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Anil Nagar, MD

Associate Professor of Medicine (Digestive Diseases)

Contact Information

Anil Nagar, MD

Mailing Address

  • Yale School of Medicine

    Department of Medicine (Digestive Diseases), PO Box 208019

    New Haven, CT 06520-8019

    United States

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Research Summary

I am interested in clinical studies that examine the value of interventions for detecting and treating GI diseases. We have a large clinical practice and some of our present clinical studies include the value of surveillance of Barrett's esophagus, screening intervals for colo-rectal cancer surveillance, interventions to prevent post-ERCP pancreatitis and use of confocal microscopy in management of pre-malignant mucosal GI diseases.

Specialized Terms: Value of interventions for detecting and treating GI diseases

Coauthors

Research Interests

Barrett Esophagus; Digestive System Diseases; Endoscopy; Gastrointestinal Diseases; Pancreatitis; Colorectal Neoplasms; Microscopy, Confocal

Selected Publications

  • Prevalence of Advanced Colorectal Neoplasia in VeteransImperiale TF, Daggy JK, Imler TD, Sherer EA, Kahi CJ, Larson J, Cardwell J, Johnson CS, Ahnen DJ, Antaki F, Ashley C, Baffy G, Dominitz JA, Hou J, Korsten MA, Nagar A, Promrat K, Robertson DJ, Saini S, Shergill A, Smalley WE. Prevalence of Advanced Colorectal Neoplasia in Veterans Journal Of Clinical Gastroenterology 2021, 55: 876-883. PMID: 34049372, DOI: 10.1097/mcg.0000000000001402.
  • Impact of Neoadjuvant Chemotherapy and Pretreatment Biliary Drainage for Pancreatic Head Ductal AdenocarcinomaSaffo S, Peng C, Salem R, Taddei T, Nagar A. Impact of Neoadjuvant Chemotherapy and Pretreatment Biliary Drainage for Pancreatic Head Ductal Adenocarcinoma Digestive Diseases And Sciences 2021, 67: 1409-1416. PMID: 33811566, DOI: 10.1007/s10620-021-06967-7.
  • Mo1647 POST-POLYPECTOMY SURVEILLANCE INTERVAL CAN BE EXTENDED TO 5 YEARS AFTER REMOVAL OF THREE TO SIX COLON ADENOMASOhm J, Vance S, Tran A, Nagar A. Mo1647 POST-POLYPECTOMY SURVEILLANCE INTERVAL CAN BE EXTENDED TO 5 YEARS AFTER REMOVAL OF THREE TO SIX COLON ADENOMAS Gastrointestinal Endoscopy 2020, 91: ab434-ab435. DOI: 10.1016/j.gie.2020.03.2841.
  • Mo1679 PATHOLOGICAL EXAMINATION OF RESECTED POLYPS IDENTIFIES FEATURES PREDICTIVE OF POST-POLYPECTOMY BLEEDINGNagar A, Vance S, Rao A. Mo1679 PATHOLOGICAL EXAMINATION OF RESECTED POLYPS IDENTIFIES FEATURES PREDICTIVE OF POST-POLYPECTOMY BLEEDING Gastrointestinal Endoscopy 2019, 89: ab518. DOI: 10.1016/j.gie.2019.03.869.
  • Sa1354 – Sex and Age Disparities in Pancreatic Cancer SurvivalChung S, Nagar A, Kolodecik T, Shugrue C, Desir G, Gorelick F, Protiva P. Sa1354 – Sex and Age Disparities in Pancreatic Cancer Survival Gastroenterology 2019, 156: s-324. DOI: 10.1016/s0016-5085(19)37641-3.
  • Mo1713 USE OF A VALIDATED BOWEL PREPARATION QUESTIONAIRE TO EVALUATE TOLERABILITY OF TWO LARGE VOLUME PURGES IN PATIENTS FOR AT RISK FOR POOR BOWEL PREPARATIONNagar A, Vance S. Mo1713 USE OF A VALIDATED BOWEL PREPARATION QUESTIONAIRE TO EVALUATE TOLERABILITY OF TWO LARGE VOLUME PURGES IN PATIENTS FOR AT RISK FOR POOR BOWEL PREPARATION Gastrointestinal Endoscopy 2018, 87: ab491. DOI: 10.1016/j.gie.2018.04.2071.
