Scholars@Duke

• Background
• 

  Education, Training, & Certifications

  • M.D., Medical University of South Carolina, College of Medicine 1999
• 

  Previous Appointments & Affiliations

  • Division Chief of Metabolic and Weight Loss Surgery in the Department of Surgery, Surgery, Clinical Science Departments 2015 - 2022
  • Assistant Professor of Surgery, Surgery, Minimally Invasive Surgery, Surgery 2011 - 2020
  • Assistant Professor of Surgery, Surgery, Clinical Science Departments 2007 - 2011
  • Clinical Associate in the Department of Surgery, Surgery, Clinical Science Departments 2005 - 2007
• Research
• 

  Selected Grants

  • Mechanisms that Direct Airway Remodeling in Obese Asthma awarded by National Institutes of Health 2017 - 2023
  • FSF Fellowship awarded by Foundation for Surgical Fellowships 2019 - 2020
  • Bariatric Mini Fellowship Sleeve/Roux (PACE program) awarded by Covidien Ltd. 2017 - 2020
  • Duke Minimally Invasive and Bariatric Surgery Fellowship awarded by W. L. Gore & Associates, Inc. 2018 - 2019
  • Management of Reflux after Sleeve Using Stretta (MaRSS) awarded by Mederi Therapeutics 2016 - 2019
  • Ex-Vivo Stapling of Bariatric Gastrectomy Specimens awarded by Intuitive Surgical, Inc. 2017 - 2019
  • Psychology of Minimally Invasive Surgical Scars awarded by Teleflex, Inc. 2016 - 2018
  • Single-arm non-randomized study of the Stomach, Intestinal and Pylorus Sparing(SIPS) procedure(COVSIPS0447) awarded by Covidien Ltd. 2014 - 2018
  • FSF Fellowship awarded by Foundation for Surgical Fellowships 2016 - 2017
• 

  External Relationships

  • Covidien (Medtronic)
  • Medtronic Inc.
  • Novo Nordisk
  • W. L. Gore & Associates, Inc.
  • cinemed
• Publications & Artistic Works
• 

