2024
Coexistent Eosinophilic Esophagitis and Dysplastic Barrett's Esophagus With Rapid Eosinophilic Infiltration of Neosquamous Mucosa After Radiofrequency Ablation
Ameyaw P, Parsons D, Mahmoud A, Marie R, Nagar A, Aslanian H. Coexistent Eosinophilic Esophagitis and Dysplastic Barrett's Esophagus With Rapid Eosinophilic Infiltration of Neosquamous Mucosa After Radiofrequency Ablation. ACG Case Reports Journal 2024, 11: e01488. PMID: 39221230, PMCID: PMC11361630, DOI: 10.14309/crj.0000000000001488.Peer-Reviewed Original ResearchBarrett's esophagusRadiofrequency ablationDysplastic BEEosinophilic esophagitisOutcomes of radiofrequency ablationNeosquamous mucosaAssociation of gastroesophageal reflux diseaseEndoscopic eradication therapyDysplastic Barrett's esophagusGastroesophageal reflux diseaseEradication therapyEosinophil infiltrationReflux diseasePatientsEsophagealEoEEsophagusMucosaAblationRadiofrequency
2023
Endoscopic Ultrasound in Cancer Staging
Aslanian H, Muniraj T, Nagar A, Parsons D. Endoscopic Ultrasound in Cancer Staging. Gastrointestinal Endoscopy Clinics Of North America 2023, 34: 37-49. PMID: 37973230, DOI: 10.1016/j.giec.2023.09.009.Peer-Reviewed Original Research
2021
Prevalence of Advanced Colorectal Neoplasia in Veterans
Imperiale 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.Peer-Reviewed Original ResearchConceptsAdvanced neoplasiaProximal colorectal cancerColorectal cancerVeterans Affairs Medical CenterProximal advanced neoplasiaAdvanced colorectal neoplasiaCross-sectional studyIndependent effectsHigh overall prevalenceRace/ethnicityCRC prevalenceColorectal neoplasiaCRC riskOverall prevalenceMedical CenterDiagnostic subgroupsLogistic regressionPrevalenceAgeVeteransWomenColonoscopyNeoplasiaRiskAdvanced findingsImpact of Neoadjuvant Chemotherapy and Pretreatment Biliary Drainage for Pancreatic Head Ductal Adenocarcinoma
Saffo 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, PMCID: PMC8487432, DOI: 10.1007/s10620-021-06967-7.Peer-Reviewed Original ResearchConceptsNeoadjuvant chemotherapyBiliary drainageDuctal adenocarcinomaSingle-center cohort studyHigh-volume tertiary centerPancreatic head ductal adenocarcinomaBackgroundPancreatic ductal adenocarcinomaUse of chemotherapyMultidisciplinary treatment modelCancer-related deathImplementation of guidelinesDelivery of careElectronic medical recordsResectable diseaseCohort studySurgical complicationsSurvival benefitTertiary centerPostprocedure complicationsPreoperative jaundiceAppropriate indicationsMedical recordsTherapeutic endoscopistsOutcome dataPractice trends
2020
Mo1647 POST-POLYPECTOMY SURVEILLANCE INTERVAL CAN BE EXTENDED TO 5 YEARS AFTER REMOVAL OF THREE TO SIX COLON ADENOMAS
Ohm 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.Peer-Reviewed Original Research
2019
Mo1679 PATHOLOGICAL EXAMINATION OF RESECTED POLYPS IDENTIFIES FEATURES PREDICTIVE OF POST-POLYPECTOMY BLEEDING
Nagar 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.Peer-Reviewed Original ResearchSa1354 – Sex and Age Disparities in Pancreatic Cancer Survival
Chung 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.Peer-Reviewed Original Research
2018
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
Nagar 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.Peer-Reviewed Original Research
2017
Tu1235 Self-Expanding Metal Stents (SEMS) Versus Percutaneous Gastrostomy (PEG) Tubes in Patients With Esophageal Cancer Undergoing Neoadjuvant Therapy
Nagar 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.Peer-Reviewed Original ResearchEndoscopic Submucosal Dissection
Nagar A. Endoscopic Submucosal Dissection. Clinical Gastroenterology 2017, 47-59. DOI: 10.1007/978-3-319-50610-4_4.Peer-Reviewed Original Research
2016
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.Peer-Reviewed Original ResearchRisk Factors for Advanced Colorectal Neoplasia in Veterans
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. Risk Factors for Advanced Colorectal Neoplasia in Veterans. The American Journal Of Gastroenterology 2016, 111: s136-s137. DOI: 10.14309/00000434-201610001-00292.Peer-Reviewed Original ResearchSa1046 Heparin Bridge Therapy Compared to Interruption of Anticoagulation for Colonoscopy Polypectomy
McCarty 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.Peer-Reviewed Original Research
2015
Quantification of Adequate Bowel Preparation for Screening or Surveillance Colonoscopy in Men
Clark 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.Peer-Reviewed Original ResearchConceptsAdequate bowel preparationBBPS scoreSurveillance colonoscopyBowel preparationColon segmentsBBPS scoresSecond examinationWest Haven Veterans Affairs Medical CenterVeterans Affairs Medical CenterFirst examinationGuideline-recommended intervalsProspective observational studyDetection of adenomasIdentification of polypsColonoscopic evaluationPrimary outcomeSurveillance intervalsBlinded endoscopistsColonoscopy examinationObservational studyPrEP scaleMedical CenterInitial examinationStudy subjectsAdequate preparationSu1706 Confocal LASER Endomicroscopy Features of Sessile Serrated Adenomas/Polyps
Parikh 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.Peer-Reviewed Original ResearchMo1484 Endoscopic Ultrasound (EUS) Is Superior to Esophagogastroduodenoscopy (EGD) and Esophageal Capsule Endoscopy (ECE) for Varices Screening
Abdi 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.Peer-Reviewed Original Research496 Prevalence of Advanced Colorectal Neoplasia in Veterans: Effects of Age, Sex and Race
Imperiale 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.Peer-Reviewed Original ResearchMulti-Center Colonoscopy Quality Measurement Utilizing Natural Language Processing
Imler 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.Peer-Reviewed Original ResearchConceptsNatural language processingSurveillance intervalsHyperplastic polypsColorectal cancer screeningColonoscopy surveillance intervalsLarge hyperplastic polypsNumber of adenomasAdenoma detection rateSmall hyperplastic polypsSessile serrated polypsColonoscopy quality measuresLanguage processingManual reviewColonoscopy findingsAdvanced adenomasPrimary outcomePathologic findingsPathology recordsCancer screeningSerrated polypsLesion locationColonoscopy qualityExpert manual review
2014
Tu1482 Protocol of Same Day CT Colonography After Incomplete Colonoscopy Is Well Tolerated and Reduces the Number of Repeat Examinations
Klavan 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.Peer-Reviewed Original ResearchBleeding From a Duodenal Varix
Kinzel 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.Peer-Reviewed Original ResearchConceptsClass C cirrhosisDuodenal varicesEmbolization coilsChild's class C cirrhosisTransjugular intrahepatic portosystemic shuntIntrahepatic portosystemic shuntEUS-guided placementC cirrhosisCyanoacrylate injectionEctopic varicesInitial endoscopyPortosystemic shuntEndoscopic ultrasoundVaricesVariceal hemostasisExcellent hemostasisHemostasisAdvantageous modalityInjectionHematemesisCirrhosisPatientsEndoscopySubsequent attemptsShunt