Samuels JM, Carmichael H, McIntyre R Jr, Urban S, Ballow S, Dirks RC, Spalding MC, LaRiccia A, Farrell MS, Stein DM, Truitt MS, Grossman Verner HM, Mentzer CJ, Mack TJ, Ball CG, Mukherjee K, Mladenov G, Haase DJ, Abdou H, Schroeppel TJ, Rodriquez J, Nahmias J, Tay E, Bala M, Keric N, Crigger M, Dhillon NK, Ley EJ, Egodage T, Williamson J, Cardenas TC, Eugene V, Patel K, Costello K, Bonne S, Elgammal FS, Dorlac W, Pederson C, Burlew CC, Werner NL, Haan JM, Lightwine K, Semon G, Spoor K, Velopulos C, Harmon LA. An observation-first strategy for liver injuries with "blush" on computed tomography is safe and effective. J Trauma Acute Care Surg. 2023 Feb 1;94(2):281-287. PubMed PMID: 36149844
Henkind R, Carmichael H, Stearns DR, Thomas M, Abbitt D, Myers QWO, Velopulos CG. Suicide Among Persons Experiencing Homelessness. J Surg Res. 2022 Dec 30;284:213-220. [Epub ahead of print] PubMed PMID: 36587481
Urban S, Carmichael H, Vasilatos A, Moe M, Dumond R, Kennard L, Vega S, Krell R, Cripps MW, Velopulos C. How Do Hospital-Specific Data Dictionaries Impact Competency Level With Data Collection: A National Survey. J Trauma Nurs. 2022 Nov-Dec 01;29(6):305-311. PubMed PMID: 36350169
Samuels J, Carmichael H, Hazel K, Velopulos C, Rothchild K, Schoen J. Chronic psychiatric diagnoses increase emergency department utilization following bariatric surgery. Surg Endosc. 2022 Jul 25. [Epub ahead of print] PubMed PMID: 35879568
Carmichael H, Samuels JM, Velopulos CG, Jones EL. Geographic distribution of colonoscopy providers in the United States: An analysis of medicare claims data. Surg Endosc. 2022 Oct;36(10):7673-7678. PubMed PMID: 35729404
Fouché TW, Zakrison TL, Schneider JA, Kaufman EJ, Plackett TP, Velopulos C, Slidell MB, Voisin D, Hampton DA, Carmichael HE, Valdés DM, Parker C, Ross B, Chaudhary M, Cirone J. Demographic and Regional Factors Associated With Reporting Homicides of Transgender People in the United States. J Surg Res. 2022 Nov;279:72-76. PubMed PMID: 35724545
Dyas AR, Carmichael H, Bronsert MR, Henderson WG, Madsen HJ, Colborn KL, Velopulos CG, Meguid RA. Does Adding a Measure of Social Vulnerability to a Surgical Risk Calculator Improve Its Performance?. J Am Coll Surg. 2022 Jun 1;234(6):1137-1146. PubMed PMID: 35703812
Urban S, Carmichael H, Vasilatos A, Moe M, Dumond R, Kennard L, Vega S, Krell R, Cripps MW, Velopulos C. Trauma Registry Data Collection Practices and the Impact of Hospital Data Dictionaries: A National Survey. J Trauma Nurs. 2022 May-Jun 01;29(3):105-110. PubMed PMID: 35536336
Carmichael H, Dyas AR, Bronsert MR, Stearns D, Birnbaum EH, McIntyre RC, Meguid RA, Velopulos CG. Social vulnerability is associated with increased morbidity following colorectal surgery. Am J Surg. 2022 Jul;224(1 Pt A):100-105. PubMed PMID: 35337645
Gonzalez L, Pawlik TM, Kibbe MR, Williams B, Vicente D, O'Leary MP, Velopulos CG, Funk LM. The 2020 Pandemics: Lessons Learned in Academic Surgery and Beyond. J Surg Res. 2022 Aug;276:A1-A6. PubMed PMID: 35314073
