Catherine Garrison Velopulos, MD
Professor, Surgery-GI, Trauma, and Endocrine Surgery
Medical School
- MD, University of Texas Medical School at Houston (2003)
Graduate School
- MHS, Johns Hopkins University Bloomberg School of Public Health (2013)
Undergraduate School
- BA, University of Texas–Austin (TX) (1998)
Internship
- University of Texas Health Science Center at Houston Program (2004)
Residency
- 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
Department
Surgery-GI, Trauma, and Endocrine SurgeryPublications
- Henkind R, Carmichael H, Stearns DR, Thomas M, Abbitt D, Myers QWO, Zakrison T, Velopulos CG. Left out in the cold: Homicide amongst persons experiencing homelessness. Am J Surg. 2024 Jan;227:204-207. PubMed PMID: 37875381
- Maiga AW, Vella MA, Appelbaum RD, Irlmeier R, Ye F, Holena DN, Dumas RP. Getting out of the bay faster: Assessing trauma team performance using trauma video review. J Trauma Acute Care Surg. 2024 Jan 1;96(1):76-84. PubMed PMID: 37880840
- Nguyen PD, Nahmias J, Aryan N, Samuels JM, Cripps M, Carmichael H, McIntyre R Jr, Urban S, Burlew CC, Velopulos C, 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, 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, Werner NL, Haan JM, Lightwine K, Semon G, Spoor K, Harmon LA, Grigorian A. Observation-first versus angioembolization-first approach in stable patients with blunt liver trauma: A WTA multicenter study. J Trauma Acute Care Surg. 2024 Nov 1;97(5):764-769. PubMed PMID: 39443838
- Mathai SK, Garofalo DM, Myers QW, Heron CH, Clair VS, Bonner I, Dyas AR, Velopulos CG, Hazel K. Analyzing the Social Vulnerability Index With Metabolic Surgery. J Surg Res. 2024 Oct 1;303:164-172. [Epub ahead of print] PubMed PMID: 39357347
- Lambert-Kerzner A, Myers QWO, Mucharsky E, Henderson WG, Harnke B, Stuart CM, Dyas AR, Bronsert MR, Colborn K, Velopulos CG, Meguid RA. Using Implementation Science in Surgical Care: A Scoping Review. Ann Surg. 2024 Sep 3. [Epub ahead of print] PubMed PMID: 39225399
- Wolf A, Heron C, Bonner I, Dyas A, Garofalo D, Velopulos CG, Myers QWO. Vulnerable populations and the emergency ventral hernia: A retrospective cohort study. Surgery. 2024 Oct;176(4):1138-1142. PubMed PMID: 39089935
- Ayoung-Chee PR, Gore AV, Bruns B, Knowlton LM, Nahmias J, Davis KA, Leichtle S, Ross SW, Scherer LR 3rd, Velopulos C, Martin RS, Staudenmayer KL. Value in acute care surgery, part 3: Defining value in acute surgical care-It depends on the perspective. J Trauma Acute Care Surg. 2024 Oct 1;97(4):e53-e57. PubMed PMID: 38706096
- Aryan N, Grigorian A, Tay-Lasso E, Cripps M, Carmichael H, McIntyre R Jr, Urban S, Velopulos C, Cothren Burlew C, Ballow S, Dirks RC, 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, 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, Werner NL, Haan JM, Lightwine K, Semon G, Spoor K, Harmon LA, Samuels JM, Spalding MC, Nahmias J. High-grade liver injuries with contrast extravasation managed initially with interventional radiology versus observation: A secondary analysis of a WTA multicenter study. Am J Surg. 2024 Aug;234:105-111. PubMed PMID: 38553335
- Tran W, Thomas MB, Garofalo D, Patten M, Graham R, Estrella J, Dickinson K, Carmichael H, Velopulos CG, Myers QWO. The Characterization of Violent Deaths Among Asian and Pacific Islander Americans. J Surg Res. 2024 May;297:109-120. PubMed PMID: 38484452
