Douglas K Rex

Summary

Affiliation: Indiana University
Country: USA

Publications

  1. ncbi request reprint Screening for Barrett's esophagus in colonoscopy patients with and without heartburn
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
    Gastroenterology 125:1670-7. 2003
  2. doi request reprint Optimal withdrawal and examination in colonoscopy
    Douglas K Rex
    Division of Gastroenterology, Department of Medicine, Indiana University Health, Indiana University Hospital, 4100, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Gastroenterol Clin North Am 42:429-42. 2013
  3. doi request reprint A survey of potential adherence to capsule colonoscopy in patients who have accepted or declined conventional colonoscopy
    Douglas K Rex
    Indiana University Hospital, University Boulevard, Indianapolis, IN 46202, USA
    J Clin Gastroenterol 46:691-5. 2012
  4. ncbi request reprint Sedation and the technical performance of colonoscopy
    Douglas K Rex
    Indiana University Hospital, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 15:661-72. 2005
  5. pmc Colon cleansing before colonoscopy: does oral sodium phosphate solution still make sense?
    D K Rex
    Indiana University Medical Center, Indianapolis, USA
    Can J Gastroenterol 23:210-4. 2009
  6. doi request reprint Endoscopist-directed administration of propofol: a worldwide safety experience
    Douglas K Rex
    Division of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Gastroenterology 137:1229-37; quiz 1518-9. 2009
  7. ncbi request reprint Colonoscopic identification of a foreign body causing an hepatic abscess
    Karl Y Bilimoria
    Department of Medicine, Indiana University School of Medicine, University Hospital, 2300, Indianapolis, Indiana 46202, USA
    J Clin Gastroenterol 37:82-5. 2003
  8. ncbi request reprint Review article: moderate sedation for endoscopy: sedation regimens for non-anaesthesiologists
    D K Rex
    Indiana University Hospital, Indianapolis, IN 46202, USA
    Aliment Pharmacol Ther 24:163-71. 2006
  9. ncbi request reprint Guidelines for colonoscopy surveillance after cancer resection: a consensus update by the American Cancer Society and the US Multi-Society Task Force on Colorectal Cancer
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastroenterology 130:1865-71. 2006
  10. doi request reprint Effect of the Centers for Medicare & Medicaid Services policy about deep sedation on use of propofol
    Douglas K Rex
    Indiana University Hospital, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Ann Intern Med 154:622-6. 2011