  • Tu1235 Self-Expanding Metal Stents (SEMS) Versus Percutaneous Gastrostomy (PEG) Tubes in Patients With Esophageal Cancer Undergoing Neoadjuvant TherapyNagar A, Vance S. Tu1235 Self-Expanding Metal Stents (SEMS) Versus Percutaneous Gastrostomy (PEG) Tubes in Patients With Esophageal Cancer Undergoing Neoadjuvant Therapy Gastrointestinal Endoscopy 2017, 85: ab590. DOI: 10.1016/j.gie.2017.03.1372.
  • Endoscopic Submucosal DissectionNagar A. Endoscopic Submucosal Dissection 2017, 47-59. DOI: 10.1007/978-3-319-50610-4_4.
  • An Electronic Medical Record-based Scoring System for Estimating the Risk of Advanced Colorectal Neoplasia in Veterans: 2016 ACG Category Award (CRC Prevention)Imperiale T, Imler T, Sherer E, Kahi C, Larson J, Cardwell J, Johnson C, Antaki F, Ashley C, Baffy G, Cho I, Dominitz J, Hou J, Korsten M, Nagar A, Patel S, Promrat K, Robertson D, Saini S, Shaw R, Shergill A, Smalley W. An Electronic Medical Record-based Scoring System for Estimating the Risk of Advanced Colorectal Neoplasia in Veterans: 2016 ACG Category Award (CRC Prevention) The American Journal Of Gastroenterology 2016, 111: s105-s106. DOI: 10.14309/00000434-201610001-00223.
  • Risk Factors for Advanced Colorectal Neoplasia in VeteransImperiale T, Imler T, Sherer E, Kahi C, Larson J, Cardwell J, Johnson C, Antaki F, Ashley C, Baffy G, Cho I, Dominitz J, Hou J, Korsten M, Nagar A, Patel S, Promrat K, Robertson D, Saini S, Shaw R, Shergill A, Smalley W. Risk Factors for Advanced Colorectal Neoplasia in Veterans The American Journal Of Gastroenterology 2016, 111: s136-s137. DOI: 10.14309/00000434-201610001-00292.
  • Sa1046 Heparin Bridge Therapy Compared to Interruption of Anticoagulation for Colonoscopy PolypectomyMcCarty T, Bakhit M, Klavan H, Njei B, Jadbabaie F, Nagar A. Sa1046 Heparin Bridge Therapy Compared to Interruption of Anticoagulation for Colonoscopy Polypectomy Gastrointestinal Endoscopy 2016, 83: ab216. DOI: 10.1016/j.gie.2016.03.269.
  • Quantification of Adequate Bowel Preparation for Screening or Surveillance Colonoscopy in MenClark BT, Protiva P, Nagar A, Imaeda A, Ciarleglio MM, Deng Y, Laine L. Quantification of Adequate Bowel Preparation for Screening or Surveillance Colonoscopy in Men Gastroenterology 2015, 150: 396-405. PMID: 26439436, PMCID: PMC4728019, DOI: 10.1053/j.gastro.2015.09.041.
  • Su1706 Confocal LASER Endomicroscopy Features of Sessile Serrated Adenomas/PolypsParikh N, Gibson J, Nagar A, Aslanian H. Su1706 Confocal LASER Endomicroscopy Features of Sessile Serrated Adenomas/Polyps Gastrointestinal Endoscopy 2015, 81: ab385. DOI: 10.1016/j.gie.2015.03.1555.
  • Mo1484 Endoscopic Ultrasound (EUS) Is Superior to Esophagogastroduodenoscopy (EGD) and Esophageal Capsule Endoscopy (ECE) for Varices ScreeningAbdi T, Marino D, Imaeda A, Chung C, Protiva P, Nagar A. Mo1484 Endoscopic Ultrasound (EUS) Is Superior to Esophagogastroduodenoscopy (EGD) and Esophageal Capsule Endoscopy (ECE) for Varices Screening Gastrointestinal Endoscopy 2015, 81: ab437. DOI: 10.1016/j.gie.2015.03.814.
  • 496 Prevalence of Advanced Colorectal Neoplasia in Veterans: Effects of Age, Sex and RaceImperiale T, Imler T, Kahi C, Larson J, Cardwell J, Johnson C, Ahnen D, Antaki F, Ashley C, Baffy G, Cho I, Dominitz J, Hou J, Korsten M, Nagar A, Promrat K, Robertson D, Saini S, Shergill A, Smalley W. 496 Prevalence of Advanced Colorectal Neoplasia in Veterans: Effects of Age, Sex and Race Gastroenterology 2015, 148: s-95. DOI: 10.1016/s0016-5085(15)30328-0.
