. In reply: Sevoflurane or desflurane: Which one is more expensive? Limiting the accessibility of cost-prohibitive drugs: The story is incomplete.  Can J Anaesth 63(3):361

Kappen TH; Wanderer JP; Ehrenfeld JM; Weinger MB, 2016. Is Intraoperative Hypotension Truly a Too Simple Problem for Useful Decision Support?  Anesth Analg 123(3):792-3

House LM; Marolen KN; St Jacques PJ; McEvoy MD; Ehrenfeld JM, 2016. Surgical Apgar score is associated with myocardial injury after noncardiac surgery.  J Clin Anesth 34:395-402

Terekhov MA; Ehrenfeld JM; Dutton RP; Guillamondegui OD; Martin BJ; Wanderer JP, 2016. Intraoperative Care Transitions Are Not Associated with Postoperative Adverse Outcomes.  Anesthesiology 125(4):690-9

House LM 2nd; Calloway NH; Sandberg WS; Ehrenfeld JM, 2016. Prolonged patient emergence time among clinical anesthesia resident trainees.  J Anaesthesiol Clin Pharmacol 32(4):446-452

Hund HC; Rice MJ; Ehrenfeld J, 2016. An Evaluation of the State of Neuromuscular Blockade Monitoring Devices.  J Med Syst 40(12):281

Wanderer JP; Nelson SE; Ehrenfeld JM; Monahan S; Park S, 2016. Clinical Data Visualization: The Current State and Future Needs.  J Med Syst 40(12):275

Kummerow Broman K; Hayes RM; Kripalani S; Vasilevskis EE; Phillips SE; Ehrenfeld JM; Holzman MD; Sharp KW; Pierce RA; Nealon WH; Poulose BK, 2016. Interhospital transfer for acute surgical care: does delay matter?  Am J Surg 212(5):823-830

Humble SS; Wilson LD; McKenna JW; Leath TC; Song Y; Davidson MA; Ehrenfeld JM; Guillamondegui OD; Pandharipande PP; Patel MB, 2016. Tracheostomy risk factors and outcomes after severe traumatic brain injury.  Brain Inj 30(13-14):1642-1647

Wanderer JP; Ehrenfeld JM, 2016. Toward External Validation and Routine Clinical Use of the American College of Surgeons NSQIP Surgical Risk Calculator.  J Am Coll Surg 223(4):674

Edmiston EK; Donald CA; Sattler AR; Peebles JK; Ehrenfeld JM; Eckstrand KL, 2016. Opportunities and Gaps in Primary Care Preventative Health Services for Transgender Patients: A Systemic Review.  Transgend Health 1(1):216-230

Broman KK; Poulose BK; Phillips SE; Ehrenfeld JM; Sharp KW; Pierce RA; Holzman MD, 2016. Unnecessary Transfers for Acute Surgical Care: Who and Why?  Am Surg 82(8):672-8

Kappen TH; Wanderer JP; Peelen LM; Moons KG; Ehrenfeld JM, 2016. Prediction Model for In-hospital Mortality Should Accurately Predict the Risks of Patients Who Are Truly at Risk.  Anesthesiology 125(4):815-6

Bulka CM; Terekhov MA; Martin BJ; Dmochowski RR; Hayes RM; Ehrenfeld JM, 2016. Nondepolarizing Neuromuscular Blocking Agents, Reversal, and Risk of Postoperative Pneumonia.  Anesthesiology 125(4):647-55

Sathiyakumar V; Estevez-Ordonez D; Thakore RV; Lee YM; Ehrenfeld JM; Obremskey WT; Sethi MK, 2016. American Society of Anesthesiologists Score as a Predictive Tool to Optimize Blood Ordering for Intraoperative Transfusion in Orthopaedic Trauma Cases.  J Surg Orthop Adv 25(2):105-9

Woolard AA; Ehrenfeld JM; Eagle SS; Wanderer JP, 2016. A retrospective study showing the extent of compliance with perioperative guidelines in patients with coronary stents with regard to double antiplatelet therapy.  J Clin Anesth 33:179-84

Fabbri D; Ehrenfeld JM, 2016. Hands Free Automatic Clinical Care Documentation: Opportunities for Motion Sensors and Cameras.  J Med Syst 40(10):213

