Harvard Catalyst Profiles

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Leon Naar, M.D.

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Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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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. Mendoza AE, Raju Paul S, El Hechi M, Naar L, Nederpelt C, Mikdad S, van Erp I, Hess JM, Velmahos GC, Poznansky M, Reeves P. Deep immune profiling of whole blood to identify early immune signatures that correlate to patient outcome after major trauma. J Trauma Acute Care Surg. 2021 Jun 01; 90(6):959-966. PMID: 33755643.
    Citations:    Fields:    
  2. Nederpelt CJ, Naar L, Krijnen P, le Cessie S, Kaafarani HMA, Huisman MV, Velmahos GC, Schipper IB. Andexanet Alfa or Prothrombin Complex Concentrate for Factor Xa Inhibitor Reversal in Acute Major Bleeding: A Systematic Review and Meta-Analysis. Crit Care Med. 2021 May 07. PMID: 33967205.
    Citations:    Fields:    
  3. Alser O, Mokhtari A, Naar L, Langeveld K, Breen KA, El Moheb M, Kapoen C, Gaitanidis A, Christensen MA, Maurer LR, Mashbari H, Bankhead-Kendall B, Parks J, Fawley J, Saillant N, Mendoza A, Paranjape C, Fagenholz P, King D, Lee J, Farhat MR, Velmahos GC, Kaafarani HMA. Multisystem outcomes and predictors of mortality in critically ill patients with COVID-19: Demographics and disease acuity matter more than comorbidities or treatment modalities. J Trauma Acute Care Surg. 2021 05 01; 90(5):880-890. PMID: 33891572.
    Citations:    Fields:    Translation:Humans
  4. Mokhtari AK, Maurer LR, Christensen MA, Moheb ME, Naar L, Alser O, Gaitanidis A, Langeveld K, Kapoen C, Breen K, Velmahos GC, Kaafarani HMA. Rhabdomyolysis in Severe COVID-19: Male Sex, High BMI, and Prone Positioning Confer High Risk. J Surg Res. 2021 Apr 06; 266:35-43. PMID: 33975028.
    Citations:    Fields:    
  5. Kokoroskos N, Peponis T, Lee JM, El Hechi M, Naar L, Nederpelt C, Gaitanidis A, Mendoza AE, Saillant N, Kaafarani H, King D, Velmahos G, Fagenholz P. The Role of Transaminases in Predicting Choledocholithiasis. A Novel Predictive Composite Score Development in a Cohort of 1089 Patients Undergoing Laparoscopic Cholecystectomy. Am Surg. 2021 Mar 12; 3134821998664. PMID: 33710916.
    Citations:    Fields:    
  6. AlSowaiegh R, Naar L, Mokhtari A, Parks JJ, Fawley J, Mendoza AE, Saillant NN, Velmahos GC, Kaafarani HMA. Does the Emergency Surgery Score predict failure to discharge the patient home? A nationwide analysis. J Trauma Acute Care Surg. 2021 03 01; 90(3):471-476. PMID: 33055577.
    Citations:    Fields:    Translation:Humans
  7. El Hechi M, Kongkaewpaisan N, Naar L, Aicher B, Diaz J, 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 03 01; 90(3):557-564. PMID: 33507026.
    Citations:    Fields:    Translation:Humans
  8. Kongkaewpaisan N, El Hechi MW, Naar L, Kaafarani HMA. Unplanned readmission after emergency laparotomy: A post hoc analysis of an EAST multicenter study. Surgery. 2021 Jun; 169(6):1434-1440. PMID: 33431187.
    Citations:    Fields:    
  9. Gaitanidis A, Breen K, Naar L, Mikdad S, El Moheb M, Kongkaewpaisan N, El Hechi M, Kaafarani HMA. Performance of the Emergency Surgery Score (ESS) Across Different Emergency General Surgery Procedures. J Surg Res. 2021 May; 261:152-158. PMID: 33429224.
    Citations:    Fields:    
  10. Alser O, Naar L, Christensen MA, Saillant N, Parks J, Mendoza A, Fagenholz P, King D, Kaafarani HMA, Velmahos GC, Fawley J. Preoperative frailty predicts postoperative outcomes in intestinal-cutaneous fistula repair. Surgery. 2021 May; 169(5):1199-1205. PMID: 33408040.
    Citations:    Fields:    
  11. Naar L, El Hechi MW, van Erp IA, Mashbari HNA, Fawley J, Parks JJ, Fagenholz PJ, King DR, Mendoza AE, Velmahos GC, Kaafarani HMA, Saillant NN. Isolated rib cage fractures in the elderly: Do all patients belong to the intensive care unit? A retrospective nationwide analysis. J Trauma Acute Care Surg. 2020 12; 89(6):1039-1045. PMID: 32697447.
