Gastroenterology & Hepatology

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Kulwinder S. Dua, MD
Professor

Doctor of Medicine (MD)
Nagpur, India, 1976
Fellowship
Internal Medicine, Aberdeen Royal Infirmary, Aberdeen UK, 1983
Residency
Royal College of Physicians, London, UK, 1984
Fellowship
Gastroenterology, Aberdeen Royal Infirmary, Aberdeen UK, 1984-1987

 Clinical Interests & Patient Appointments

 

PUBLICATIONS (To view complete Curriculum Vitae, click here)

Manuscripts

  1. Dube GK, Waghela JD, Dua K, Chaubey BS: Juvenile pernicious anaemia - a case report. Indian Medical Gazette, CXV:282-284; 1981.

  2. Dua K, Brunt PW: Chronic hepatitis. Physician India, 3:515-521;1986.

  3. Dua K, Mowat NAG: Familial Crohn's disease, including spouse. Scottish Medical Journal, 33:372-73;1988.

  4. Koruth NM, Dua K, Brunt PW, Matheson NA: Comparison of highly selective vagotomy with truncal vagotomy and pyloroplasty: results at 8-10 years. British Journal of Surgery, 77:70-71;1990.

  5. Shah S, Dua K, Zubaidi G: Therapeutic endoscopies - our experience in Oman. Oman Medical Gazette, VII:2-5;1990.

  6. Sharma S, Dua K, Zubaidi G: Acute upper gastrointestinal bleeding in Omani patients. Oman Medical Gazette, VII:29-30;1990.

  7. Shabir S, Dua K, Zubaidi G: Two year experience of esophageal variceal sclerotherapy in Oman. Oman Medical Gazette, VII:6-9;1990.

  8. Trifan A, Shaker R, Ren J, Mital RK, Saeian K, Dua K, Kusano M: Inhibition of resting lower esophageal sphincter pressure by pharyngeal water stimulation in humans. Gastroenterology, 108:441-446;1995.

  9. Ren J, Shaker R, Kusano M, Podvrsan B, Metwally N, Dua K, Sui K: Effect of aging on secondary esophageal peristalsis: presbyesophagus revisited. Am J Physiol, 268 (Gastrointest. Liver Physiol 31):G772-G779;1995.

  10. Dua K, Shaker R, Ren J, Arndorfer R, Hofmann C: Mechanism and timing of nasopharyngeal closure during swallowing and belching. Am J Physiol, 268 (Gastrointest. Liver Physiol 31): G1037-G1042;1995.

  11. Dua K, Shaker RS, Stewart E: Esophageal intramural pseudo-diverticulosis in a patient with achalasia. Am J Gastroenterol, 91:1859-1860;1996.

  12. Dean R, Shaker R, Dua K, Massey B, Berger W, Hogan WJ: A comparative study of unsedated transnasal esophagogastroduodenoscopy (T-EGD) and conventional EGD. Gastrointest Endosc, 44:422-424;1996

  13. Dua K, Ruan E, Shaker R: Transnasal pharyngoesophagogastro- duodenoscopy (T-PEGD) in a patient with acute upper gastrointestinal bleeding. Endoscopy, 28:530;1996.

  14. Dua K, Shaker R, Ren J, Podvrsan B, Trifan A: Coordination of deglutitive glottal function and pharyngeal bolus transit during eating and drinking. Gastroenterology, 112:73-83;1997.

  15. Bardan E, Xie P, Ren J, Dua K, Shaker R. Effect of pharyngeal water stimulation on esophageal peristalsis and bolus transport. Am J Physiol (Gastrointest. Liver Physiol), 35:G265-G271;1997.

  16. Dua K, Ren J, Sui Z, Shaker R. Effect of chronic and acute cigarette smoking on the pharyngo-UES contractile reflex and reflexive pharyngeal swallow. Gut,43:537-541;1998.

  17. Saeian K, Townsend WF, Rochling FA, Bardan E, Dua K, Phadnis S, Dunn BE, Darnell K, Shaker R. Unsedated transnasal esophagogastroduodenoscopy (T-EGD): An alternative approach to documenting Helicobacter pylori eradication. Gastrointest Endosc,49:297-301;  1999.

  18. Bardan E, Saeian K, Xie P, Ren J, Kern M, Dua K, Shaker R. Effect of pharyngeal stimulation on the motor function of the esophagus and its sphincters. Laryngoscope, 109:437-441, 1999.