Ehrenfeld J; Gridley S, 2016. Education Creates Welcoming Environment for Transgender Patients.  ED Manag 28(8):90-3

Ehrenfeld JM; Wanderer JP, 2015. The limitations of manually entered data in acute care environments.  Can J Anaesth 62(3):327-8

Bulka CM; Shotwell MS; Ehrenfeld JM, 2015. Reply to Dr Bhatia.  Reg Anesth Pain Med 40(1):86-7

Wanderer JP; Shi Y; Schildcrout JS; Ehrenfeld JM; Epstein RH, 2015. Supervising anesthesiologists cannot be effectively compared according to their patients' postanesthesia care unit admission pain scores.  Anesth Analg 120(4):923-32

Mathews L; Kla KM; Marolen KN; Sandberg WS; Ehrenfeld JM, 2015. Measuring and Improving First Case On-Time Starts and Analysis of Factors Predicting Delay in Neurosurgical Operating Rooms.  J Neurosurg Anesthesiol 27(3):203-8

Thakore RV; Greenberg SE; Bulka CM; Ehrenfeld JM; Obremskey WT; Sethi MK, 2015. Geographic variations in hospital charges and Medicare payments for major joint arthroplasty.  J Arthroplasty 30(5):728-32

Thakore RV; Foxx AM; Lang MF; Sathiyakumar V; Obremskey WT; Boyce RH; Ehrenfeld JM; Sethi MK, 2015. Operative intervention for geriatric hip fracture: does type of surgery affect hospital length of stay?  Am J Orthop (Belle Mead NJ) 44(5):228-32

Lilot M; Ehrenfeld JM; Lee C; Harrington B; Cannesson M; Rinehart J, 2015. Variability in practice and factors predictive of total crystalloid administration during abdominal surgery: retrospective two-centre analysis.  Br J Anaesth 114(5):767-76

Whiting PS; Greenberg SE; Thakore RV; Alamanda VK; Ehrenfeld JM; Obremskey WT; Jahangir A; Sethi MK, 2015. What factors influence follow-up in orthopedic trauma surgery?  Arch Orthop Trauma Surg 135(3):321-7

Kumar AB; Shi Y; Shotwell MS; Richards J; Ehrenfeld JM, 2015. Hypernatremia is a significant risk factor for acute kidney injury after subarachnoid hemorrhage: a retrospective analysis.  Neurocrit Care 22(2):184-91

Ehrenfeld JM, 2015. The current and future needs of our medical systems.  J Med Syst 39(2):16

Johnson DJ; Greenberg SE; Sathiyakumar V; Thakore R; Ehrenfeld JM; Obremskey WT; Sethi MK, 2015. Relationship between the Charlson Comorbidity Index and cost of treating hip fractures: implications for bundled payment.  J Orthop Traumatol 16(3):209-13

Malapero RJ; Gabriel RA; Gimlich R; Ehrenfeld JM; Philip BK; Bates DW; Urman RD, 2015. An anesthesia medication cost scorecard--concepts for individualized feedback.  J Med Syst 39(5):48

Rooks HJ; Anthony JR; Sexton KW; Marshall AP; Guillamondegui OD; Ehrenfeld JM; Shack RB; Thayer WP, 2015. Transfers for Hand Surgery Correlate with Increased Reoperations for Complications.  Am Surg 81(11):1177-81

Wanderer JP; Ehrenfeld JM; Epstein RH; Kor DJ; Bartz RR; Fernandez-Bustamante A; Vidal Melo MF; Blum JM, 2015. Temporal trends and current practice patterns for intraoperative ventilation at U.S. academic medical centers: a retrospective study.  BMC Anesthesiol 15:40

Baucom RB; Phillips SE; Ehrenfeld JM; Muldoon RL; Poulose BK; Herline AJ; Wise PE; Geiger TM, 2015. Association of Perioperative Hypothermia During Colectomy With Surgical Site Infection.  JAMA Surg 150(6):570-5

Starnes JR; Wanderer JP; Ehrenfeld JM, 2015. Metadata from data: identifying holidays from anesthesia data.  J Med Syst 39(5):44