  Selected Publications

  • Academic Articles

    • Shantavasinkul, Prapimporn Chattranukulchai, Phillip Omotosho, Michael J. Muehlbauer, Michael Natoli, Leonor Corsino, Jenny Tong, Dana Portenier, and Alfonso Torquati. “Metabolic profiles, energy expenditures, and body compositions of the weight regain versus sustained weight loss patients who underwent Roux-en-Y gastric bypass.” Surg Obes Relat Dis 17, no. 12 (December 2021): 2015–25. https://doi.org/10.1016/j.soard.2021.09.007.
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    • Juo, Yen-Yi, Chan Park, Jin Yoo, Daniel Guerron, Ranjan Sudan, Kelli Friedman, Dana Portenier, and Keri A. Seymour. “Technical Feasibility, Outcomes, and Patient Satisfaction After Needlescopic and Laparoscopic Bariatric Surgery: a Randomized Study.” Obes Surg 31, no. 11 (November 2021): 5085–91. https://doi.org/10.1007/s11695-021-05675-5.
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    • Alexopoulos, Anastasia-Stefania, Matthew J. Crowley, Ying Wang, Cynthia A. Moylan, Cynthia D. Guy, Ricardo Henao, Dawn L. Piercy, et al. “Glycemic Control Predicts Severity of Hepatocyte Ballooning and Hepatic Fibrosis in Nonalcoholic Fatty Liver Disease.” Hepatology 74, no. 3 (September 2021): 1220–33. https://doi.org/10.1002/hep.31806.
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    • Szoka, N., S. Szoka, K. Friedman, and D. Portenier. “Sexual and Gender Minority Bariatric Patients: An Unseen Population.” Bariatric Surgical Practice and Patient Care 16, no. 1 (March 1, 2021): 30–35. https://doi.org/10.1089/bari.2020.0049.
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    • Welsh, Leonard K., Gerardo Davalos, Ramon Diaz, Andres Narvaez, Juan Esteban Perez, Melissa Castro, Maragatha Kuchibhatla, Thomas Risoli, Dana Portenier, and Alfredo D. Guerron. “Magnetic Liver Retraction Decreases Postoperative Pain and Length of Stay in Bariatric Surgery Compared to Nathanson Device.” J Laparoendosc Adv Surg Tech A 31, no. 2 (February 2021): 194–202. https://doi.org/10.1089/lap.2020.0388.
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    • Luengas, Rafael, Jose Galindo, Melissa Castro, Andres Marambio, Guillermo Watkins, Mario Rodriguez Del Rey, Cristobal Davanzo, Dana Portenier, and Alfredo D. Guerron. “First prospective clinical trial of reduced incision bariatric procedures using magnetic liver retraction.” Surg Obes Relat Dis 17, no. 1 (January 2021): 147–52. https://doi.org/10.1016/j.soard.2020.08.017.
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    • Rawlings, Arthur, Lelan Sillin, Phillip Shadduck, Marian McDonald, Peter Crookes, Bruce MacFadyen, John Mellinger, and John the SAGES Ethics Committee. “Informed consent: a shared decision-making process that creates a new professional obligation for care.” Surg Endosc 34, no. 11 (November 2020): 4713–16. https://doi.org/10.1007/s00464-020-07970-1.
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    • Guerron, Alfredo D., Juan Esteban Perez, Thomas Risoli, Hui-Jie Lee, Dana Portenier, and Leonor Corsino. “Performance and improvement of the DiaRem score in diabetes remission prediction: a study with diverse procedure types.” Surg Obes Relat Dis 16, no. 10 (October 2020): 1531–42. https://doi.org/10.1016/j.soard.2020.05.010.
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    • Welsh, Leonard K., Andrew R. Luhrs, Gerardo Davalos, Ramon Diaz, Andres Narvaez, Juan Esteban Perez, Reginald Lerebours, Maragatha Kuchibhatla, Dana D. Portenier, and Alfredo D. Guerron. “Racial Disparities in Bariatric Surgery Complications and Mortality Using the MBSAQIP Data Registry.” Obes Surg 30, no. 8 (August 2020): 3099–3110. https://doi.org/10.1007/s11695-020-04657-3.
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    • Narvaez C, Andres, Camila Ortega, Gerardo Davalos, L Kasey Welsh, Ramon Diaz Jara, Juan Esteban Perez, Jana Chtchetinin, et al. “Scars Matter: The Importance of Incision Decisions in Bariatric Patients.” Obes Surg 30, no. 4 (April 2020): 1611–15. https://doi.org/10.1007/s11695-019-04251-2.
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    • Cottam, Daniel, Mitchell Roslin, Paul Enochs, Matthew Metz, Dana Portenier, and Dennis Smith. “Single Anastomosis Duodenal Switch: 1-Year Outcomes.” Obes Surg 30, no. 4 (April 2020): 1506–14. https://doi.org/10.1007/s11695-019-04352-y.
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    • Jara, Ramón Díaz, Alfredo D. Guerrón, and Dana Portenier. “Complications of Robotic Surgery.” Surg Clin North Am 100, no. 2 (April 2020): 461–68. https://doi.org/10.1016/j.suc.2019.12.008.
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    • Luhrs, Andrew R., Gerardo Davalos, Reginald Lerebours, Jin Yoo, Chan Park, Lawrence Tabone, Philip Omotosho, Alfonso Torquati, Dana Portenier, and Alfredo D. Guerron. “Determining changes in bone metabolism after bariatric surgery in postmenopausal women.” Surg Endosc 34, no. 4 (April 2020): 1754–60. https://doi.org/10.1007/s00464-019-06922-8.
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    • Díaz, Ramón, Andrés Narvaez, Leonard Welsh, Juan Esteban Pérez, Gerardo Dávalos, Dana Portenier, and A Daniel Guerron. “[Endoscopy after bariatric surgery: what the endoscopist must know].” Rev Med Chil 148, no. 1 (January 2020): 83–92. https://doi.org/10.4067/S0034-98872020000100083.