  19. Bardan E, Xie P, Brasseur J, Dua K, Ulualp SO, Kern M, Shaker R.  Effect of ageing on the upper and lower oesophageal sphincters. Eur J Gastroenterol Hepatol 12(11):1221-1225; 2000.

  20. Dua K, Kozarek R, Kim J, Evans J, Medda B, Lang I, Hogan W, Shaker R. Modified self-expanding metal esophageal stent with anti-reflux mechanism. Gastrointestinal Endoscopy. 53:6;603-613;2001.

  21. Dua K. Anti-reflux stent in tumors of cardia. Am J Med 111:190-196;2002.

  22. Shaker R, Dua K, Ren J, Xie P, Funahashi A, Schapira R. Vocal cord closure pressure during volitional swallow and other voluntary tasks. Dysphagia. 17:1;13-18;2002.

  23. Catalano MF, Geenan JE, Lehman G, Seigel J, Jacob L, McKinley MH, Raijman I, Meier P, Jacobson I, Kozarek R, Al-Kawas F, Lo SK, Dua KS, Baillie J, Ginsberg G, Parson W, Meyerson SM, Cohen S, Nelson DB, McHattie JD, Carr-Locke DL. “Tannenbaum” teflon stents Vs traditional polyethylene stents for treatment of malignant biliary strictures. Gastrointest Endosc 55:3;354-358;2002.

  24. Dua K, Staff D, Shaker R. Clinical trial report: Therapies for GERD: Long-term Outcomes. Current Gastroenterology Reports. 4(3):183-183;2002.

  25. Dua K, Staff D, Shaker R. Clinical trial report: Endoscopic Suturing for GERD. Current Gastroenterology Reports. 4(3):185-187; 2002.

  26. Dua K, E Bardan, Ren J, Sui Z, Hofmann C, Shaker R. Effect of chronic and acute cigarette smoking on the pharyngo-glottal closure reflex.  Gut 51:771-775;2002.

  27. Nakeeb A, Tran K, Black M, Erickson B, Ritch P, Quebbeman E, Wilson S, Demeure M, Rilling W, Dua K, Pitt H. Improved survival in resected  biliary malignancies. Surgery 132:555-564;2002.

  28. Shaker R, Ren J, Bardan E, Easterling C, Dua K, Xie P, Kern M.  Pharyngoglottal closure reflex: characterization in healthy young, elderly and dysphagic patients with predeglutitive aspiration.  Gerontology 49(1), 12-20;2003.

  29. Sherman S, Lehman G, Earle D, Watkins J, Barnett J, Johanson J,  Freeman M, Geenan J, Ryan M, Parker H, Lazaridis J, Fogel E, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Does prophylactic steroid administration reduce the frequency and severity of post-ERCP pancreatitis? Randomized prospective multicenter study. Gastrointest Endosc 58(1): 23-29, 2003.

  30. Jean M, Dua K. Ampullary Tumors. Current Gastroenterology Reports. 5(2):171-175, 2002.

  31. Dua K. New approach to malignant strictures of the esophagus. Current Gastroenterology Reports 5(3):198-205, 2003.

  32. E Dieperink, SB Ho, LT Thuras, K Dua, ML Willenbring. Suicidal ideation during interferon-α2b and ribavirin treatment of patients with chronic hepatitis C. General Hospital Psychiatry 26:237-40, 2004

  33. Jean M, Dua K. Barrett’s Esophagus, Best of DDW. Current Gastroenterology Reports. 6(3);202-5, 2004.

  34. T Attila. RS Hellman, AZ Krasnow, CL Hofmann, K Saeian, KS Dua, DG Binion, R Shaker. Feasibility and safety of endoscopic evaluation of gastric emptying. Endoscopy  37(3):240-3, 2005.

  35. JS Bajaj, KS Spinelli, KS Dua. Postoperative management of noniatrogenic traumatic bile duct injuries: role of endoscopic retrograde cholangiopancreaticography. Surg Endosc 20(6):974-7, 2006.

  36. MA Iqbal, EJ Lawatsch, DJ Coyle, JJ Rowe, R Li, KS Dua, MS Kochar. Signet-ring cell carcinoma of the urinary bladder mimicking retroperitoneal fibrosis. WMJ 105(3):55-8, 2006.

