Adrian E. Ortega, MD

Title(s)Clinical Professor of Surgery (Clinician Educator)
SchoolKeck School of Medicine of Usc
Address2051 Marengo St.
Off Campus
Los Angeles CA 90033
Phone+1 323 226 7792
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    Dr. Ortega graduated from the Harvard Medical School in Boston, MA and completed his surgical training here at the University of Southern California. After a time in private practice, he went on to complete his training in colorectal surgery at USC, then joined the faculty. Dr. Ortega works primarily out of the LAC+USC Medical Center, serving as a mentor, teacher, and supervisor of fellows, residents, and medical students in training.

    Dr. Ortega's major areas of research interests include Diverticular disease, Anorectal Conditions, and Colon and Rectal Cancer.

    Collapse Bibliographic 
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. LigaSure™ haemorrhoidectomy and the risk of postoperative bleeding. Colorectal Dis. 2021 10; 23(10):2699-2705. Wlodarczyk JR, Yoon D, Lai R, Ault G, Ortega A, Lee SW, Cologne KG, Koller S. PMID: 34252247.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    2. Adaptive mHealth Intervention for Adolescent Physical Activity Promotion. J Pediatr Psychol. 2021 06 03; 46(5):536-546. Cushing CC, Bejarano CM, Ortega A, Sayre N, Fedele DA, Smyth JM. PMID: 33484137.
      View in: PubMed   Mentions: 8     Fields:    Translation:HumansCTClinical Trials
    3. Outcomes of colostomy takedown following Hartmann's procedure: successful restoration of continuity comes with a high risk of morbidity. Colorectal Dis. 2021 Apr; 23(4):967-974. Mirza KL, Wickham CJ, Noren ER, Hwang GS, Ault GT, Ortega AE, Jafari MD, Cologne KG. PMID: 33231908.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    4. Differences in adolescent activity and dietary behaviors across home, school, and other locations warrant location-specific intervention approaches. Int J Behav Nutr Phys Act. 2020 09 29; 17(1):123. Ortega A, Bejarano CM, Cushing CC, Staggs VS, Papa AE, Steel C, Shook RP, Sullivan DK, Couch SC, Conway TL, Saelens BE, Glanz K, Frank LD, Cain KL, Kerr J, Schipperijn J, Sallis JF, Carlson JA. PMID: 32993715; PMCID: PMC7526379.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    5. Current Advances in Colorectal Surgery in Latin America: Insights on the 2019 Latin American Association of Coloproctology Congress. Dis Colon Rectum. 2020 09; 63(9):1223-1224. Valente M, Silva-Velazco J, Ortega AE. PMID: 33216492.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    6. Responsive Asthma Care for Teens (ReACT): development protocol for an adaptive mobile health intervention for adolescents with asthma. BMJ Open. 2019 08 20; 9(8):e030029. Cushing CC, Fedele DA, Patton SR, McQuaid EL, Smyth JM, Prabhakaran S, Gierer S, Koskela-Staples N, Ortega A, Fleming KK, Nezu AM. PMID: 31434777; PMCID: PMC6707700.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    7. Selected Techniques of Anal Fistula Surgery from Antiquity Through the Early 20th Century Illustrated. Dis Colon Rectum. 2017 Jun; 60(6):636-646. Ortega AE, Gesek A, Linnebur M, Cologne KG. PMID: 28481858.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    8. Treatment-Based Three-Dimensional Classification and Management of Anorectal Infections. World J Surg. 2017 02; 41(2):574-589. Ortega AE, Cologne KG, Shin J, Lee SW, Ault GT. PMID: 27766401.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    9. Factors Associated with a Short (<2 Days) or Long (>10 Days) Length of Stay after Colectomy: A Multivariate Analysis of over 400 Patients. Am Surg. 2016 Oct; 82(10):960-963. Cologne KG, Byers S, Rosen DR, Hwang GS, Ortega AE, Ault GT, Lee SW. PMID: 27779983.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    10. Operative management of diverticulitis in a tertiary care center. Am J Surg. 2017 Jul; 214(1):37-41. Rosen DR, Hwang GS, Ault GT, Ortega AE, Cologne KG. PMID: 27745889.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    11. Requiem on the Deep Postanal Space and Supralevator Abscesses. Dis Colon Rectum. 2016 07; 59(7):e409. Ortega AE. PMID: 27270526.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. The Author Replies. Dis Colon Rectum. 2016 May; 59(5):e42. Ortega AE. PMID: 27050613.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    13. Elective versus emergency surgery for ulcerative colitis: a National Surgical Quality Improvement Program analysis. Am J Surg. 2013 Mar; 205(3):333-7; discussion 337-8. Patel SS, Patel MS, Goldfarb M, Ortega A, Ault GT, Kaiser AM, Senagore AJ. PMID: 23369311.