    Citations:    Fields:    Translation:Humans
  12. El Moheb M, Naar L, Christensen MA, Kapoen C, Maurer LR, Farhat M, Kaafarani HMA. Gastrointestinal Complications in Critically Ill Patients With and Without COVID-19. JAMA. 2020 Nov 10; 324(18):1899-1901. PMID: 32970139.
    Citations: 12     Fields:    Translation:Humans
  13. Naar L, Yeh DD, Kaafarani H. Reply: Incorporating preoperative computed tomography (CT) scan and colonoscopy in the practice of acute appendicitis patients at high risk for malignancy. Surgery. 2021 May; 169(5):1260. PMID: 33139066.
    Citations:    Fields:    
  14. El Moheb M, Christensen MA, Naar L, Gaitanidis A, Breen K, Alser O, Maurer LR, Gartland RM, Hwabejire JO, Velmahos G, Kaafarani HMA. Comment on "Gastrointestinal Complications in Critically Ill Patients With COVID-19": An Update. Ann Surg. 2020 Oct 14. PMID: 33074881.
    Citations: 2     Fields:    
  15. Naar L, Langeveld K, El Moheb M, El Hechi MW, Alser O, Kapoen C, Breen K, Christensen MA, Mokhtari A, Gaitanidis A, Maurer L, Luckhurst C, Hwabejire JO, Mashbari H, Bankhead-Kendall B, Lee J, Mendoza AE, Saillant NN, Parks J, Fawley J, King DR, Fagenholz PJ, Velmahos GC, Kaafarani HMA. Acute Kidney Injury in Critically-ill Patients With COVID-19: A Single-center Experience of 206 Consecutive Patients. Ann Surg. 2020 10; 272(4):e280-e281. PMID: 32932328.
    Citations:    Fields:    Translation:HumansPHPublic Health
  16. Kokoroskos N, Naar L, Peponis T, Martinez M, El Moheb M, El Hechi M, Alser O, Fuentes E, Velmahos G. Provocative Angiography, Followed by Therapeutic Interventions, in the Management of Hard-To-Diagnose Gastrointestinal Bleeding. World J Surg. 2020 09; 44(9):2944-2949. PMID: 32405731.
    Citations:    Fields:    Translation:Humans
  17. Nederpelt CJ, Naar L, Sylvester KW, Barra ME, Roberts RJ, Velmahos GC, Kaafarani HMA, Rosenthal MG, King DR. Evaluation of oral factor Xa inhibitor-associated extracranial bleeding reversal with andexanet alfa. J Thromb Haemost. 2020 10; 18(10):2532-2541. PMID: 32738161.
    Citations: 1     Fields:    Translation:Humans
  18. Savvidou OD, Koutsouradis P, Kaspiris A, Naar L, Chloros GD, Papagelopoulos PJ. Displaced olecranon fractures in the elderly: outcomes after non-operative treatment - a narrative review. EFORT Open Rev. 2020 Jul; 5(7):391-397. PMID: 32818066.
    Citations:    
  19. Kaafarani HMA, El Moheb M, Hwabejire JO, Naar L, Christensen MA, Breen K, Gaitanidis A, Alser O, Mashbari H, Bankhead-Kendall B, Mokhtari A, Maurer L, Kapoen C, Langeveld K, El Hechi MW, Lee J, Mendoza AE, Saillant NN, Parks J, Fawley J, King DR, Fagenholz PJ, Velmahos GC. Gastrointestinal Complications in Critically Ill Patients With COVID-19. Ann Surg. 2020 08; 272(2):e61-e62. PMID: 32675498.
    Citations: 22     Fields:    Translation:HumansCellsPHPublic Health
  20. Naar L, Kim P, Byerly S, Vasileiou G, Zhang H, Yeh DD, Kaafarani HMA. Increased risk of malignancy for patients older than 40 years with appendicitis and an appendix wider than 10 mm on computed tomography scan: A post hoc analysis of an EAST multicenter study. Surgery. 2020 10; 168(4):701-706. PMID: 32739139.
    Citations: 2     Fields:    Translation:Humans
  21. El Hechi MW, Lee JM, Naar L, El Moheb M, Kokoroskos N, Velmahos GC, Saillant NN, Kaafarani HMA, Mendoza AE. The Effect of Immunosuppression on Emergency Colectomy Outcomes: A Nationwide Retrospective Analysis. World J Surg. 2020 05; 44(5):1637-1647. PMID: 31925522.
    Citations: 1     Fields:    Translation:HumansPHPublic Health
  22. Kaafarani HMA, Moheb ME, Hwabejire JO, Naar L, Christensen MA, Breen K, Gaitanidis A, Alser O, Mashbari H, Bankhead-Kendall B, Mokhtari A, Maurer L, Kapoen C, Langeveld K, El Hechi MW, Lee J, Mendoza AE, Saillant NN, Parks J, Fawley J, King DR, Fagenholz PJ, Velmahos GC. Gastrointestinal Complications in Critically Ill Patients With COVID-19. Ann Surg. 2020 May 01. PMID: 32404678.