Aicher BO, Betancourt-Ramirez A, Grossman MD, Heise H, Schroeppel TJ, Hernandez MC, Zielinski MD, Kongkaewpaisan N, Kaafarani HMA, Wagner A, Grabo D, Scott M, Peck G, Chang G, Matsushima K, Cullinane DC, Cullinane LM, Stocker B, Posluszny J, Simonoski UJ, Catalano RD, Vasileiou G, Yeh DD, Agrawal V, Truitt MS, Pickett M, Dultz L, Muller A, Ong AW, San Roman JL, Barth N, Fackelmayer O, Velopulos CG, Hendrix C, Estroff JM, Gambhir S, Nahmias J, Jeyamurugan K, Bugaev N, O'Meara L, Kufera J, Diaz JJ, Bruns BR. Validation of the American Association for the Surgery of Trauma Emergency General Surgery Grading System for Colorectal Resection: An EAST Multicenter Study. Am Surg. 2022 May;88(5):953-958. PubMed PMID: 35275764
Patten M, Carmichael H, Moore A, Velopulos C. Circumstances of Suicide Among Lesbian, Gay, Bisexual and Transgender Individuals. J Surg Res. 2022 Feb;270:522-529. PubMed PMID: 34808470
Dyas AR, Bronsert MR, Meguid RA, Colborn KL, Lambert-Kerzner A, Hammermeister KE, Rozeboom PD, Velopulos CG, Henderson WG. Using the Surgical Risk Preoperative Assessment System to Define the "High Risk" Surgical Patient. J Surg Res. 2022 Feb;270:394-404. PubMed PMID: 34749120
Moore A, Carmichael H, Velopulos C. Medical Response and Factors Leading to Violent Death in the United States Incarcerated Population. J Surg Res. 2022 Jan;269:234-240. PubMed PMID: 34614456
Carmichael H, Tran B, Velopulos CG. When more is less: Urban disparities in access to surgical care by transportation means. Am J Surg. 2022 Jan;223(1):112-119. PubMed PMID: 34425989
Urban S, Carmichael H, Moe M, Kramer A, Al-Azzawi O, Dumond R, Wright A, McIntyre R Jr, Velopulos C. The Critical Intervention Screen: A Novel Tool to Determine the Use of Lights and Sirens during the Transport of Trauma Patients. Prehosp Emerg Care. 2022 Jul-Aug;26(4):566-572. PubMed PMID: 34313543
Urban S, Carmichael H, Moe M, Kramer A, Al-Azzawi O, Dumond R, Wright A, McIntyre R Jr, Velopulos C. The Critical Intervention Screen: A Novel Tool to Determine the Use of Lights and Sirens during the Transport of Trauma Patients. Prehosp Emerg Care. 2021 Aug 17;:1-7. [Epub ahead of print] PubMed PMID: 34313543
Carmichael H, Wright FL, McIntyre RC, Vogler T, Urban S, Jolley SE, Burnham EL, Firth W, Velopulos CG, Idrovo JP. Early ventilator liberation and decreased sedation needs after tracheostomy in patients with COVID-19 infection. Trauma Surg Acute Care Open. 2021;6(1):e000591. PubMed PMID: 34192162
Estrella JB, Carmichael H, Myers QWO, Lee S, Velopulos CG. Making it Complicated: Does Disparity in Access to Care Lead to More Perforated Appendicitis?. J Surg Res. 2021 Oct;266:405-412. PubMed PMID: 34091088
El Hechi M, Kongkaewpaisan N, Naar L, Aicher B, Diaz J Jr, O'Meara L, Decker C, Rodriquez J, Schroeppel T, Rattan R, Vasileiou G, Yeh DD, Simonoski U, Turay D, Cullinane D, Emmert C, McCrum M, Wall N, Badach J, Goldenberg-Sandau A, Carmichael H, Velopulos C, Choron R, Sakran J, Bekdache K, Black G, Shoultz T, Chadnick Z, Sim V, Madbak F, Steadman D, Camazine M, Zielinski M, Hardman C, Walusimbi M, Kim M, Rodier S, Papadopoulos V, Tsoulfas G, Perez J, Kaafarani HMA. The Emergency Surgery Score accurately predicts the need for postdischarge respiratory and renal support after emergent laparotomies: A prospective EAST multicenter study. J Trauma Acute Care Surg. 2021 Mar 1;90(3):557-564. PubMed PMID: 33507026