- Spoor K, Cull JD, Otaibi BW, Hazelton JP, Chipko J, Reynolds J, Fugate S, Pederson C, Zier LB, Jacobson LE, Williams JM, Easterday TS, Byerly S, Mentzer C, Hawke E, Cullinane DC, Ontengco JB, Bugaev N, LeClair M, Udekwu P, Josephs C, Noorbaksh M, Babowice J, Velopulos CG, Urban S, Goldenberg A, Ghobrial G, Pickering JM, Quarfordt SD, Aunchman AF, LaRiccia AK, Spalding C, Catalano RD, Basham JE, Edmundson PM, Nahmias J, Tay E, Norwood SH, Meadows K, Wong Y, Hardman C. Failure rates of nonoperative management of low-grade splenic injuries with active extravasation: an Eastern Association for the Surgery of Trauma multicenter study. Trauma Surg Acute Care Open. 2024;9(1):e001159. PubMed PMID: 38464553
- Stuart CM, Dyas AR, Bronsert MR, Velopulos CG, Randhawa SK, David EA, Mitchell JD, Meguid RA. The Effect of Social Vulnerability on Initial Stage and Treatment for Non-Small Cell Lung Cancer. Lung Cancer. 2024 Feb;188:107452. PubMed PMID: 38176296
- Henkind R, Carmichael H, Stearns DR, Thomas M, Abbitt D, Myers QWO, Zakrison T, Velopulos CG. Left out in the cold: Homicide amongst persons experiencing homelessness. Am J Surg. 2024 Jan;227:204-207. PubMed PMID: 37875381
- Dyas AR, Carmichael H, Bronsert MR, Stuart CM, Garofalo DM, Henderson WG, Colborn KL, Schulick RD, Meguid RA, Velopulos CG. Social vulnerability is associated with higher risk-adjusted rates of postoperative complications in a broad surgical population. Am J Surg. 2024 Mar;229:26-33. PubMed PMID: 37775458
- Dyas AR, Thomas MB, Bronsert MR, Madsen HJ, Colborn KL, Henderson WG, David EA, Velopulos CG, Meguid RA. Emergency thoracic surgery patients have worse risk-adjusted outcomes than non-emergency patients. Surgery. 2023 Oct;174(4):956-963. PubMed PMID: 37507304
- Thomas MB, Urban S, Carmichael H, Banker J, Shah A, Schaid T, Wright A, Velopulos CG, Cripps M. Tick-tock: Prehospital intubation is associated with longer field time without any survival benefit. Surgery. 2023 Oct;174(4):1034-1040. PubMed PMID: 37500409
- Moore A, Stearns D, Carmichael H, Myers QWO, Velopulos CG. Safer Behind Bars? Comparing In-Custody Deaths Prior to and During Incarceration. J Surg Res. 2023 Nov;291:260-264. PubMed PMID: 37478650
- Stuart CM, Dyas AR, Byers S, Velopulos C, Randhawa S, David EA, Pritap A, Stewart CL, Mitchell JD, McCarter MD, Meguid RA. Social vulnerability is associated with increased postoperative morbidity following esophagectomy. J Thorac Cardiovasc Surg. 2023 Oct;166(4):1254-1261. PubMed PMID: 37119966
- Stearns DR, Moore A, Myers QWO, Carmichael H, Velopulos CG. Sex Differences in Violent Death During Incarceration and Legal Intervention. J Surg Res. 2023 Sep;289:90-96. PubMed PMID: 37086601
- Abolarin J, Myers QWO, Carmichael H, Moore A, Velopulos CG. Immigrating to Unsafe Spaces: Unique Patterns of Homicide in Immigrant Victims Compared to Native-Born Citizens. J Surg Res. 2023 Aug;288:321-328. PubMed PMID: 37058989
- Dumas RP, Vella MA, Maiga AW, Erickson CR, Dennis BM, da Luz LT, Pannell D, Quigley E, Velopulos CG, Hendzlik P, Marinica A, Bruce N, Margolick J, Butler DF, Estroff J, Zebley JA, Alexander A, Mitchell S, Grossman Verner HM, Truitt M, Berry S, Middlekauff J, Luce S, Leshikar D, Krowsoski L, Bukur M, Polite NM, McMann AH, Staszak R, Armen SB, Horrigan T, Moore FO, Bjordahl P, Guido J, Mathew S, Diaz BF, Mooney J, Hebeler K, Holena DN. Moving the needle on time to resuscitation: An EAST prospective multicenter study of vascular access in hypotensive injured patients using trauma video review. J Trauma Acute Care Surg. 2023 Jul 1;95(1):87-93. PubMed PMID: 37012624