Hong TS; Bush EC; Hauenstein MF; Lafontant A; Li C; Wanderer JP; Ehrenfeld JM, 2015. A hand hygiene compliance check system: brief communication on a system to improve hand hygiene compliance in hospitals and reduce infection.  J Med Syst 39(6):69

Jann JT; Edmiston EK; Ehrenfeld JM, 2015. Important Considerations for Addressing LGBT Health Care Competency.  Am J Public Health 105(11):e8

Wanderer JP; Gruss CL; Ehrenfeld JM, 2015. Using Visual Analytics to Determine the Utilization of Preoperative Anesthesia Assessments.  Appl Clin Inform 6(4):629-37

Levin MA; Wanderer JP; Ehrenfeld JM, 2015. Data, Big Data, and Metadata in Anesthesiology.  Anesth Analg 121(6):1661-7

Thakore RV; Greenberg SE; Shi H; Foxx AM; Francois EL; Prablek MA; Nwosu SK; Archer KR; Ehrenfeld JM; Obremskey WT; Sethi MK, 2015. Surgical site infection in orthopedic trauma: A case-control study evaluating risk factors and cost.  J Clin Orthop Trauma 6(4):220-6

Donald C; Ehrenfeld JM, 2015. The Opportunity for Medical Systems to Reduce Health Disparities Among Lesbian, Gay, Bisexual, Transgender and Intersex Patients.  J Med Syst 39(11):178

Sathiyakumar V; Shi H; Thakore RV; Lee YM; Joyce D; Ehrenfeld J; Obremskey WT; Sethi MK, 2015. Isolated sacral injuries: Postoperative length of stay, complications, and readmission.  World J Orthop 6(8):629-35

Ihejirika RC; Thakore RV; Sathiyakumar V; Ehrenfeld JM; Obremskey WT; Sethi MK, 2015. An assessment of the inter-rater reliability of the ASA physical status score in the orthopaedic trauma population.  Injury 46(4):542-6

Jering MZ; Marolen KN; Shotwell MS; Denton JN; Sandberg WS; Ehrenfeld JM, 2015. Combining the ASA Physical Classification System and Continuous Intraoperative Surgical Apgar Score Measurement in Predicting Postoperative Risk.  J Med Syst 39(11):147

Terekhov MA; Ehrenfeld JM; Wanderer JP, 2015. Preoperative Surgical Risk Predictions Are Not Meaningfully Improved by Including the Surgical Apgar Score: An Analysis of the Risk Quantification Index and Present-On-Admission Risk Models.  Anesthesiology 123(5):1059-66

Lubrano M; Wanderer JP; Ehrenfeld JM, 2015. Long-Term Opioid Therapy for Chronic Pain.  Ann Intern Med 163(2):147

Ousley J; Baucom RB; Stewart MK; Phillips SE; Holzman MD; Ehrenfeld JM; Sharp KW; Nealon WH; Poulose BK, 2015. Previous Methicillin-Resistant Staphylococcus aureus Infection Independent of Body Site Increases Odds of Surgical Site Infection after Ventral Hernia Repair.  J Am Coll Surg 221(2):470-7

Tabing AK; Ehrenfeld JM; Wanderer JP, 2015. Limiting the accessibility of cost-prohibitive drugs reduces overall anesthetic drug costs: a retrospective before and after analysis.  Can J Anaesth 62(10):1045-54

Starnes JR; McEvoy MD; Ehrenfeld JM; Sandberg WS; Wanderer JP, 2015. Automated Case Cancellation Review System Improves Systems-Based Practice.  J Med Syst 39(11):134

Semler MW; Rice TW; Ehrenfeld JM, 2015. Leveraging Clinical Informatics in the Conduct of Clinical Trials.  J Med Syst 39(10):112

Barocas DA; Kulahalli CS; Ehrenfeld JM; Kapu AN; Penson DF; You CC; Weavind L; Dmochowski R, 2014. Benchmarking the use of a rapid response team by surgical services at a tertiary care hospital.  J Am Coll Surg 218(1):66-72

Dageforde LA; Petersen AW; Feurer ID; Cavanaugh KL; Harms KA; Ehrenfeld JM; Moore DE, 2014. Health literacy of living kidney donors and kidney transplant recipients.  Transplantation 98(1):88-93