  37. CL Cheng, S Sherman, JL Watkins, J Barnett, M Freeman, J Geenen, M Ryan, H Parker, JT Frakes, EL Fogel, WB  Silverman, KS Dua, G Aliperti, P Yakshe, M Uzer, W Jones, J Goff, L Lazzell-Pannell, A Rashdan, M Temkit, GA Lehman. Risk factors for post-ERCP pancreatitis: a prospective multicenter study. Am J Gastroenterol 101(1):139-47, 2006.

  38. JS Bajaj, S Bajaj S, KS Dua, S Jaradeh, T Rittmann, C Hofmann, R Shaker R. Influence of sleep stages on esophago-upper esophageal sphincter contractile reflex and secondary esophageal peristalsis. Gastroenterology 130(1):17-25, 2006.

  39. Dua K, Self-expanding metal esophageal stents for palliating malignant dysphagia and fistula: Is the paradigm shifting? Gastrointest Endosc, 65(1):77-81, 2007.

  40. Dua K, Bajaj J, Ritmann T, Hofmann C Shaker R. Safety and Feasibility of Evaluating Airway Protective Reflexes During Sleep: New Technique and Preliminary Results Gastrointest Endosc 65(3):483-86, 2007.

  41. Bajaj JS, Dua KS. The role of endoscopy in noniatrogenic injuries of the liver. Curr Gastroenterol Rep 2007;9:147-50, 2007

  42. Kiely M, Dua K, Rich P, Erickson E, Pitt H. Palliative stenting for late malignant gastric outlet obstruction. J Gastrointest Surg 11:107-13, 2007.

  43. Bajaj JS, Dua KS, Hanson K, Presberg K. Prospective, randomized trial comparing effect of oral versus intravenous pantoprazole on rebleeding after nonvariceal upper gastrointestinal bleeding: a pilot study. Dig Dis Sci 52:2190-4, 2007.

  44. Dua KS, Reddy ND, Rao VG, Banerjee R, Medda B, Lang. Impact of reducing duodenobiliary reflux on biliary stent patency: an in vitro evaluation and a prospective randomized clinical trial that used a biliary stent with an antireflux valve. Gastrointest Endosc 65:819-28, 2007.

  45. Tipnis NA, Dua KS, Werlin SL. A retrospective assessment of magnetic resonance cholangiopancreatography in children. J Pediatr Gastroenterol Nutr  46:59-64, 2008.

 

Abstracts

  1. Dua KS, Koruth NM, Brunt PW, Matheson NA: Is highly selective vagotomy a good operation for duodenal ulcer ? A longer look at the answer. Gut 8:1374, 1987.

  2. Dua KS, Godden D, Sinclair TS, Brunt PW, Mowat NAG: Atopic status, bronchial reactivity to inhaled histamine and pulmonary function in patients with inflammatory bowel disease (IBD). Proceeding of the International Congress on `Clinical Controversies in Inflammatory Bowel Diseases', 85, 1987.

  3. Dua KS, Mowat NAG, Sinclair TS, Brunt PW: Mouth to cecum transit time as determined by the lactulose hydrogen breath test. Proceedings of the Holland Digestive Disease Week, 124-125, 1989.

  4. Dua KS, Mowat NAG, Sinclair TS, Brunt PW: Reproducibility of orocecal transit time in the fasting and fed states as measured by the lactulose hydrogen breath test. Proceedings of the World Congress of Gastroenterology, PP710, 1990.

  5. Dua KS, Devi L, Zubaidi G: Prevalence of helicobacter pylori and antral gastritis in Omani patients. Proceedings of the World Congress of Gastroenterology, PD81, 1990.

  6. Dua KS, Devi L, Zubaidi G: Helicobacter pylori (as determined by histology, serology and CLO tests) and antral gastritis in Omani patients with duodenal ulcer. Journal of Gastroenterology & Hepatology, 6:92, 1991.

  7. Dua KS, Shaker R, Lui J, Ren J, Arndorfer R, Hofmann C: Mechanism and timing of nasopharyngeal closure during swallowing and belching. Gastrointestinal Motility, 5:187, 1993.

  8. Shaker R, Massey BT, Ren J, Hogan WJ, Dua KS, Arndorfer R, Hofmann C: A preliminary report on the glottal protective closure response to esophageal air distention in achalasia patients. Gastrointestinal Motility, 5:216, 1993.