Detail Information

Publications121 found, 100 shown here

  1. ncbi request reprint Screening for Barrett's esophagus in colonoscopy patients with and without heartburn
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, 46202, USA
    Gastroenterology 125:1670-7. 2003
    ..The population prevalence of Barrett's esophagus (BE) is uncertain. Our aim was to describe the prevalence of BE in a volunteer population...
  2. doi request reprint Optimal withdrawal and examination in colonoscopy
    Douglas K Rex
    Division of Gastroenterology, Department of Medicine, Indiana University Health, Indiana University Hospital, 4100, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Gastroenterol Clin North Am 42:429-42. 2013
    ..Unfortunately, colonoscopy has proved to be a highly operator-dependent procedure with regard to detection. Variable detection results in some of the cancers that occur in the interval before the next colonoscopy. ..
  3. doi request reprint A survey of potential adherence to capsule colonoscopy in patients who have accepted or declined conventional colonoscopy
    Douglas K Rex
    Indiana University Hospital, University Boulevard, Indianapolis, IN 46202, USA
    J Clin Gastroenterol 46:691-5. 2012
    ..Capsule colonoscopy might improve adherence to colorectal cancer screening...
  4. ncbi request reprint Sedation and the technical performance of colonoscopy
    Douglas K Rex
    Indiana University Hospital, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 15:661-72. 2005
    ..For each of these approaches to colonoscopy, the advantages and disadvantages also are listed and discussed...
  5. pmc Colon cleansing before colonoscopy: does oral sodium phosphate solution still make sense?
    D K Rex
    Indiana University Medical Center, Indianapolis, USA
    Can J Gastroenterol 23:210-4. 2009
    ..Candidate patients for oral NaP solution should be assessed for eligibility and preparation instructions should adhere to the current recommendations for maximizing the safety of oral NaP...
  6. doi request reprint Endoscopist-directed administration of propofol: a worldwide safety experience
    Douglas K Rex
    Division of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Gastroenterology 137:1229-37; quiz 1518-9. 2009
    ..Endoscopist-directed propofol sedation (EDP) remains controversial. We sought to update the safety experience of EDP and estimate the cost of using anesthesia specialists for endoscopic sedation...
  7. ncbi request reprint Colonoscopic identification of a foreign body causing an hepatic abscess
    Karl Y Bilimoria
    Department of Medicine, Indiana University School of Medicine, University Hospital, 2300, Indianapolis, Indiana 46202, USA
    J Clin Gastroenterol 37:82-5. 2003
    ..The object may directly extend from the stomach or duodenum into the liver, or rarely, the object may perforate the bowel distal to the duodenum and indirectly extend to the liver leading to the formation of an abscess...
  8. ncbi request reprint Review article: moderate sedation for endoscopy: sedation regimens for non-anaesthesiologists
    D K Rex
    Indiana University Hospital, Indianapolis, IN 46202, USA
    Aliment Pharmacol Ther 24:163-71. 2006
    ..Moderate sedation is typically accepted in the anaesthesia community as an appropriate target for sedation by non-anaesthesiologists...
  9. ncbi request reprint Guidelines for colonoscopy surveillance after cancer resection: a consensus update by the American Cancer Society and the US Multi-Society Task Force on Colorectal Cancer
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastroenterology 130:1865-71. 2006
    ....
  10. doi request reprint Effect of the Centers for Medicare & Medicaid Services policy about deep sedation on use of propofol
    Douglas K Rex
    Indiana University Hospital, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Ann Intern Med 154:622-6. 2011
    ..However, the absence of an evidence base supporting a need for MAC to deliver propofol, combined with its high cost, suggests that alternatives to MAC to deliver propofol deserve fair and balanced evaluation...
  11. doi request reprint The impact of videorecording on the quality of colonoscopy performance: a pilot study
    Douglas K Rex
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Am J Gastroenterol 105:2312-7. 2010
    ..Colonoscopy provides imperfect protection against colorectal cancer and is operator dependent. Colonoscopies typically are poorly documented. We aimed to determine whether videorecording impacts short-term performance of colonoscopy...
  12. ncbi request reprint Efficacy and tolerability of a new formulation of sodium phosphate tablets (INKP-101), and a reduced sodium phosphate dose, in colon cleansing: a single-center open-label pilot trial
    M Khashab
    Indiana University Hospital, Indianapolis, IN 46202, USA
    Aliment Pharmacol Ther 21:465-8. 2005
    ..This inactive ingredient produces a residue that obscures mucosal visualization and is time-consuming to remove during colonoscopy...
  13. ncbi request reprint Trained registered nurses/endoscopy teams can administer propofol safely for endoscopy
    Douglas K Rex
    Division of Gastroenterology Hepatology, Department of Medicine, Indiana University Hospital, Indianapolis, Indiana 46202, USA
    Gastroenterology 129:1384-91. 2005