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    • Davalos, Gerardo, Billy Y. Lan, Ramon Diaz, Leonard K. Welsh, Estefania Roldan, Dana Portenier, and Alfredo D. Guerron. “Single-Center Experience with Magnetic Retraction in Colorectal Surgery.” J Laparoendosc Adv Surg Tech A 29, no. 8 (August 2019): 1033–37. https://doi.org/10.1089/lap.2018.0744.
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    • Loomba, Rohit, Anjali Jain, Anna Mae Diehl, Cynthia D. Guy, Dana Portenier, Ranjan Sudan, Seema Singh, et al. “Validation of Serum Test for Advanced Liver Fibrosis in Patients With Nonalcoholic Steatohepatitis.” Clin Gastroenterol Hepatol 17, no. 9 (August 2019): 1867-1876.e3. https://doi.org/10.1016/j.cgh.2018.11.004.
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    • Diaz, Ramon, Gerardo Davalos, Leonard K. Welsh, Dana Portenier, and Alfredo D. Guerron. “Use of magnets in gastrointestinal surgery.” Surg Endosc 33, no. 6 (June 2019): 1721–30. https://doi.org/10.1007/s00464-019-06718-w.
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    • Guerron, Alfredo D., Camila B. Ortega, Hui-Jie Lee, Gerardo Davalos, Jennifer Ingram, and Dana Portenier. “Asthma medication usage is significantly reduced following bariatric surgery.” Surg Endosc 33, no. 6 (June 2019): 1967–75. https://doi.org/10.1007/s00464-018-6500-x.
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    • Davis, Matthew, Gerardo Davalos, Camila Ortega, Sugong Chen, Scott Schimpke, Kunoor Jain-Spangler, Jin Yoo, et al. “Magnetic Liver Retraction: an Incision-Less Approach for Less Invasive Bariatric Surgery.” Obes Surg 29, no. 3 (March 2019): 1068–73. https://doi.org/10.1007/s11695-018-03655-w.
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    • Díaz Jara, R. I., D. Portenier, R. Luengas T., and A. D. Guerrón-Cruz. “Anatomical modifications of the biliopancreatic diversion with duodenal switch: Do they have a future role in bariatric and metabolic surgery?” Revista De Cirugia 71, no. 2 (January 1, 2019): 187–91. https://doi.org/10.4067/s2452-45492019000200187.
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    • Rafael, L. T., G. C. Daniel, D. J. Ramón, G. Dávalos, and D. Portenier. “Current news and trends in gastrointestinal robotic surgery.” Revista De Cirugia 71, no. 4 (January 1, 2019): 352–58.
    • Ortega, Camila B., Alfredo D. Guerron, and Dana Portenier. “Endoscopic Abscess Septotomy: A Less Invasive Approach for the Treatment of Sleeve Gastrectomy Leaks.” J Laparoendosc Adv Surg Tech A 28, no. 7 (July 2018): 859–63. https://doi.org/10.1089/lap.2017.0429.
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    • Coleman, Lauren, Gareth Gilna, Dana Portenier, Edward Auyang, Uzer Khan, Daniel Grabo, Alison Wilson, and Nova Szoka. “Trauma laparoscopy from 1925 to 2017: Publication history and study demographics of an evolving modality.” J Trauma Acute Care Surg 84, no. 4 (April 2018): 664–69. https://doi.org/10.1097/TA.0000000000001780.
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    • Guerron, Alfredo D., Camila B. Ortega, and Dana Portenier. “Endoscopic Abscess Septotomy for Management of Sleeve Gastrectomy Leak.” Obes Surg 27, no. 10 (October 2017): 2672–74. https://doi.org/10.1007/s11695-017-2809-0.
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    • Dargent, Jerome, Ramon Vilallonga, Leon Katz, Dana Portenier, Erik Wilson, Alex Esacalona, Jacques Himpens, Natan Zundel, and Kelvin Higa. “IFSO Position Statement on New Technologies for Treatment of Obesity : The International Federation for Surgery of Obesity (IFSO) and Its New Technologies Committee. Endorsed by the Ethical Committee of IFSO, Approved by the IFSO Executive Council on May, 3, 2017.” Obes Surg 27, no. 9 (September 2017): 2456–59. https://doi.org/10.1007/s11695-017-2780-9.
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    • Friedman, Kelli E., Katherine Applegate, Dana Portenier, and Megan A. McVay. “Bariatric surgery in patients with bipolar spectrum disorders: Selection factors, postoperative visit attendance, and weight outcomes.” Surg Obes Relat Dis 13, no. 4 (April 2017): 643–51. https://doi.org/10.1016/j.soard.2016.10.009.
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    • Cottam, Austin, Daniel Cottam, Dana Portenier, Hinali Zaveri, Amit Surve, Samuel Cottam, Legrand Belnap, Walter Medlin, and Christina Richards. “A Matched Cohort Analysis of Stomach Intestinal Pylorus Saving (SIPS) Surgery Versus Biliopancreatic Diversion with Duodenal Switch with Two-Year Follow-up.” Obes Surg 27, no. 2 (February 2017): 454–61. https://doi.org/10.1007/s11695-016-2341-7.
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    • Guerron, Alfredo D., Hui-Jie Lee, Jin Yoo, Keri Seymour, Ranjan Sudan, Dana Portenier, and Chan Park. “Laparoscopic Single-Site Inguinal Hernia Repair Using a Self-Fixating Mesh.” Jsls 21, no. 1 (2017). https://doi.org/10.4293/JSLS.2016.00103.
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    • Shantavasinkul, Prapimporn Chattranukulchai, Philip Omotosho, Leonor Corsino, Dana Portenier, and Alfonso Torquati. “Predictors of weight regain in patients who underwent Roux-en-Y gastric bypass surgery.” Surg Obes Relat Dis 12, no. 9 (November 2016): 1640–45. https://doi.org/10.1016/j.soard.2016.08.028.
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    • Daniel Guerron, A., and Dana D. Portenier. “Patient Selection and Surgical Management of High-Risk Patients with Morbid Obesity.” Surg Clin North Am 96, no. 4 (August 2016): 743–62. https://doi.org/10.1016/j.suc.2016.03.009.