Rozeboom PD, Bronsert MR, Henderson WG, Velopulos CG, Colborn KL, Lambert-Kerzner A, McIntyre RC Jr, Meguid RA. The preoperative risk tool SURPAS accurately predicts outcomes in emergency surgery. Am J Surg. 2021 Sep;222(3):643-649. PubMed PMID: 33485618
Carmichael H, Samuels JM, Jamison EC, Bol KA, Coleman JJ, Campion EM, Velopulos CG. Finding the elusive trauma denominator: Feasibility of combining data sets to quantify the true burden of firearm trauma. J Trauma Acute Care Surg. 2021 Mar 1;90(3):466-470. PubMed PMID: 33105286
Cirone J, Keskey R, Hampton D, Slidell M, Crandall M, Rattan R, Velopulos CG, Allen D, Williams BH, Wilson K, Zakrison TL. Recent release from prison - A novel risk factor for intimate partner homicide. J Trauma Acute Care Surg. 2021 Jan 1;90(1):107-112. PubMed PMID: 33003014
El Hechi M, Kongkaewpaisan N, El Moheb M, Aicher B, Diaz J Jr, O'Meara L, Decker C, Rodriquez J, Schroeppel T, Rattan R, Vasileiou G, Yeh DD, Simonosk U, Turay D, Cullinane D, Emmert C, McCrum M, Wall N, Badach J, Goldenberg-Sanda A, Carmichael H, Velopulos C, Choron R, Sakran J, Bekdache K, Black G, Shoultz T, Chadnick Z, Sim V, Madbak F, Steadman D, Camazine M, Zielinski M, Hardman C, Walusimbi M, Kim M, Rodier S, Papadopoulos V, Tsoulfas G, Perez J, Kaafarani H. The emergency surgery score (ESS) and outcomes in elderly patients undergoing emergency laparotomy: A post-hoc analysis of an EAST multicenter study. Am J Surg. 2021 May;221(5):1069-1075. PubMed PMID: 32917366
Hitchman L, Machin M. Impact of COVID-19 on vascular patients worldwide: analysis of the COVIDSurg data. J Cardiovasc Surg (Torino). 2021 Dec;62(6):558-570. PubMed PMID: 35037445
. Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures: an international cohort study. BMJ Open. 2021 Nov 30;11(11):e050830. PubMed PMID: 34848515
. Effects of pre-operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study. Anaesthesia. 2021 Nov;76(11):1454-1464. PubMed PMID: 34371522
. Machine learning risk prediction of mortality for patients undergoing surgery with perioperative SARS-CoV-2: the COVIDSurg mortality score. Br J Surg. 2021 Nov 11;108(11):1274-1292. PubMed PMID: 34227657
. SARS-CoV-2 vaccination modelling for safe surgery to save lives: data from an international prospective cohort study. Br J Surg. 2021 Sep 27;108(9):1056-1063. PubMed PMID: 33761533
. Timing of surgery following SARS-CoV-2 infection: an international prospective cohort study. Anaesthesia. 2021 Jun;76(6):748-758. PubMed PMID: 33690889
Carmichael H, Samuels JM, Jamison EC, Bol KA, Coleman JJ, Campion EM, Velopulos CG. Finding the Elusive Trauma Denominator: Feasibility of Combining Data Sets to Quantify the True Burden of Firearm Trauma. J Trauma Acute Care Surg. 2020 Oct 22. [Epub ahead of print] PubMed PMID: 33105286
Samuels JM, Carmichael H, Kovar A, Urban S, Vega S, Velopulos C, McIntyre RC Jr. Exercise Caution Using Hepatic Angioembolization in the Stable Trauma Patient: In reply to Clements and Colleagues. J Am Coll Surg. 2020 Dec;231(6):778. PubMed PMID: 32972833