    ..Its administration by anesthesia specialists is associated with high cost. Administration by nonanesthesiologists is controversial because of concerns about safety, particularly respiratory depression...
  14. ncbi request reprint Colonoscopy technique in consecutive patients referred for prior incomplete colonoscopy
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Clin Gastroenterol Hepatol 5:879-83. 2007
    ..The aim of this study was to describe the approach used by a gastroenterologist with special interest in colonoscopy to perform colonoscopy in patients with a prior incomplete colonoscopy...
  15. ncbi request reprint Dosing considerations in the use of sodium phosphate bowel preparations for colonoscopy
    Douglas K Rex
    Indiana University Hospital, Indiana University Medical Center, 4100, 550 North University Blvd, Indianapolis, IN 46202, USA
    Ann Pharmacother 41:1466-75. 2007
    ..To review dosing considerations and other treatment recommendations to maximize the efficacy, tolerability, and safety of sodium phosphate (NaP) preparations...
  16. doi request reprint American College of Gastroenterology guidelines for colorectal cancer screening 2009 [corrected]
    Douglas K Rex
    Indiana University Medical Center, IU Hospital, Indianapolis 46202, USA
    Am J Gastroenterol 104:739-50. 2009
    ....
  17. ncbi request reprint Effect of variable stiffness colonoscopes on cecal intubation times for routine colonoscopy by an experienced examiner in sedated patients
    D K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Endoscopy 33:60-4. 2001
    ..Variable-stiffness colonoscopes allow passage of the rectosigmoid colon in a flexible mode, followed by stiffening to prevent looping. This feature might allow faster cecal intubation...
  18. doi request reprint Gastroenterologist-directed propofol: an update
    Douglas K Rex
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, 550 North University Boulevard, UH 4100, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 18:717-25, ix. 2008
    ..Specific training is needed to undertake gastroenterologist directed propofol administration...
  19. doi request reprint Considerations regarding the present and future roles of colonoscopy in colorectal cancer prevention
    Douglas K Rex
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Clin Gastroenterol Hepatol 6:506-14. 2008
    ..As these strategies emerge, monitoring their effects on adherence, cancer prevention, and procedural complications will be needed to optimize their roles relative to primary colonoscopy screening...
  20. ncbi request reprint Safety and efficacy of two reduced dosing regimens of sodium phosphate tablets for preparation prior to colonoscopy
    D K Rex
    Indiana University School of Medicine, Indianapolis, IN 46202, USA
    Aliment Pharmacol Ther 16:937-44. 2002
    ..To evaluate the safety and efficacy of two reduced dosing regimens of sodium phosphate tablets (Visicol, InKine Pharmaceutical Co. Inc., Blue Bell, PA, USA) for colon cleansing prior to colonoscopy...
  21. doi request reprint Narrow-band imaging without optical magnification for histologic analysis of colorectal polyps
    Douglas K Rex
    Division of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Gastroenterology 136:1174-81. 2009
    ..This study evaluated the ability of the Olympus Exera 180 high-definition colonoscope (Olympus America, Inc, Center Valley, PA), with narrow-band imaging, to predict colorectal polyp histology...
  22. ncbi request reprint Colorectal cancer screening: A guide to the guidelines
    D K Rex
    Indiana University School of Medicine, Indiana University Hospital, Indianapolis 46202, USA
    Can J Gastroenterol 13:397-402. 1999
    ..These guidelines are summarized and evaluated as they pertain to colorectal cancer screening...
  23. ncbi request reprint Nurse-administered propofol versus midazolam and meperidine for upper endoscopy in cirrhotic patients
    Brian R Weston
    Division of Gastroenterology and Hepatology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 98:2440-7. 2003
    ..The purpose of this study was to compare nurse-administered propofol to midazolam and meperidine for sedation in patients with chronic liver disease undergoing diagnostic upper GI endoscopy...
  24. ncbi request reprint Propofol versus midazolam/fentanyl for outpatient colonoscopy: administration by nurses supervised by endoscopists
    Brian J Ulmer
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University Hospital, Indianapolis 46202, USA
    Clin Gastroenterol Hepatol 1:425-32. 2003
    ..Propofol is under evaluation as a sedative for endoscopic procedures. We compared nurse-administered propofol to midazolam plus fentanyl for outpatient colonoscopy...
  25. ncbi request reprint Guidelines for colonoscopy surveillance after cancer resection: a consensus update by the American Cancer Society and US Multi-Society Task Force on Colorectal Cancer
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, IN, USA
    CA Cancer J Clin 56:160-7; quiz 185-6. 2006
    ....
  26. doi request reprint Validation of a simple classification system for endoscopic diagnosis of small colorectal polyps using narrow-band imaging
    David G Hewett
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastroenterology 143:599-607.e1. 2012
    ..We aimed to develop and evaluate the validity of a simple narrow-band imaging (NBI)-based classification system for differentiating hyperplastic from adenomatous polyps...