      View in: PubMed   Mentions: 18     Fields:    Translation:Humans
    14. Recurrent drug-induced ANCA vasculitis in a patient with Crohn's colitis treated with infliximab: a potential contraindication to immunosuppressive therapy. Am Surg. 2012 Dec; 78(12):1406-8. Rosen DR, Cologne KG, Popek SM, Sung BC, Ortega AE, Senagore AJ. PMID: 23265134.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    15. Laparoscopic versus open colon resections in California: a cross-sectional analysis. Am Surg. 2012 Oct; 78(10):1063-5. Patel SS, Patel MS, Mahanti S, Ortega A, Ault GT, Kaiser AM, Senagore AJ. PMID: 23025941.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    16. Current controversies in the management of colon cancer. Curr Probl Surg. 2012 Jul; 49(7):398-460. Patel SS, Floyd A, Doorly MG, Ortega AE, Ault GT, Kaiser AM, Senagore AJ. PMID: 22682507.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    17. Perineal injuries at a large urban trauma center: injury patterns and outcomes. Am Surg. 2009 Apr; 75(4):317-20. Petrone P, Inaba K, Wasserberg N, Teixeira PG, Sarkisyan G, Dubose JJ, Fernández MA, Peña FR, Rodríguez MA, Ortega AE, Kaufman HS. PMID: 19385292.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    18. Assessing the teaching of procedural skills: can cognitive task analysis add to our traditional teaching methods? Am J Surg. 2008 Jan; 195(1):20-3. Sullivan ME, Ortega A, Wasserberg N, Kaufman H, Nyquist J, Clark R. PMID: 18082538.
      View in: PubMed   Mentions: 26     Fields:    Translation:Humans
    19. The prevalence of colorectal neoplasia in patients with end-stage renal disease: a case-control study. Int J Colorectal Dis. 2008 Jan; 23(1):47-51. Lee S, Wasserberg N, Petrone P, Rosca J, Selby R, Ortega A, Kaufman HS. PMID: 17851668.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansPHPublic Health
    20. Pseudoaneurysm of the inferior gluteal artery: an unusual complication after abdominoperineal resection for rectal cancer. Report of a case. Dis Colon Rectum. 2007 Jan; 50(1):115-7. Nunoo-Mensah JW, Ritter MP, Wasserberg N, Ortega A, Harrell D. PMID: 17082894.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    21. Intraoperative physical diagnosis in the management of anal fistula. Am Surg. 2006 Jan; 72(1):11-5. Gonzalez-Ruiz C, Kaiser AM, Vukasin P, Beart RW, Ortega AE. PMID: 16494174.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    22. Internet use by colorectal surgery patients: a surgeon's tool for education and marketing. Am Surg. 2004 Jun; 70(6):553-8. Lake JP, Ortega A, Vukasin P, Kaiser AM, Kaufman HS, Beart RW. PMID: 15212415.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    23. Sequential compression devices as prophylaxis for venous thromboembolism in high-risk colorectal surgery patients: reconsidering American Society of Colorectal Surgeons parameters. Am Surg. 2003 Nov; 69(11):941-5. Ramirez JI, Vassiliu P, Gonzalez-Ruiz C, Vukasin P, Ortega A, Kaiser AM, Beart RW. PMID: 14627252.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    24. Use of high-dose-rate brachytherapy in the management of locally recurrent rectal cancer. Dis Colon Rectum. 2003 Jul; 46(7):895-9. Kuehne J, Kleisli T, Biernacki P, Girvigian M, Streeter O, Corman ML, Ortega AE, Vukasin P, Essani R, Beart RW. PMID: 12847362.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    25. Anorectal anatomy. Surg Clin North Am. 2002 Dec; 82(6):1125-38, v. Kaiser AM, Ortega AE. PMID: 12516843.
      View in: PubMed   Mentions: 11     Fields:    Translation:Humans
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    NIH Funding Acknowledgment: Important - All publications resulting from the utilization of SC CTSI resources are required to credit the SC CTSI grant by including the NIH funding acknowledgment and must comply with the NIH Public Access Policy.

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