Corey JM; Bulka CM; Ehrenfeld JM, 2014. Is regional anesthesia associated with reduced PACU length of stay?: A retrospective analysis from a tertiary medical center.  Clin Orthop Relat Res 472(5):1427-33

Wagner CE; Bick JS; Johnson D; Ahmad R; Han X; Ehrenfeld JM; Schildcrout JS; Pretorius M, 2014. Etomidate use and postoperative outcomes among cardiac surgery patients.  Anesthesiology 120(3):579-89

McDonald MR; Sathiyakumar V; Apfeld JC; Hooe B; Ehrenfeld J; Obremskey WT; Sethi MK, 2014. Predictive factors of hospital length of stay in patients with operatively treated ankle fractures.  J Orthop Traumatol 15(4):255-8

Kay HF; Sathiyakumar V; Yoneda ZT; Lee YM; Jahangir AA; Ehrenfeld JM; Obremskey WT; Apfeld JC; Sethi MK, 2014. The effects of American Society of Anesthesiologists physical status on length of stay and inpatient cost in the surgical treatment of isolated orthopaedic fractures.  J Orthop Trauma 28(7):e153-9

Ehrenfeld JM, 2014. Systems, technology and the critical need for rigorous evaluation.  J Med Syst 38(1):9998

McDonald MR; Bulka CM; Thakore RV; Obremskey WT; Ehrenfeld JM; Jahangir AA; Sethi MK, 2014. Ankle radiographs in the early postoperative period: do they matter?  J Orthop Trauma 28(9):538-41

Ehrenfeld JM; McEvoy MD; Furman WR; Snyder D; Sandberg WS, 2014. Automated near-real-time clinical performance feedback for anesthesiology residents: one piece of the milestones puzzle.  Anesthesiology 120(1):172-84

Wanderer J; Mishra P; Ehrenfeld J, 2014. Innovation & market consolidation among electronic health record vendors: an acute need for regulation.  J Med Syst 38(1):8

Kodali BS; Kim KD; Flanagan H; Ehrenfeld JM; Urman RD, 2014. Variability of subspecialty-specific anesthesia-controlled times at two academic institutions.  J Med Syst 38(2):11

Wanderer JP; Ehrenfeld JM; Sandberg WS; Epstein RH, 2014. Reply: To PMID 23897492.  Can J Anaesth 61(1):85

Stol IS; Ehrenfeld JM; Epstein RH, 2014. Technology diffusion of anesthesia information management systems into academic anesthesia departments in the United States.  Anesth Analg 118(3):644-50

Kay HF; Sathiyakumar V; Archer KR; Mathis SL; Apfeld JC; Lee YM; Jahangir AA; Ehrenfeld J; Obremskey WT; Sethi MK, 2014. The homeless orthopaedic trauma patient: follow-up, emergency room usage, and complications.  J Orthop Trauma 28(6):e128-32

Hand WR; Bridges KH; Stiegler MP; Schell RM; DiLorenzo AN; Ehrenfeld JM; Nietert PJ; McEvoy MD, 2014. Effect of a cognitive aid on adherence to perioperative assessment and management guidelines for the cardiac evaluation of noncardiac surgical patients.  Anesthesiology 120(6):1339-49, quiz 1349-53

Baucom RB; Phillips SE; Ehrenfeld JM; Holzman MD; Nealon WH; Sharp KW; Kaiser JL; Poulose BK, 2014. Defining intraoperative hypothermia in ventral hernia repair.  J Surg Res 190(1):385-90

Devin CJ; Lee DS; Armaghani SJ; Bible J; Shau DN; Martin PR; Ehrenfeld JM, 2014. Approach to pain management in chronic opioid users undergoing orthopaedic surgery.  J Am Acad Orthop Surg 22(10):614-22

Bennett JM; Ehrenfeld JM; Markham L; Eagle SS, 2014. Anesthetic management and outcomes for patients with pulmonary hypertension and intracardiac shunts and Eisenmenger syndrome: a review of institutional experience.  J Clin Anesth 26(4):286-93

Chester SD; Ehrenfeld JM; Eckstrand KL, 2014. Results of an Institutional LGBT Climate Survey at an Academic Medical Center.  LGBT Health 1(4):327-30