- Stevens J, Reppucci ML, Pickett K, Acker S, Carmichael H, Velopulos CG, Bensard D, Kulungowski A. Using the Social Vulnerability Index to Examine Disparities in Surgical Pediatric Trauma Patients. J Surg Res. 2023 Jul;287:55-62. PubMed PMID: 36868124
- Henkind R, Carmichael H, Stearns DR, Thomas M, Abbitt D, Myers QWO, Velopulos CG. Suicide Among Persons Experiencing Homelessness. J Surg Res. 2023 Apr;284:213-220. PubMed PMID: 36587481
- 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
- Samuels J, Carmichael H, Hazel K, Velopulos C, Rothchild K, Schoen J. Chronic psychiatric diagnoses increase emergency department utilization following bariatric surgery. Surg Endosc. 2023 Mar;37(3):2215-2223. PubMed PMID: 35879568
- Stuart CM, Dyas AR, Bronsert MR, Velopulos CG, Randhawa SK, David EA, Mitchell JD, Meguid RA. The Effect of Social Vulnerability on Initial Stage and Treatment for Non-Small Cell Lung Cancer. Lung Cancer. 2023 Dec 23;188:107452. [Epub ahead of print] PubMed PMID: 38176296
- Stuart CM, Dyas AR, Byers S, Velopulos CG, Randhawa SK, David EA, Mitchell JD, Meguid RA. Social vulnerability is associated with post-operative morbidity following robotic-assisted lung resection. J Thorac Dis. 2023 Nov 30;15(11):5931-5941. PubMed PMID: 38090321
- Thomas MB, Carmichael H, Harrison M, Abbitt D, Moore A, Myers QWO, Velopulos CG. Prioritizing rapid COVID-19 testing in emergency general surgery patients decreases burden of inpatient hospital admission. Trauma Surg Acute Care Open. 2023;8(1):e001085. PubMed PMID: 37954921
- Stuart CM, Dyas AR, Byers S, Velopulos CG, Randhawa SK, David EA, Mitchell JD, Meguid RA. Social vulnerability is associated with post-operative morbidity following robotic-assisted lung resection. J Thorac Dis. 2023 Nov 30;15(11):5931-5941. PubMed PMID: 38090321
- Thomas MB, Carmichael H, Harrison M, Abbitt D, Moore A, Myers QWO, Velopulos CG. Prioritizing rapid COVID-19 testing in emergency general surgery patients decreases burden of inpatient hospital admission. Trauma Surg Acute Care Open. 2023;8(1):e001085. PubMed PMID: 37954921
- Dyas AR, Carmichael H, Bronsert MR, Stuart CM, Garofalo DM, Henderson WG, Colborn KL, Schulick RD, Meguid RA, Velopulos CG. Social vulnerability is associated with higher risk-adjusted rates of postoperative complications in a broad surgical population. Am J Surg. 2023 Sep 23. [Epub ahead of print] PubMed PMID: 37775458
- Dyas AR, Thomas MB, Bronsert MR, Madsen HJ, Colborn KL, Henderson WG, David EA, Velopulos CG, Meguid RA. Emergency thoracic surgery patients have worse risk-adjusted outcomes than non-emergency patients. Surgery. 2023 Oct;174(4):956-963. PubMed PMID: 37507304
- Thomas MB, Urban S, Carmichael H, Banker J, Shah A, Schaid T, Wright A, Velopulos CG, Cripps M. Tick-tock: Prehospital intubation is associated with longer field time without any survival benefit. Surgery. 2023 Oct;174(4):1034-1040. PubMed PMID: 37500409
- Moore A, Stearns D, Carmichael H, Myers QWO, Velopulos CG. Safer Behind Bars? Comparing In-Custody Deaths Prior to and During Incarceration. J Surg Res. 2023 Nov;291:260-264. PubMed PMID: 37478650