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    • Chen, Yijun, Leonor Corsino, Prapimporn Chattranukulchai Shantavasinkul, John Grant, Dana Portenier, Laura Ding, and Alfonso Torquati. “Gastric Bypass Surgery Leads to Long-term Remission or Improvement of Type 2 Diabetes and Significant Decrease of Microvascular and Macrovascular Complications.” Ann Surg 263, no. 6 (June 2016): 1138–42. https://doi.org/10.1097/SLA.0000000000001509.
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    • Xu, Lu, Jun Yin, Dean J. Mikami, Dana D. Portenier, Xiaojun Zhou, and Zhongqi Mao. “Effectiveness of laparoscopic Roux-en-Y gastric bypass on obese class I type 2 diabetes mellitus patients.” Surg Obes Relat Dis 11, no. 6 (2015): 1220–26. https://doi.org/10.1016/j.soard.2015.02.013.
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    • Jain-Spangler, Kunoor, Dana Portenier, Alfonso Torquati, and Ranjan Sudan. “Conversion of vertical banded gastroplasty to stand-alone sleeve gastrectomy or biliopancreatic diversion with duodenal switch.” J Gastrointest Surg 17, no. 4 (April 2013): 805–8. https://doi.org/10.1007/s11605-013-2165-x.
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    • Ceppa, Eugene P., Chan W. Park, Dana D. Portenier, and Aurora D. Pryor. “Single-incision laparoscopic right colectomy: an efficient technique.” Surg Laparosc Endosc Percutan Tech 22, no. 2 (April 2012): 88–94. https://doi.org/10.1097/SLE.0b013e3182440659.
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    • Ceppa, Eugene P., Duykhanh P. Ceppa, Philip A. Omotosho, James A. Dickerson, Chan W. Park, and Dana D. Portenier. “Algorithm to diagnose etiology of hypoglycemia after Roux-en-Y gastric bypass for morbid obesity: case series and review of the literature.” Surg Obes Relat Dis 8, no. 5 (2012): 641–47. https://doi.org/10.1016/j.soard.2011.08.008.
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    • Mor, Alessandro, Lindsey Sharp, Dana Portenier, Ranjan Sudan, and Alfonso Torquati. “Weight loss at first postoperative visit predicts long-term outcome of Roux-en-Y gastric bypass using Duke weight loss surgery chart.” Surg Obes Relat Dis 8, no. 5 (2012): 556–60. https://doi.org/10.1016/j.soard.2012.06.014.
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    • Omotosho, Philip, Basil Yurcisin, Eugene Ceppa, Jeffrey Miller, David Kirsch, and Dana D. Portenier. “In vivo assessment of an absorbable and nonabsorbable knotless barbed suture for laparoscopic single-layer enterotomy closure: a clinical and biomechanical comparison against nonbarbed suture.” J Laparoendosc Adv Surg Tech A 21, no. 10 (December 2011): 893–97. https://doi.org/10.1089/lap.2011.0281.
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    • Walsh, Christine M., and Hilary S. Blackwood, eds. “Clinical Q&A.” Bariatric Nursing and Surgical Patient Care 4, no. 1 (March 2009): 61–65. https://doi.org/10.1089/bar.2009.9988.
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    • Kadera, Brian E., Kristian Lum, John Grant, Aurora D. Pryor, Dana D. Portenier, and Eric J. DeMaria. “Remission of type 2 diabetes after Roux-en-Y gastric bypass is associated with greater weight loss.” Surg Obes Relat Dis 5, no. 3 (2009): 305–9. https://doi.org/10.1016/j.soard.2009.02.007.
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    • Portenier, Dana, and Eric J. DeMaria. “Risk scoring systems for weight loss surgery.” Adv Surg 42 (2008): 313–20. https://doi.org/10.1016/j.yasu.2008.04.005.
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    • Harnisch, Michael C., Dana D. Portenier, Aurora D. Pryor, Rebecca Prince-Petersen, John P. Grant, and Eric J. DeMaria. “Preoperative weight gain does not predict failure of weight loss or co-morbidity resolution of laparoscopic Roux-en-Y gastric bypass for morbid obesity.” Surg Obes Relat Dis 4, no. 3 (2008): 445–50. https://doi.org/10.1016/j.soard.2007.09.016.
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    • Fuente, Sebastian G. de la, Eric J. Demaria, James D. Reynolds, Dana D. Portenier, and Aurora D. Pryor. “New developments in surgery: Natural Orifice Transluminal Endoscopic Surgery (NOTES).” Arch Surg 142, no. 3 (March 2007): 295–97. https://doi.org/10.1001/archsurg.142.3.295.
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    • DeMaria, Eric J., Dana Portenier, and Luke Wolfe. “Obesity surgery mortality risk score: proposal for a clinically useful score to predict mortality risk in patients undergoing gastric bypass.” Surg Obes Relat Dis 3, no. 2 (2007): 134–40. https://doi.org/10.1016/j.soard.2007.01.005.
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    • Portenier, Dana D., John P. Grant, Hilary S. Blackwood, Aurora Pryor, Ross L. McMahon, and Eric DeMaria. “Expectant management of the asymptomatic gallbladder at Roux-en-Y gastric bypass.” Surg Obes Relat Dis 3, no. 4 (2007): 476–79. https://doi.org/10.1016/j.soard.2007.02.006.
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    • John, T., D. Portenier, B. Auster, D. Mehregan, A. Drelichman, and A. Telmos. “Leiomyosarcoma of scrotum--case report and review of literature.” Urology 67, no. 2 (February 2006): 424.e13-424.e15. https://doi.org/10.1016/j.urology.2005.09.022.
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    • Mittal, Vijay K., and Dana Portenier. “Continuity of care in the 80-hour workweek era?” Curr Surg 63, no. 1 (2006): 31–34. https://doi.org/10.1016/j.cursur.2005.04.007.
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  • Book Sections