El Hechi M, Kongkaewpaisan N, El Moheb M, Aicher B, Diaz J Jr, O'Meara L, Decker C, Rodriquez J, Schroeppel T, Rattan R, Vasileiou G, Yeh DD, Simonosk U, Turay D, Cullinane D, Emmert C, McCrum M, Wall N, Badach J, Goldenberg-Sanda A, Carmichael H, Velopulos C, Choron R, Sakran J, Bekdache K, Black G, Shoultz T, Chadnick Z, Sim V, Madbak F, Steadman D, Camazine M, Zielinski M, Hardman C, Walusimbi M, Kim M, Rodier S, Papadopoulos V, Tsoulfas G, Perez J, Kaafarani H. The emergency surgery score (ESS) and outcomes in elderly patients undergoing emergency laparotomy: A post-hoc analysis of an EAST multicenter study. Am J Surg. 2020 Sep 4. [Epub ahead of print] PubMed PMID: 32917366
Rozeboom PD, Bronsert MR, Velopulos CG, Henderson WG, Colborn KL, Hammermeister KE, Lambert-Kerzner A, Hall MG, McIntyre RC Jr, Meguid RA. A comparison of the new, parsimonious tool Surgical Risk Preoperative Assessment System (SURPAS) to the American College of Surgeons (ACS) risk calculator in emergency surgery. Surgery. 2020 Dec;168(6):1152-1159. PubMed PMID: 32900494
Aicher BO, Hernandez MC, Betancourt-Ramirez A, Grossman MD, Heise H, Schroeppel TJ, Kongkaewpaisan N, Kaafarani HMA, Wagner A, Grabo D, Scott M, Peck G, Chang G, Matsushima K, Cullinane DC, Cullinane LM, Stocker B, Posluszny J, Simonoski UJ, Catalano RD, Vasileiou G, Yeh DD, Agrawal V, Truitt MS, Pickett M, Dultz L, Muller A, Ong AW, San Roman JL, Barth N, Fackelmayer O, Velopulos CG, Hendrix C, Estroff JM, Gambhir S, Nahmias J, Jeyamurugan K, Bugaev N, Portillo V, Carrick MM, O'Meara L, Kufera J, Zielinski MD, Bruns BR. Colorectal resection in emergency general surgery: An EAST multicenter trial. J Trauma Acute Care Surg. 2020 Dec;89(6):1023-1031. PubMed PMID: 32890337
Carmichael H, Moore A, Steward L, Velopulos CG. Disparities in Emergent Versus Elective Surgery: Comparing Measures of Neighborhood Social Vulnerability. J Surg Res. 2020 Aug 7;256:397-403. [Epub ahead of print] PubMed PMID: 32777556
Foster SM, Knight J, Velopulos CG, Bonne S, Joseph D, Santry H, Coleman JJ, Callcut RA. Gender distribution and leadership trends in trauma surgery societies. Trauma Surg Acute Care Open. 2020;5(1):e000433. PubMed PMID: 32518837
Samuels JM, Carmichael H, Kovar A, Urban S, Vega S, Velopulos C, McIntyre RC Jr. Reevaluation of Hepatic Angioembolization for Trauma in Stable Patients: Weighing the Risk. J Am Coll Surg. 2020 Jul;231(1):123-131.e3. PubMed PMID: 32422347
Bernard M, Martin MJ, Corsa J, Robinson B, Zeeshan M, Joseph B, Morris D, Shillinglaw W, Schurr M, Smith T, Lara S, Brown C, Harrell K, Maxwell R, Berndtson AE, Curry T, Kaups K, Dirks R, Rott M, Schroeppel T, Stillman Z, Warriner Z, Inaba K, Burlew C, Robinson C, Jackson R, Dunn J, Chapin T, Wilson A, Moulton S, Phillips R, Shahi N, Urban S, Velopulos C, Davenport D, C Bernard A. Into the wild and on to the table: A Western Trauma Association multicenter analysis and comparison of wilderness falls in rock climbers and nonclimbers. J Trauma Acute Care Surg. 2020 Sep;89(3):570-575. PubMed PMID: 32265389
Kaafarani HMA, Kongkaewpaisan N, Aicher BO, Diaz JJ Jr, O'Meara LB, Decker C, Rodriquez J, Schroeppel T, Rattan R, Vasileiou G, Yeh DD, Simonoski UJ, Turay D, Cullinane DC, Emmert CB, McCrum ML, Wall N, Badach J, Goldenberg-Sandau A, Carmichael H, Velopulos C, Choron R, Sakran JV, Bekdache K, Black G, Shoultz T, Chadnick Z, Sim V, Madbak F, Steadman D, Camazine M, Zielinski MD, Hardman C, Walusimbi M, Kim M, Rodier S, Papadopoulos VN, Tsoulfas G, Perez JM, Velmahos GC. Prospective validation of the Emergency Surgery Score in emergency general surgery: An Eastern Association for the Surgery of Trauma multicenter study. J Trauma Acute Care Surg. 2020 Jul;89(1):118-124. PubMed PMID: 32176177