  9. Dua KS, Shaker R, Hofmann C, Arndorfer R: Coordination of deglutitive nasopharyngeal closure with oropharyngeal swallowing events. Gastroenterology, 104:499, 1993.

  10. Shaker R, Podvrsan, Ren J, Metwally N, Dua K, Sui Z: Effect of aging on secondary esophageal peristalsis: presbyesophagus revisited. Gastroenterology, 104:646, 1993.

  11. Dua K, Shaker R, Ren J, Podvrsan B, Trifan A: Coordination of deglutitive glottal function and pharyngeal bolus transit during eating and drinking. Gastroenterology, 106:490, 1994.

  12. Dua KS, Shaker R, Dean RS, Ren J, Trifan A, Bansal P: Functional evaluation of the pharynx and esophagus by unsedated  transnasal endoscopy: a pilot study.  Gastroenterology, 106:490, 1994.

  13. Trifan A, Shaker R, Ren J, Dua K, Sui Z:  Comparison of pharyngeal peristalsis during primary and secondary swallows. Gastroenterology, 106:580, 1994.

  14. Trifan A, Shaker R, Ren J, Mital R, Saeian K, Dua K, Sui K: Inhibition of resting lower esophageal sphincter pressure by pharyngeal water stimulation in man. Gastroenterology, 106:580, 1994.

  15. Ren J, Shaker R, Dua K, Trifan A, Podvrsan B, Sui Z: Glottal adduction response to pharyngeal water stimulation: evidence of pharyngoglottal closure reflex. Gastroenterology, 106:558, 1994.

  16. Dua KS, Shaker R, Dean RS, Ren J, Trifan A, Bansal P: Functional evaluation of the pharynx and esophagus by unsedated transnasal endoscopy: a pilot study. Proceeding of the World Congress of Gastroenterology, 1994.

  17. Trifan A, Shaker R, Ren J, Mital R, Saeian K, Dua K, Sui K: Inhibition of resting lower esophageal sphincter pressure by pharyngeal water stimulation in man. Proceeding of the World Congress of Gastroenterology, 1994.

  18. Ren J, Shaker R, Dua K, Trifan A, Podvrsan B, Sui Z: Glottal adduction response to pharyngeal water stimulation: evidence of pharyngoglottal closure reflex. Proceeding of the World Congress of Gastroenterology, 1994.

  19. Saeian K, Shaker R, Sharma P, Trifan A, Ren J, Sui Z, Dua K: Effect of aging on lower esophageal sphincter pressure (LESP) response to pharyngeal water stimulation.  Gastroenterology, 106:630, 1994.

  20. Shaker R, Dean R, Dua K, Massey B, Berger W, Hogan W: Unsedated transnasal esophago-gastroduodenoscopy (T-EGD); an alternative to conventional EGD. Gastrointestinal Endoscopy, 40:73, 1994.

  21. Dua KS, Shaker R, Dean RS, Massey B, Trifan A, Ren J: Transnasal unsedated pharyngoesophagogastroduodenoscopy (T-PEGD) for evaluation of the pharyngeal and esophageal phases of swallowing. Dysphagia, 9:268, 1994.

  22. Shaker R, Ren J, Schapira RM, Dua KS, Sui Z, Funahashi A: Characterization of vocal cords and intratracheal pressure phenomena during swallowing, coughing and phonation. Gastroenterology, 108:688, 1995.

  23. Dua K, Shaker R, Ren J, Sui Z: Effect of smoking on the threshold volume triggering pharyngeal swallow. Gastroenterology, 108:594, 1995.

  24. Bohorfoush AG, Manthey MW, Dua KS, Shaker R, Carron DA, Taylor  AJ: Measurement of Maximum length of endoscopic sphincterotomy: how far can you cut safely? Gastrointest  Endosc, 41:376, 1995.

  25. Bardan E, Xie J, Dua K, Shaker R. Effect of pharyngeal water stimulation on esophageal peristalsis and bolus transport. Gastroenterology, 110:630, 1996.

  26. Dua K, Ren J, Bardan E, Shaker R. Evaluation of lower esophageal sphincter pressure during preparatory phase of normal eating. Gastroenterology, 110:658, 1996.