Bulka CM; Wanderer JP; Ehrenfeld JM, 2014. Anesthesia technique and outcomes after hip fracture surgery.  JAMA 312(17):1801

Wanderer JP; Shaw AD; Ehrenfeld JM, 2014. Automated data transmission for the Society of Thoracic Surgeons' adult cardiac anesthesia module.  Anesth Analg 119(5):1221-2

Gabriel RA; Gimlich R; Ehrenfeld JM; Urman RD, 2014. Operating room metrics score card-creating a prototype for individualized feedback.  J Med Syst 38(11):144

Schildcrout JS; Han X; Ehrenfeld JM; Wagner CE; Pretorius M, 2014. In reply.  Anesthesiology 121(5):1128-30

Epstein RH; Dexter F; Lopez MG; Ehrenfeld JM, 2014. Anesthesiologist staffing considerations consequent to the temporal distribution of hypoxemic episodes in the postanesthesia care unit.  Anesth Analg 119(6):1322-33

Tolleson C; Stroh J; Ehrenfeld J; Neimat J; Konrad P; Phibbs F, 2014. The factors involved in deep brain stimulation infection: a large case series.  Stereotact Funct Neurosurg 92(4):227-33

Peccora CD; Gimlich R; Cornell RP; Vacanti CA; Ehrenfeld JM; Urman RD, 2014. Anesthesia report card - a customizable tool for performance improvement.  J Med Syst 38(9):105

Bulka CM; Shotwell MS; Gupta RK; Sandberg WS; Ehrenfeld JM, 2014. Regional anesthesia, time to hospital discharge, and in-hospital mortality: a propensity score matched analysis.  Reg Anesth Pain Med 39(5):381-6

Shinall MC Jr; Ehrenfeld JM; Guillamondegui OD, 2014. Religiously affiliated intensive care unit patients receive more aggressive end-of-life care.  J Surg Res 190(2):623-7

Rothman BS; Ehrenfeld JM, 2014. Paging doctor, emergency?  Anesth Analg 119(1):4-6

Mirzakhani H; Nozari A; Ehrenfeld JM; Peterfreund R; Szabo M; Walsh JL; Jiang Y; Sandberg W; Rosow C; Wang J, 2013. Case report: profound hypotension after anesthetic induction with propofol in patients treated with rifampin.  Anesth Analg 117(1):61-4

Bateman BT; Mhyre JM; Ehrenfeld J; Kheterpal S; Abbey KR; Argalious M; Berman MF; Jacques PS; Levy W; Loeb RG; Paganelli W; Smith KW; Wethington KL; Wax D; Pace NL; Tremper K; Sandberg WS, 2013. The risk and outcomes of epidural hematomas after perioperative and obstetric epidural catheterization: a report from the Multicenter Perioperative Outcomes Group Research Consortium.  Anesth Analg 116(6):1380-5

Moore DC; Yoneda ZT; Powell M; Howard DL; Jahangir AA; Archer KR; Ehrenfeld JM; Obremskey WT; Sethi MK, 2013. Gunshot victims at a major level I trauma center: a study of 343,866 emergency department visits.  J Emerg Med 44(3):585-91

Wanderer JP; Ehrenfeld JM; Sandberg WS; Rathmell JP, 2013. Infographics in anesthesiology: a volatile tale of two institutions.  Anesthesiology 118(6):1456

Backman ES; Triant VA; Ehrenfeld JM; Lu Z; Arpino P; Losina E; Gandhi RT, 2013. Safety of midazolam for sedation of HIV-positive patients undergoing colonoscopy.  HIV Med 14(6):379-84

Ehrenfeld JM, 2013. Which is the original and which is the modified rapid sequence induction and intubation? Let history be the judge!---author's reply.  Anesth Analg 116(1):265

Alamanda VK; Delisca GO; Mathis SL; Archer KR; Ehrenfeld JM; Miller MW; Homlar KC; Halpern JL; Schwartz HS; Holt GE, 2013. The financial burden of reexcising incompletely excised soft tissue sarcomas: a cost analysis.  Ann Surg Oncol 20(9):2808-14