    Citations:    
  23. Naar L, Hatzaras I. Liver Resection for Hepatocellular Carcinoma and the Barcelona Clinic Liver Cancer Criteria: Is It Time to Push the Limits? Ann Surg Oncol. 2020 Jul; 27(7):2122-2124. PMID: 32297086.
    Citations:    Fields:    Translation:Humans
  24. Mastoraki A, Schizas D, Charalampakis N, Naar L, Ioannidi M, Tsilimigras D, Sotiropoulou M, Moris D, Vassiliu P, Felekouras E. Contribution of Histone Deacetylases in Prognosis and Therapeutic Management of Cholangiocarcinoma. Mol Diagn Ther. 2020 04; 24(2):175-184. PMID: 32125662.
    Citations: 1     Fields:    Translation:Humans
  25. Kokoroskos N, Peponis T, Lee JM, El Hechi M, Naar L, Elahad JA, Nederpelt C, Bonde A, Meier K, Mendoza A, King D, Fagenholz P, Kaafarani H, Velmahos G, Saillant N. Gallbladder wall thickness as a predictor of intraoperative events during laparoscopic cholecystectomy: A prospective study of 1089 patients. Am J Surg. 2020 10; 220(4):1031-1037. PMID: 32178838.
    Citations:    Fields:    Translation:Humans
  26. Naar L, El Hechi M, Kokoroskos N, Parks J, Fawley J, Mendoza AE, Saillant N, Velmahos GC, Kaafarani HMA. Can the Emergency Surgery Score (ESS) predict outcomes in emergency general surgery patients with missing data elements? A nationwide analysis. Am J Surg. 2020 12; 220(6):1613-1622. PMID: 32102760.
    Citations: 1     Fields:    Translation:HumansPHPublic Health
  27. Mastoraki A, Schizas D, Giannakas T, Papadopoulos PP, Naar L, Vergadis C, Anastasiou I, Vassiliu P, Pikoulis E, Liakakos T. Primary Angiosarcoma of the Kidney: Literature Review of a Rare Nosologic Entity. Anticancer Res. 2020 Feb; 40(2):625-633. PMID: 32014903.
    Citations:    Fields:    Translation:Humans
  28. Schizas D, Mastoraki A, Naar L, Tsilimigras DI, Katsaros I, Fragkiadaki V, Karachaliou GS, Arkadopoulos N, Liakakos T, Moris D. Histone Deacetylases (HDACs) in Gastric Cancer: An Update of their Emerging Prognostic and Therapeutic Role. Curr Med Chem. 2020; 27(36):6099-6111. PMID: 31309879.
    Citations: 5     Fields:    Translation:HumansCells
  29. Mastoraki A, Schizas D, Vergadis C, Naar L, Strimpakos A, Vailas MG, Hasemaki N, Agrogiannis G, Liakakos T, Arkadopoulos N. Recurrent aggressive mesenteric desmoid tumor successfully treated with sorafenib: A case report and literature review. World J Clin Oncol. 2019 Apr 24; 10(4):183-191. PMID: 31114750.
    Citations: 2     
  30. Naar L, Spanomichou DA, Vassiliu P. Comment on "Muscle wasting and survival following pre-operative chemoradiotherapy for locally advanced rectal carcinoma". Clin Nutr. 2019 04; 38(2):962-963. PMID: 30827723.
    Citations:    Fields:    Translation:Humans
  31. Schizas D, Mastoraki A, Naar L, Spartalis E, Tsilimigras DI, Karachaliou GS, Bagias G, Moris D. Concept of histone deacetylases in cancer: Reflections on esophageal carcinogenesis and treatment. World J Gastroenterol. 2018 Nov 07; 24(41):4635-4642. PMID: 30416311.
    Citations: 7     Fields:    Translation:HumansCells
  32. Naar L, Spanomichou DA, Mastoraki A, Smyrniotis V, Arkadopoulos N. Solid Pseudopapillary Neoplasms of the Pancreas: A Surgical and Genetic Enigma. World J Surg. 2017 07; 41(7):1871-1881. PMID: 28251269.
    Citations: 9     Fields:    Translation:HumansCells
  33. Oikonomou E, Vogiatzi G, Papamikroulis GA, Naar L, Siasos G, Mourouzis K, Zografos T, Vavuranakis M, Antonopoulos A, Tousoulis D. Antiplatelet Therapy in Acute Coronary Syndromes. Evidence Based Medicine. Curr Pharm Des. 2016; 22(29):4519-4536. PMID: 27319947.
    Citations: 1     Fields:    Translation:HumansCells
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Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.