    • Guerron, A. D., Camila Ortega, and Dana Portenier. “Anastomotic leak following gastric bypass.” In Complications in Bariatric Surgery, edited by Diego Camacho and Natan Zundel. Springer, 2018.
    • Park, C. W., and D. D. Portenier. “Basic setup, principles, and troubleshooting in robotic surgery.” In Essentials of Robotic Surgery, 27–43, 2015. https://doi.org/10.1007/978-3-319-09564-6_3.
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    • Tabone, L. E., E. P. Ceppa, and D. Portenier. “Gastric plication for obesity.” In Reduced Port Laparoscopic Surgery, 437–52, 2014. https://doi.org/10.1007/978-4-431-54601-6_36.
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    • Danko, M., and D. Portenier. “Bile duct cancer: Peripheral and hilar cholangiocarcinoma.” In Contemporary Surgical Management of Liver, Biliary Tract, and Pancreatic Disease, 353–62, 2013. https://doi.org/10.1142/9789814293068_0028.
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    • Omotosho, Philip, and Dana D. Portenier. “Team Training.” In The SAGES Manual of Quality, Outcomes and Patient Safety, 443–49. Springer US, 2012. https://doi.org/10.1007/978-1-4419-7901-8_44.
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    • Park, Chan W., and Dana D. Portenier. “Bipolar Electrosurgical Devices.” In The SAGES Manual on the Fundamental Use of Surgical Energy (FUSE), 93–106. Springer New York, 2012. https://doi.org/10.1007/978-1-4614-2074-3_5.
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    • Portenier, Dana D. “Hands-on Station: Ultrasonic Energy Devices.” In The SAGES Manual on the Fundamental Use of Surgical Energy (FUSE), 223–24. Springer New York, 2012. https://doi.org/10.1007/978-1-4614-2074-3_17.
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    • Ceppa, E. P., and D. Portenier. “Management of bleeding from the pancreas.” In Gastrointestinal Bleeding: A Practical Approach to Diagnosis and Management, 111–17, 2010. https://doi.org/10.1007/978-1-4419-1693-8_10.
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  • Conference Papers