  • Multi-Center Colonoscopy Quality Measurement Utilizing Natural Language ProcessingImler TD, Morea J, Kahi C, Sherer EA, Cardwell J, Johnson CS, Xu H, Ahnen D, Antaki F, Ashley C, Baffy G, Cho I, Dominitz J, Hou J, Korsten M, Nagar A, Promrat K, Robertson D, Saini S, Shergill A, Smalley W, Imperiale TF. Multi-Center Colonoscopy Quality Measurement Utilizing Natural Language Processing The American Journal Of Gastroenterology 2015, 110: 543. PMID: 25756240, DOI: 10.1038/ajg.2015.51.
  • Tu1482 Protocol of Same Day CT Colonography After Incomplete Colonoscopy Is Well Tolerated and Reduces the Number of Repeat ExaminationsKlavan H, Nagar A, Taylor C. Tu1482 Protocol of Same Day CT Colonography After Incomplete Colonoscopy Is Well Tolerated and Reduces the Number of Repeat Examinations Gastrointestinal Endoscopy 2014, 79: ab556. DOI: 10.1016/j.gie.2014.02.928.
  • Bleeding From a Duodenal VarixKinzel J, Pichetshote N, Dredar S, Aslanian H, Nagar A. Bleeding From a Duodenal Varix Journal Of Clinical Gastroenterology 2014, 48: 362-364. PMID: 24518801, DOI: 10.1097/mcg.0000000000000004.
  • Mo1107 Adherence to Quality of Care Measures in Patients With Inflammatory Bowel Disease Is Not Associated With Improved Patient OutcomesKumar V, Grant T, Nagar A. Mo1107 Adherence to Quality of Care Measures in Patients With Inflammatory Bowel Disease Is Not Associated With Improved Patient Outcomes Gastroenterology 2013, 144: s-580. DOI: 10.1016/s0016-5085(13)62141-1.
  • 1171 Significance of Incidental Gastrointestinal (GI) Tract Lesions Identified by Positron Emission Tomography (PET)Singerman J, Tian J, Nagar A. 1171 Significance of Incidental Gastrointestinal (GI) Tract Lesions Identified by Positron Emission Tomography (PET) Gastrointestinal Endoscopy 2012, 75: ab179. DOI: 10.1016/j.gie.2012.04.163.
  • Su1431 Examining the Validity and Utility of a Computerized ERCP SimulatorSahakian A, Siddiqui U, Mehra M, Nagar A, Jamidar P, Aslanian H. Su1431 Examining the Validity and Utility of a Computerized ERCP Simulator Gastrointestinal Endoscopy 2011, 73: ab263-ab264. DOI: 10.1016/j.gie.2011.03.484.
  • Barrett's Surveillance Identifies Patients with Early Esophageal AdenocarcinomaWong T, Tian J, Nagar AB. Barrett's Surveillance Identifies Patients with Early Esophageal Adenocarcinoma The American Journal Of Medicine 2010, 123: 462-467. PMID: 20399324, DOI: 10.1016/j.amjmed.2009.10.013.
  • Acute PancreatitisNagar A, Pandol S. Acute Pancreatitis 2009, 514-533. DOI: 10.1002/9781444303414.ch45.
  • Prevention of post-ERCP pancreatitis: a little antacid might go a long wayNagar AB, Gorelick F. Prevention of post-ERCP pancreatitis: a little antacid might go a long way Gut 2008, 57: 1492. PMID: 18941003, DOI: 10.1136/gut.2008.157289.
  • Ethanol Exposure Depletes Hepatic Pigment Epithelium-Derived Factor, a Novel Lipid RegulatorChung C, Shugrue C, Nagar A, Doll JA, Cornwell M, Gattu A, Kolodecik T, Pandol SJ, Gorelick F. Ethanol Exposure Depletes Hepatic Pigment Epithelium-Derived Factor, a Novel Lipid Regulator Gastroenterology 2008, 136: 331-340.e2. PMID: 18996124, PMCID: PMC2833423, DOI: 10.1053/j.gastro.2008.09.065.