Carmichael H, Cowan M, McIntyre R, Velopulos C. Disparities in colorectal cancer mortality for rural populations in the United States: Does screening matter?. Am J Surg. 2020 Jun;219(6):988-992. PubMed PMID: 31604486
Carmichael H, Cowan M, McIntyre R, Velopulos C. Disparities in colorectal cancer mortality for rural populations in the United States: Does screening matter?. Am J Surg. 2019 Sep 26. [Epub ahead of print] PubMed PMID: 31604486
Carmichael H, Steward L, Velopulos CG. It doesn't just happen to "Other" people - An exploration of occupation and education level of women who die from intimate partner violence. Am J Surg. 2019 Oct;218(4):744-748. PubMed PMID: 31350003
Noble R, Moore HB, Velopulos CG, Birnbaum E, Vogel JB. Pneumoperitoneum not created equally. J Trauma Acute Care Surg. 2019 Aug;87(2):502-504. PubMed PMID: 31348405
Velopulos CG, Carmichael H, Zakrison TL, Crandall M. Comparison of male and female victims of intimate partner homicide and bidirectionality-an analysis of the national violent death reporting system. J Trauma Acute Care Surg. 2019 Aug;87(2):331-336. PubMed PMID: 31348402
Moore AN, Carmichael H, Steward L, Velopulos CG. Cholecystectomy: Exploring the Interplay Between Access to Care and Emergent Presentation. J Surg Res. 2019 Dec;244:352-357. PubMed PMID: 31323390
Carmichael H, Moore A, Steward L, Velopulos CG. Using the Social Vulnerability Index to Examine Local Disparities in Emergent and Elective Cholecystectomy. J Surg Res. 2019 Nov;243:160-164. PubMed PMID: 31177035
Abolarin J, McLafferty L, Carmichael H, Velopulos CG. Family Can Hurt You the Most: Examining Perpetrators in Multiple Casualty Events. J Surg Res. 2019 Oct;242:172-176. PubMed PMID: 31078902
Carmichael H, Steward L, Peltz ED, Wright FL, Velopulos CG. Preventable death and interpersonal violence in the United States: Who can be saved?. J Trauma Acute Care Surg. 2019 Jul;87(1):200-204. PubMed PMID: 31045724
Velopulos CG, Carmichael H, Zakrison TL, Crandall M. COMPARISON OF MALE AND FEMALE VICTIMS OF INTIMATE PARTNER HOMICIDE AND BIDIRECTIONALITY- AN ANALYSIS OF THE NATIONAL VIOLENT DEATH REPORTING SYSTEM. J Trauma Acute Care Surg. 2019 Apr 1. [Epub ahead of print] PubMed PMID: 30939583
Rushing A, Bugaev N, Jones C, Como JJ, Fox N, Cripps M, Robinson B, Velopulos C, Haut ER, Narayan M. Management of acute appendicitis in adults: A practice management guideline from the Eastern Association for the Surgery of Trauma. J Trauma Acute Care Surg. 2019 Jul;87(1):214-224. PubMed PMID: 30908453
Carmichael H, Wiktor AJ, McIntyre RC, Lambert Wagner A, Velopulos CG. Regional disparities in access to verified burn center care in the United States. J Trauma Acute Care Surg. 2019 Jul;87(1):111-116. PubMed PMID: 30865160
Heelan Gladden AA, Peltz ED, McIntyre RC Jr, Vega S, Krell R, Velopulos C, Ferrigno L, Wright FL. Effect of Pre-Hospital Use of the Assessment of Blood Consumption Score and Pre-Thawed Fresh Frozen Plasma on Resuscitation and Trauma Mortality. J Am Coll Surg. 2019 Feb;228(2):141-147. PubMed PMID: 30476549