- Stuart CM, Dyas AR, Byers S, Velopulos C, Randhawa S, David EA, Pritap A, Stewart CL, Mitchell JD, McCarter MD, Meguid RA. Social vulnerability is associated with increased postoperative morbidity following esophagectomy. J Thorac Cardiovasc Surg. 2023 Oct;166(4):1254-1261. PubMed PMID: 37119966
- Stearns DR, Moore A, Myers QWO, Carmichael H, Velopulos CG. Sex Differences in Violent Death During Incarceration and Legal Intervention. J Surg Res. 2023 Sep;289:90-96. PubMed PMID: 37086601
- Abolarin J, Myers QWO, Carmichael H, Moore A, Velopulos CG. Immigrating to Unsafe Spaces: Unique Patterns of Homicide in Immigrant Victims Compared to Native-Born Citizens. J Surg Res. 2023 Aug;288:321-328. PubMed PMID: 37058989
- Dumas RP, Vella MA, Maiga AW, Erickson CR, Dennis BM, da Luz LT, Pannell D, Quigley E, Velopulos CG, Hendzlik P, Marinica A, Bruce N, Margolick J, Butler DF, Estroff J, Zebley JA, Alexander A, Mitchell S, Grossman Verner HM, Truitt M, Berry S, Middlekauff J, Luce S, Leshikar D, Krowsoski L, Bukur M, Polite NM, McMann AH, Staszak R, Armen SB, Horrigan T, Moore FO, Bjordahl P, Guido J, Mathew S, Diaz BF, Mooney J, Hebeler K, Holena DN. Moving the needle on time to resuscitation: An EAST prospective multicenter study of vascular access in hypotensive injured patients using trauma video review. J Trauma Acute Care Surg. 2023 Jul 1;95(1):87-93. PubMed PMID: 37012624
- Stevens J, Reppucci ML, Pickett K, Acker S, Carmichael H, Velopulos CG, Bensard D, Kulungowski A. Using the Social Vulnerability Index to Examine Disparities in Surgical Pediatric Trauma Patients. J Surg Res. 2023 Jul;287:55-62. PubMed PMID: 36868124
- Henkind R, Carmichael H, Stearns DR, Thomas M, Abbitt D, Myers QWO, Velopulos CG. Suicide Among Persons Experiencing Homelessness. J Surg Res. 2023 Apr;284:213-220. PubMed PMID: 36587481
- 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
- Samuels J, Carmichael H, Hazel K, Velopulos C, Rothchild K, Schoen J. Chronic psychiatric diagnoses increase emergency department utilization following bariatric surgery. Surg Endosc. 2023 Mar;37(3):2215-2223. PubMed PMID: 35879568
- Argandykov D, Dorken-Gallastegi A, El Moheb M, Gebran A, Proaño-Zamudio JA, Bokenkamp M, Renne AM, Nepogodiev D, Bhangu A, Kaafarani HMA. Is perioperative COVID-19 really associated with worse surgical outcomes? A nationwide COVIDSurg propensity-matched analysis. J Trauma Acute Care Surg. 2023 Apr 1;94(4):513-524. PubMed PMID: 36949053
- 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
- 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
- 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
- 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, 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
- 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
Professional Memberships
- Eastern Association for the Surgery of Trauma, Program Committee
- Association of Academic Surgeons, Publications Committee
- American College of Surgeons, FACS
- Society of Critical Care Medicine, Member
Practice Locations
UCHealth University of Colorado Hospital Trauma Center12505 E. 16th Avenue
Anschutz Inpatient Pavilion 2, First floor
Aurora, CO 80045
720-848-2711
Hospital Affiliation
- University of Colorado Hospital
Specialty Information
Specialties- Surgical Critical Care, Board Certification
- 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.
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.