  27. Sherman S, Lehman G, Earle D, Watkins J, Freeman M, Parker H, Ryan M, Barnett J, Johnson J, Geenan J, Silverman W, Yakshe P, Slivka A, Flueckiger J, Uzer M, Goff J, Dua K, Aliperti G, Jones W. Does prophylactic steroid administration reduce the frequency and severity of post-ERCP pancreatitis? Randomized prospective multicenter study. Gastrointest Endosc, 43:120, 1996.

  28. Dua K, Bardan E, Xie P, Shaker R. Effect of chronic and acute smoking on upper and lower esophageal sphincters and on secondary esophageal peristalsis. Gastroenterology, 110:658, 1996.

  29. Sherman S, Lehman G, Earle D, Watkins J, Barnett J, Johnson J, Freeman M, Geenan J, Ryan M, Parker H, Lazaridis J, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Risk factors for post-ERCP pancreatitis: A prospective multicenter study. Proceedings of the Midwest Gut Club, Annual scientific meeting, Chicago, USA, 1997

  30. Evans J, Bohorfoush AG, Carron D, Shaker R, Dua K. Endoscopic management of bile leaks. Gastrointest Endosc,45:425; 1997.

  31. Sherman S, Lehman G, Earle D, Watkins J, Barnett J, Johnson J,  Freeman M, Geenan J, Ryan M, Parker H, Lazaridis J, Fogel E, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Does prophylactic steroid administration reduce the frequency and severity of post-ERCP pancreatitis? Randomized prospective multicenter study. Gastrointest Endosc,45:561; 1997.

  32. Saeian K, Townsend WF, Rochling FA, Bardan E, Dua K, Darnell K, Shaker R. Unsedated transnasal EGD (T-EGD) documents H. Pylori (HP) eradication. Gastroenterology,112:275; 1997.

  33. Bardan E, Xie P, Hofmann C, Dua K, Arndofer RC, Shaker R. Alteration of anti-reflux barriers in the elderly. Gastroenterology,112:695; 1997.

  34. Sherman S, Lehman G, Earle D, Watkins J, Barnett J, Johanson J,  Freeman M, Geenan J, Ryan M, Parker H, Lazaridis J, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Does obesity increase the incidence and severity of post-ERCP pancreatitis. Gastrointest Endosc, 45:560, 1997

  35. Rochling FA, Dua K, Saeian K, Bohorfoush III AG, Shaker R. Treatment of malignant esophageal stricture and tracheo-esophageal fistula with self-expanding metal stents. Gastrointest Endosc,45:221; 1997.

  36. Dua K, Bardan E, Ren J, Sui Z, Shaker R. Effect of cigarette smoking on pharyngo-glottal closure reflex. Gastroenterology, 112:725; 1997.

  37. Dua K, Bardan E, Ren J, Sui Z, Shaker R. Effect of cigarette smoking on pharyngo-upper esophageal sphincter (UES) contractile reflex. Gastroenterology,112:725; 1997.

  38. Dua K, Rochling F, Saeian K, Shaker R. Use of self-expanding metal stents (SEMS) for palliation of malignant esophageal obstruction/tracheo-esophageal (TE) fistula in patients with previously placed esophageal stents. Gastrointest Endosc, 45:171; 1997.

  39. Sherman S, Lehman G, Earle D, Watkins J, Barnett J, Johanson J, Freeman M, Geenan J, Ryan M, Parker H, Lazaridis J, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Risk factors for Post-ERCP pancreatitis: A prospective multicenter study. Gastrointest Endosc, 45:562; 1997.

  40. Sherman S, Lehman G, Freeman M, Earle D, Watkins J, Barnett J, Johanson J,  Geenan J, Ryan M, Parker H, Lazaridis J, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Uzer M, Jones W, Goff J. Risk factors for post-ERCP pancreatitis: A prospective multicenter study. Am J Gastroenterol, 92:1639; 1997.

  41. Dua K, Medda B, Lang I, Shaker. In vitro and in vivo evaluation of a modified self-expanding metal esophageal stent in preventing gastroesophageal reflux. Minimally Invasive Therapy, 7:15;1998.

  42. Dua K, Ren J, Sui Z, Shaker K. Alteration of pharyngo-upper esophageal sphincter contractile reflex in smokers. Gastroenterology,114:746;1998.