Blum JM; Stentz MJ; Maile MD; Jewell E; Raghavendran K; Engoren M; Ehrenfeld JM, 2013. Automated alerting and recommendations for the management of patients with preexisting hypoxia and potential acute lung injury: a pilot study.  Anesthesiology 119(2):295-302

Kynes JM; Schildcrout JS; Hickson GB; Pichert JW; Han X; Ehrenfeld JM; Westlake MW; Catron T; Jacques PS, 2013. An analysis of risk factors for patient complaints about ambulatory anesthesiology care.  Anesth Analg 116(6):1325-32

Wanderer JP; Ehrenfeld JM, 2013. Clinical decision support for perioperative information management systems.  Semin Cardiothorac Vasc Anesth 17(4):288-93

Tiwari V; Dexter F; Rothman BS; Ehrenfeld JM; Epstein RH, 2013. Explanation for the near-constant mean time remaining in surgical cases exceeding their estimated duration, necessary for appropriate display on electronic white boards.  Anesth Analg 117(2):487-93

Wanderer JP; Ehrenfeld JM; Sandberg WS; Epstein RH, 2013. The changing scope of difficult airway management.  Can J Anaesth 60(10):1022-4

Ehrenfeld JM; Dexter F; Rothman BS; Johnson AM; Epstein RH, 2013. Case cancellation rates measured by surgical service differ whether based on the number of cases or the number of minutes cancelled.  Anesth Analg 117(3):711-6

Ehrenfeld JM; Agarwal AK; Henneman JP; Sandberg WS, 2013. Estimating the incidence of suspected epidural hematoma and the hidden imaging cost of epidural catheterization: a retrospective review of 43,200 cases.  Reg Anesth Pain Med 38(5):409-414

Bulka CM; Cassedy EA; Sandberg WS; Ehrenfeld JM, 2013. A survey of modified rapid-sequence induction and intubation in Canadian academic centers.  J Clin Anesth 25(6):515-6

Phitayakorn R; Morales-Garcia D; Wanderer J; Lubitz CC; Gaz RD; Stephen AE; Ehrenfeld JM; Daniels GH; Hodin RA; Parangi S, 2013. Surgery for Graves' disease: a 25-year perspective.  Am J Surg 206(5):669-73

Wanderer JP; Blum JM; Ehrenfeld JM, 2013. Intraoperative low-tidal-volume ventilation.  N Engl J Med 369(19):1861

Epstein RH; St Jacques P; Stockin M; Rothman B; Ehrenfeld JM; Denny JC, 2013. Automated identification of drug and food allergies entered using non-standard terminology.  J Am Med Inform Assoc 20(5):962-8

Ehrenfeld JM; Dexter F; Rothman BS; Minton BS; Johnson D; Sandberg WS; Epstein RH, 2013. Lack of utility of a decision support system to mitigate delays in admission from the operating room to the postanesthesia care unit.  Anesth Analg 117(6):1444-52

Geiger TM; Horst S; Muldoon R; Wise PE; Enrenfeld J; Poulose B; Herline AJ, 2012. Perioperative core body temperatures effect on outcome after colorectal resections.  Am Surg 78(5):607-12

Ehrenfeld JM; Cassedy EA; Forbes VE; Mercaldo ND; Sandberg WS, 2012. Modified rapid sequence induction and intubation: a survey of United States current practice.  Anesth Analg 115(1):95-101

Kadry B; Feaster WW; Macario A; Ehrenfeld JM, 2012. Anesthesia information management systems: past, present, and future of anesthesia records.  Mt Sinai J Med 79(1):154-65

Ehrenfeld JM; Henneman JP; Peterfreund RA; Sheehan TD; Xue F; Spring S; Sandberg WS, 2012. Ongoing professional performance evaluation (OPPE) using automatically captured electronic anesthesia data.  Jt Comm J Qual Patient Saf 38(2):73-80

Young MJ; Ehrenfeld JM, 2012. Knotting of an orogastric tube around an endotracheal tube.  J Clin Anesth 24(3):254-5

Garcia AE; Bonnaig JV; Yoneda ZT; Richards JE; Ehrenfeld JM; Obremskey WT; Jahangir AA; Sethi MK, 2012. Patient variables which may predict length of stay and hospital costs in elderly patients with hip fracture.  J Orthop Trauma 26(11):620-3