Carmichael H, Steward L, Velopulos CG. It doesn't just happen to "Other" people - An exploration of occupation and education level of women who die from intimate partner violence. Am J Surg. 2019 Oct;218(4):744-748. PubMed PMID: 31350003
Noble R, Moore HB, Velopulos CG, Birnbaum E, Vogel JB. Pneumoperitoneum not created equally. J Trauma Acute Care Surg. 2019 Aug;87(2):502-504. PubMed PMID: 31348405
Velopulos CG, Carmichael H, Zakrison TL, Crandall M. Comparison of male and female victims of intimate partner homicide and bidirectionality-an analysis of the national violent death reporting system. J Trauma Acute Care Surg. 2019 Aug;87(2):331-336. PubMed PMID: 31348402
Moore AN, Carmichael H, Steward L, Velopulos CG. Cholecystectomy: Exploring the Interplay Between Access to Care and Emergent Presentation. J Surg Res. 2019 Dec;244:352-357. PubMed PMID: 31323390
Carmichael H, Moore A, Steward L, Velopulos CG. Using the Social Vulnerability Index to Examine Local Disparities in Emergent and Elective Cholecystectomy. J Surg Res. 2019 Nov;243:160-164. PubMed PMID: 31177035
Abolarin J, McLafferty L, Carmichael H, Velopulos CG. Family Can Hurt You the Most: Examining Perpetrators in Multiple Casualty Events. J Surg Res. 2019 Oct;242:172-176. PubMed PMID: 31078902
Carmichael H, Steward L, Peltz ED, Wright FL, Velopulos CG. Preventable death and interpersonal violence in the United States: Who can be saved?. J Trauma Acute Care Surg. 2019 Jul;87(1):200-204. PubMed PMID: 31045724
Rushing A, Bugaev N, Jones C, Como JJ, Fox N, Cripps M, Robinson B, Velopulos C, Haut ER, Narayan M. Management of acute appendicitis in adults: A practice management guideline from the Eastern Association for the Surgery of Trauma. J Trauma Acute Care Surg. 2019 Jul;87(1):214-224. PubMed PMID: 30908453
Carmichael H, Wiktor AJ, McIntyre RC, Lambert Wagner A, Velopulos CG. Regional disparities in access to verified burn center care in the United States. J Trauma Acute Care Surg. 2019 Jul;87(1):111-116. PubMed PMID: 30865160
Heelan Gladden AA, Peltz ED, McIntyre RC Jr, Vega S, Krell R, Velopulos C, Ferrigno L, Wright FL. Effect of Pre-Hospital Use of the Assessment of Blood Consumption Score and Pre-Thawed Fresh Frozen Plasma on Resuscitation and Trauma Mortality. J Am Coll Surg. 2019 Feb;228(2):141-147. PubMed PMID: 30476549
Trauma and Acute Care Surgery, Board Certification
American Board of Surgery, Board Certification
(0001)
ABS Surgical Critical Care, Board Certification
(0001)
Health Finance and Management, Certificate
(0001)
Care Philosophy
Interested in how Policy, Economics, and Behavior intersect to affect Access to Care and Health Care delivery, and how these are influenced by the physical environment and social determinants of health.
General Information
Medical Schools:
MD, University of Texas Medical School at Houston
(2003)
Graduate Schools:
MHS, Johns Hopkins University Bloomberg School of Public Health
(2013)
Undergraduate Schools:
BA, University of Texas–Austin (TX)
(1998)
Internships:
University of Texas Health Science Center at Houston Program
(2004)
Residency Programs:
University of Florida Program, Chief Resident, Surgery (2008)
Fellowships:
University of Florida Program, Surgical Critical Care
(2009)
Johns Hopkins University School of Medicine Program, Trauma and Acute Care Surgery
(0001)