  43. Dua K, Ren J, Sui Z, Shaker K. Effect of cigarette smoking on pharyngoglottal and esophagoglottal closure reflexes. Gastroenterology,114:746;1998.

  44. Sherman S, Lehman G, Freeman M, Watkins J, Barnett J, Fogel E, Johanson J, Geenan J, Ryan M, Parker H, Lazaridis E, Flueckiger J, Silverman W, Dua K, Aliperti G, Yakshe P, Ulzer M, Jones W, Goff J. Risk factors for post-ERCP pancreatitis: A prospective multicenter study. Gastroenterology, 114:497;1998.

  45. Meyerson SM, Geenan JE, Seigel J, Jacob L, McKinley MH, Raijman I, Meier P, Jacobson I, Kozarek R, Lehman G, Al-Kawas F, Lo S, Dua KS, Baillie J, Carr-Locke D, Ginsberg G, Parson W, Hogan WJ. Tannenbaum teflon stents Vs traditional polyethylene stents for treatment of malignant biliary strictures: A multicenter, prospective randomized trial. Gastrointest Endosc,1998.

  46. Dua K, Medda B, Lang I, Shaker R. Modified self-expanding metal esophageal stent with anti-reflux mechanism: in vitro and in vivo evaluation. The Midwest Gut Club, 49;1999.

  47. Abraham C, Dua K, Hofmann C, Arndorfer R, Rayan C, Shaker R. Effect of topical application of an alcohol beverage on the reflexive pharyngeal swallow. Gastroenterology, 116:4;950, 1999.

  48. Hofmann C, Ryan C, Saeian K, Massey B, Dua K, Staff D, Thierfelder S, Hogan W, Shaker R. Prevalence of esophagitis in apparently healthy individuals and GERD patient volunteers for research studies. Gastroenterology, 116:4;188, 1999.

  49. Shaker R, Saeian K, Staff D, Townsend W, Dua K, Rassam P, Mehdi S, Rochling F, Almagro U, Choi H, Lentz M, Berger W. A new approach to surveillance of columnar-lined “Barrett’s” esophagus. Gastroenterology, 116:4;308, 1999

  50. Dua K, Medda B, Lang I, Shaker R. Modified self-expanding metal esophageal stent with anti-reflux mechanism: in vitro and in vivo evaluation. Gastrointest Endosc, 49:4;197, 1999.

  51. Dua K, Abraham C, Hofmann C, Sui Z, Shaker R. Airway protective reflexes in rehabilitated alcoholics. Gastroenterology, 116:4;1081, 1999.

  52. Saeian K, Staff D, Townsend W, Dua K, Berger W, Massey B, Shaker R. A new approach to screening for esophageal varices. Hepatology, 30:4;219, 1999.

  53. Saeian K, Staff D, Townsend W, Dua K, Berger W, Hogan W, Shaker R. T-EGD: A new technique for accurately detecting and grading esophageal varices in cirrhotic patients, Gastrointest Endosc, 51:4;125, 2000.

  54. Dua K, Kozarek R, Kim J, Evans J, Hogan W, Shaker R. Anti-reflux self-expanding metal esophageal stent (AR-SMES): Clinical evaluation in patients with malignant dysphagia. Proceedings of the Mid-West Gut Club, March, 2000.

  55. Saeian K, Staff D, Townsend W, Dua K, Almagro U, Choi H, Komorowski R, Hofmann C, Kim J, Berger W, Shaker. Detection rate of dysplastic Barrett’s mucosa by unsedated transnasal endoscopy (T-EGD) is comparable to conventional endoscopy. Gastroenterology, 118:4;228, 2000.

  56. Dua K, Sui Z, Hofmann C, Shaker R. Adverse effect of smoking on pharyngo-upper esophageal sphincter contractile reflex (PUCR) and reflexive pharyngeal swallow (RPS): central or peripheral mechanism? Gastroenterology, 118:4;407, 2000.

  57. Dua K, Kozarek R, Kim J, Evans J, Hogan W, Shaker R. Anti-reflux self-expanding metal esophageal stent (AR-SMES): Clinical evaluation in patients. Gastrointest Endosc, 51:4;118, 2000.

  58. Dua K, Bajaj J, Sui Z, Hofmann C, Simunceak C, Shaker R. Altered pharyngo-upper esophageal sphincter contractile reflex in patients with gastroesophageal reflux disease. Gastroenterology, 120:5;58, 2001.