Lonergan DF; Ehrenfeld JM, 2012. Advancement of information technology in outpatient and perioperative settings to support patient care and translational research.  Pain Manag 2(5):445-9

Hill JB; Patel A; Del Corral GA; Sexton KW; Ehrenfeld JM; Guillamondegui OD; Shack RB, 2012. Preoperative anemia predicts thrombosis and free flap failure in microvascular reconstruction.  Ann Plast Surg 69(4):364-7

Wanderer JP; Rao AV; Rothwell SH; Ehrenfeld JM, 2012. Comparing two anesthesia information management system user interfaces: a usability evaluation.  Can J Anaesth 59(11):1023-31

Grosse-Sundrup M; Henneman JP; Sandberg WS; Bateman BT; Uribe JV; Nguyen NT; Ehrenfeld JM; Martinez EA; Kurth T; Eikermann M, 2012. Intermediate acting non-depolarizing neuromuscular blocking agents and risk of postoperative respiratory complications: prospective propensity score matched cohort study.  BMJ 345:e6329

Schwenk ES; Mraovic B; Maxwell RP; Kim GS; Ehrenfeld JM; Epstein RH, 2012. Root causes of intraoperative hypoglycemia: a case series.  J Clin Anesth 24(8):625-30

Ehrenfeld JM; Rehman MA, 2011. Anesthesia information management systems: a review of functionality and installation considerations.  J Clin Monit Comput 25(1):71-9

Wuerz TH; Regenbogen SE; Ehrenfeld JM; Malchau H; Rubash HE; Gawande AA; Kent DM, 2011. The Surgical Apgar Score in hip and knee arthroplasty.  Clin Orthop Relat Res 469(4):1119-26

Chau A; Ehrenfeld JM, 2011. Using real-time clinical decision support to improve performance on perioperative quality and process measures.  Anesthesiol Clin 29(1):57-69

Ehrenfeld JM; Epstein RH; Bader S; Kheterpal S; Sandberg WS, 2011. Automatic notifications mediated by anesthesia information management systems reduce the frequency of prolonged gaps in blood pressure documentation.  Anesth Analg 113(2):356-63

Hobai IA; Gauran C; Chitilian HV; Ehrenfeld JM; Levinson J; Sandberg WS, 2011. The management and outcome of documented intraoperative heart rate-related electrocardiographic changes.  J Cardiothorac Vasc Anesth 25(5):791-8

Wanderer JP; Sandberg WS; Ehrenfeld JM, 2011. Real-time alerts and reminders using information systems.  Anesthesiol Clin 29(3):389-96

Ehrenfeld JM; Funk LM; Van Schalkwyk J; Merry AF; Sandberg WS; Gawande A, 2010. The incidence of hypoxemia during surgery: evidence from two institutions.  Can J Anaesth 57(10):888-97

Ehrenfeld JM; Mulvoy W; Sandberg WS, 2010. Performance comparison of right- and left-sided double-lumen tubes among infrequent users.  J Cardiothorac Vasc Anesth 24(4):598-601

Ehrenfeld JM; Seim AR; Berger DL; Sandberg WS, 2009. Implementation of a direct-from-recovery-room discharge pathway: a process improvement effort.  Surg Innov 16(3):258-65

Epstein RH; Dexter F; Ehrenfeld JM; Sandberg WS, 2009. Implications of event entry latency on anesthesia information management decision support systems.  Anesth Analg 108(3):941-7

Regenbogen SE; Ehrenfeld JM; Lipsitz SR; Greenberg CC; Hutter MM; Gawande AA, 2009. Utility of the surgical apgar score: validation in 4119 patients.  Arch Surg 144(1):30-6; discussion 37

Ehrenfeld JM; Walsh JL; Sandberg WS, 2008. Right- and left-sided Mallinckrodt double-lumen tubes have identical clinical performance.  Anesth Analg 106(6):1847-52

Sandberg WS; Sandberg EH; Seim AR; Anupama S; Ehrenfeld JM; Spring SF; Walsh JL, 2008. Real-time checking of electronic anesthesia records for documentation errors and automatically text messaging clinicians improves quality of documentation.  Anesth Analg 106(1):192-201, table of contents

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