  • S1030 Colonoscopy Surveillance After Polypectomy May Be Extended to 7 YearsMiller H, Mukherjee R, Tian J, Nagar A. S1030 Colonoscopy Surveillance After Polypectomy May Be Extended to 7 Years Gastroenterology 2008, 134: a-162. DOI: 10.1016/s0016-5085(08)60754-4.
  • 957 Pediatric Pancreatitis: Epidemiology, Etiologies, and Recurrence, a Retrospective StudyLatif S, Park A, Shah A, Tian J, Hsiao A, Pashankar D, Bhandari V, Nagar A, Husain S. 957 Pediatric Pancreatitis: Epidemiology, Etiologies, and Recurrence, a Retrospective Study Gastroenterology 2008, 134: a-141. DOI: 10.1016/s0016-5085(08)60657-5.
  • Successful Multimodality Endoscopic Treatment of Gastric Outlet Obstruction Caused by an Impacted Gallstone (Bouveret's Syndrome)Rogart JN, Perkal M, Nagar A. Successful Multimodality Endoscopic Treatment of Gastric Outlet Obstruction Caused by an Impacted Gallstone (Bouveret's Syndrome) Diagnostic And Therapeutic Endoscopy 2007, 2008: 471512. PMID: 18493330, PMCID: PMC2239211, DOI: 10.1155/2008/471512.
  • Isolated colonic ulcers: Diagnosis and managementNagar AB. Isolated colonic ulcers: Diagnosis and management Current Colorectal Cancer Reports 2007, 9: 422-428. PMID: 17991345, DOI: 10.1007/s11894-007-0053-9.
  • Successful Multi-Modality Endoscopic Treatment of Bouveretʼs Syndrome without SurgeryRogart J, Perkal M, Nagar A. Successful Multi-Modality Endoscopic Treatment of Bouveretʼs Syndrome without Surgery The American Journal Of Gastroenterology 2007, 102: s298-s299. DOI: 10.14309/00000434-200709002-00497.
  • Most Esophageal Adenocarcinomas Are Missed By Routine Surveillance ProgramsWong T, Tian J, Nagar A. Most Esophageal Adenocarcinomas Are Missed By Routine Surveillance Programs Gastrointestinal Endoscopy 2007, 65: ab134. DOI: 10.1016/j.gie.2007.03.150.
  • Epidemiology and Pathophysiology of Acute PancreatitisNagar A, Gorelick F. Epidemiology and Pathophysiology of Acute Pancreatitis 2005, 3-15. DOI: 10.1385/1-59259-815-3:003.
  • Biliary strictures in pancreatic diseaseNagar A. Biliary strictures in pancreatic disease Techniques And Innovations In Gastrointestinal Endoscopy 2002, 4: 113-119. DOI: 10.1053/tgie.2002.34861.
  • AGA gastroenterology teaching project: Pancreatic Physiology and: Acute Pancreatitis Senior author: Fred Gorelick MD. Co-authors: Anil Nagar, Lars Fischer. Steven Pandol, Guillermo Robles-Diaz, Akihiko Sato and Mark Topazian.AGA gastroenterology teaching project: Pancreatic Physiology and: Acute Pancreatitis Senior author: Fred Gorelick MD. Co-authors: Anil Nagar, Lars Fischer. Steven Pandol, Guillermo Robles-Diaz, Akihiko Sato and Mark Topazian.
  • Nagar AB, Gorelick F. Acute Pancreatitis in Yamada Atlas of Gastroenterology. 2002 Ed. T. Yamada. pp 500 –510. Lippincott, Williams, and Wilkins, Philadelphia. Nagar AB, Gorelick F. Acute Pancreatitis in Yamada Atlas of Gastroenterology. 2002 Ed. T. Yamada. pp 500 –510. Lippincott, Williams, and Wilkins, Philadelphia.
  • Nagar AB, Gorelick F. Acute Pancreatitis, in Advanced Therapy in Gastroenterology and Liver Disease 5 Ed, 2004 Editors Bayless, Diehl Nagar AB, Gorelick F. Acute Pancreatitis, in Advanced Therapy in Gastroenterology and Liver Disease 5 Ed, 2004 Editors Bayless, Diehl
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