  59. Dua K, Shaker R. In vitro evaluation of a modified biliary stent with anti-reflux mechanism. Gastrointest Endosc, 53:5;102,2001.

  60. Tran K, Nakeeb A, Blacj M, Erickson B, Ritch P, Quebbeman E, Wilson S, Demeure M, Rilling W, Dua K, Pitt H. Improved survival in resected biliary malignancies. Central Surgical Association, 2002.

  61. Dua K, Bajaj J, Sui Z, Hofmann C, Shaker R. Altered pharyngo-UES contractile reflex in patients with concomitant esophagitis and laryngitis. Gastroenterology, 122:187;2002

  62. Dua K, Kozarek R, Sakai P et al. Multicenter prospective evaluation of an anti-reflux expandable metal esophageal stent for palliation of malignant dysphagia. Gastrointest Endoscopy 55:221;2002.

  63. Dua K, Bajaj J, Hofmann C, Shaker R. Cigarette Smoking does not Alter Upper Esophageal Sphincter (UES) Contraction and Relaxation Responses to Esophageal Distention. Gastroenterology 124(4):258,2003.

  64. Bajaj J, Dua K, Kawamura O, Easterling C, Rittmann T, Shaker R. Reproducibility of pharyngo-UES contractile reflex and reflexive pharyngeal swallow and magnitude of intra and inter-observer variability. Gastroenterology 124(4):257,2003.

  65. Dua K, Bajaj J, Hofmann C, Rittmann T, Shaker R. Safety and Feasibility of Evaluating Airway Protective Reflexes during Sleep: New Technique and Preliminary Results. Gastroenterology, 124(4):580,2003.

  66. Dua K, Bajaj J, Hofmann C, Rittmann T, Shaker R. Deterioration of Airway Protective Reflexes Accompanied by Absence of Arousal Response to Pharyngeal Water Stimulation: A Recipe for Aspiration. Gastroenterology.  126 (4);633.2004.

  67. Dua K, Bajaj J, Hofmann C, Rittmann T, Shaker R Reversibility of Pharyngo-UES contractile reflex (PUCR) and Reflexive Pharyngeal Swallow (RPS) in Ex-smokers. Gastroenterology.  Gastroenterology. 126 (4); 636-2004.

  68. Bajaj JS, Dua K, Bajaj S, Rittmann T, Shaker R. Effect of Infusion Rate on Elicitation of Pharyngeal Reflexes and Development of Aspiration Among Smokers. Neurogastroenterol Motil 16(5):672;2004.

  69. Shannon J. Graewin, Dua K, Attila Nakeeb, Beth A. Erickson, Paul S. Ritch,  Henry A. Pitt. Palliative Stenting for Late Malignant Gastric Outlet Obstruction DDW Surgey, 2004

  70. Rajesh Santharam, Candy Hofmann, Tanya Rittmann, Caryn Easterling, Mark Kern, Dua K, Reza Shaker. Deleterious Effect of Systemic Alcohol on Reflexive Pharyngeal Swallow and Pharyngo-UES Contractile Reflex. Gastroenterology, 126 (4); 2004.

  71. S Bajaj, K Dua, S Bajaj, T Rittmann, R Shaker. Effect of Infusion Rate on Elicitation of Pharyngeal Reflexes and Development of Aspiration Among Smokers. American Motility Society, 2004

  72. Jasmohan S. Bajaj, Dua K, Shailesh Bajaj, Tanya Rittmann, Reza Shaker. Esophago-Upper Esophageal Sphincter Contractile Reflex (EUCR) and Secondary Esophageal Peristalsis (2º P) During NREM and REM Sleep. Gastroenterology.  126 (4); 632.2004. 

  73. Dua K, JS Bajaj, N. Reddy, G. Rao.  Duodeno-Biliary Reflux May Contribute to Biliary Stent Occlusion:  Prospective Randomized Study of a New Biliary Stent with An Anti-Duodeno-Biliary Reflux Valve in Patients with Biliary Strictures.  Gastroenterology. 128 (4), 407.2005.

  74. Dua K, JS Bajaj, T. Rittmann, R. Shaker.  Differential Response of Aerodigestive Reflexes to Topical Pharyngeal Anesthesia.  Gastroenterology. 126(4), 407-2005.