    • Suzuki, Ayako, Ying Wang, Andrea D. Coviello, Data D. Portenier, Cynthia A. Moylan, Dawn L. Piercy, Cynthia D. Guy, Anna Mae Diehl, and Manal F. Abdelmalek. “HISTORY OF BREASTFEEDING IS ASSOCIATED WITH A DECREASED RISK OF HEPATIC FIBROSIS AMONG YOUNG WOMEN WITH NAFLD.” In Hepatology, 72:65A-65A, 2020.
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    • Pryor, Aurora, Ning Jiang, Eric J. DeMaria, Dana D. Portenier, Ranjan Sudan, and Alfonso Torquati. “Duet TRSTM Reload Is A Preloaded Absorbable Reinforcement Material On An Endoscopic Stapler That Is Straightforward And Effective For Gastric Pouch Creation.” In Obesity Surgery, 20:984–984. SPRINGER, 2010.
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    • Perez, Alexander, Eric J. DeMaria, Dana D. Portenier, John P. Grant, and Aurora D. Pryor. “Gastrojejunal (GJ) leak after laparoscopic roux-en-Y gastric bypass (LRYGB) carries minimal risk with an aggressive detection/management approach, whereas greater morbidity/mortality occurs with leak at the jejunojejunostomy (jj).” In Gastroenterology, 134:A909–A909. W B SAUNDERS CO-ELSEVIER INC, 2008.
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