  75. JS Bajaj, Dua K. Salvage Endoscopic Retrograde Cholangiopancreatography in the Management of Non-Iatrogenic Traumatic Bile Duct Injuries.  Gastroenterology.128(4), 407. 2005.

  76. JS Bajaj, S. Bajaj, Dua K, T. Rittmann, C. Hofmann, R. Shaker.  Influence of Sleep Stages on Elicitation of Esophago-UES Contractile Reflex and Secondary Esophageal Peristalsis.  Gastroenterology 128 (4), 407. 2005.

  77. Raj Santharam, Dua K. Continuous Non-Permanent Dilation of Resilient Non-Peptic Benign Esophageal Strictures Using a Self Expanding Plastic Esophageal Stent ((Polyflex) A Prospective Study.  Gastrointest Endosc 63: AB123, 2006.

  78. Dua K, Bajaj JS, Hanson K, Presberg K. Prospective randomized study comparing the effect of oral versus IV Pantoprazole on 30-day rebleeding rates in patients with acute nonvariceal GI bleed: A pilot study. Gastroenterology 130:A464, 2006.

  79. NA Tipnis, Dua K, JR Sty, SL Werlin. Evaluation of the Utility of Magnetic Resonance Cholangiopancreatography (MRCP) in Children using Endoscopic Retrograde (ERCP), Intra-operative or Percutaneous Cholangiopancreatography as Gold Standards. Pediatric Gastroenterology DDW 2006

  80. Dua K, B Medda, I Lang. In Vitro Evaluation of a Biliary Stent with an Anti-Duodenobiliary Reflux Valve Using Ox Bile Perfused at Physiological Bile Flow Rates.  Gastrointest Endosc 63: AB298, 2006.

  81. Viju Deenadayalu, Ula Blaut, James L. Watkins, Jeffrey L. Barnett, Martin L. Freeman, Joseph E. Geenen, Micahel E. Ryan, Harrison W. Parker, James T. Frakes, Evan Fogel, William B. Silverman, Dua K, Giuseppe Aliperti, Paul N. Yakshe, Michael Uzer, Whitney F. Jones, John S. Goff, M’Hamed Temkit, Glen A Lehman, Stuart Sherman.  Does Obesity Increase the Incidence and Severity of Post-ERCP Pancreatitis?  Gastrointest Endosc 63:AB308, 2006.

  82. JS Bajaj, D Knuff, T Rittmann, K Dua, R Shaker. Presence of acid reduces the threshold for elicitation of EUCR and secondary peristalsis during sleep but not in awake state. Gastroenterology 130:A737, 2006.

  83. Hernandez LV, Dua K, Shaker R. Anatomo-manometric correlation of the pharyngo-esophageal segment: A concurrent endosonographic and manometric study. Am J Gastroenterol A332, 2006

  84. JS Bajaj, D Knuff, T Rittmann, K Dua, R Shaker. Influence of sleep stages on glottal function: Implications for nighttime airway safety. Gastroenterology 130:17-25, 2006.

  85. S Mukewar, S Mukewar and KS Dua. Tuberculosis of the Colon: Endoscopic features with prospective follow-up after anti-tuberculosis treatment. Gastrointest Endosc, 65, 2007, AB253, 2007.

  86. S Lakhtakia, ND Reddy, KS Dua. Refractory benign esophageal strictures: continuous, Non-permanent dilatation with a self-expandable metal esophageal stent (Alimaxx-E) Gastrointest Endosc,  65:AB284, 2007.

  87. Bajaj J, Knuff D, Dua K, Hafeezullah M, Hofmann C, Shaker R. The pH of the proximal esophageal refluxate influences elicitation of aerodigestive reflexes during sleep. Gastroenterology 132:A480, 2007

  88. Bajaj J, Dua K, Kuribayashi S, Hafeezullah M, Hofmann C, Shaker R. Arousal reflex and aerodigestive reflexes: Layers of airway protection against nocturnal reflex during slow-wave sleep. Gastroenterology 132:A482, 2007.

  89. Vijayapal AS, Kiely MJ, Brasel KJ, Dua KS. Expandable metal stents for obstructing lesions of the colon as bridge therapy: An alternative to emergent surgery. Am J Gastroenterol 102:S249, 2007.

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