  27. ncbi request reprint An initial investigation of bispectral monitoring as an adjunct to nurse-administered propofol sedation for colonoscopy
    Shawn C Chen
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Am J Gastroenterol 99:1081-6. 2004
    ..Bispectral (BIS) monitoring has been used to evaluate depth of sedation in intensive care and surgical patients. We sought to explore its utility as a monitoring device for nurse-administered propofol sedation (NAPS) during colonoscopy...
  28. doi request reprint Screening, surveillance, and primary prevention for colorectal cancer: a review of the recent literature
    Charles J Kahi
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastroenterology 135:380-99. 2008
  29. ncbi request reprint Guidelines for colonoscopy surveillance after polypectomy: a consensus update by the US Multi-Society Task Force on Colorectal Cancer and the American Cancer Society
    Sidney J Winawer
    Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
    CA Cancer J Clin 56:143-59; quiz 184-5. 2006
    ..It has been shown that the first screening colonoscopy and polypectomy produces the greatest effects on reducing the incidence of colorectal cancer in patients with adenomatous polyps...
  30. pmc Serrated lesions of the colorectum: review and recommendations from an expert panel
    Douglas K Rex
    Indiana University, Indianapolis, Indiana, USA
    Am J Gastroenterol 107:1315-29; quiz 1314, 1330. 2012
    ..Recommendations are made for post-polypectomy surveillance of serrated lesions and for surveillance of serrated polyposis patients and their relatives...
  31. doi request reprint Willingness to undergo split-dose bowel preparation for colonoscopy and compliance with split-dose instructions
    R Zackary Unger
    Department of Medicine, Division of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, IN, USA
    Dig Dis Sci 55:2030-4. 2010
    ..Some physicians believe that split-dose preparations would be unpopular with patients scheduled for early morning colonoscopies...
  32. pmc Genome-wide association study identifies possible genetic risk factors for colorectal adenomas
    Todd L Edwards
    Division of Epidemiology, Department of Medicine, Vanderbilt University, Nashville, TN 37203, USA
    Cancer Epidemiol Biomarkers Prev 22:1219-26. 2013
    ..Removal of polyps reduces mortality from colorectal cancer. Colorectal adenomas are known to aggregate in families; however, the genetic determinants for risk of polyps are largely unknown...
  33. doi request reprint Gastroenterologists' patient instructions for oral sodium phosphate solution for colonoscopy preparation: a survey among gastroenterologists in the state of Indiana
    Veronika Gagovic
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, IN, USA
    J Clin Gastroenterol 42:1070-3. 2008
    ..Oral sodium phosphate solution (OSPS) has been associated with acute renal failure when used as a bowel preparation for colonoscopy...
  34. ncbi request reprint Current and future trends in colorectal cancer screening
    Charles J Kahi
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University Medical Center, Indianapolis, Indiana, USA
    Cancer Metastasis Rev 23:137-44. 2004
    ..Emerging technologies, such as stool DNA tests and virtual colonoscopy, hold promise for the future but cannot be recommended for screening at present...
  35. doi request reprint Differentiating adenomas from hyperplastic colorectal polyps: narrow-band imaging can be learned in 20 minutes
    Meghana Raghavendra
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 72:572-6. 2010
    ..Colonoscopy with narrow-band imaging can allow real-time determination of polyp histology...
  36. doi request reprint Variable detection of nonadenomatous polyps by individual endoscopists at colonoscopy and correlation with adenoma detection
    Shawn C Chen
    Department of Medicine, Division of Gastroenterology Hepatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
    J Clin Gastroenterol 42:704-7. 2008
    ..There is variation between endoscopists in their detection of colorectal adenomas. There is less understanding of variation between endoscopists in detection and management of nonadenomas...
  37. doi request reprint Estimation of impact of American College of Radiology recommendations on CT colonography reporting for resection of high-risk adenoma findings
    Douglas K Rex
    Division of Gastroenterology, Indiana University Medical Center, Indianapolis, Indiana, USA
    Am J Gastroenterol 104:149-53. 2009
    ..The aim of the study was to determine the impact of ACR recommendations on resection of high-risk adenoma findings using an endoscopic polyp/histology database...
  38. doi request reprint A randomized, double-blind, phase 3 study of fospropofol disodium for sedation during colonoscopy
    Lawrence B Cohen
    Department of Medicine, The Mount Sinai Hospital, New York, NY 10021, USA
    J Clin Gastroenterol 44:345-53. 2010
    ..This double-blind, multicenter study evaluated the safety and efficacy of intravenous fospropofol (6.5 mg/kg vs. 2 mg/kg) for moderate sedation in patients undergoing colonoscopy...
  39. ncbi request reprint Current colorectal cancer screening strategies: overview and obstacles to implementation
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
    Rev Gastroenterol Disord 2:S2-11. 2002
    ..The potential for improvements in the technology are substantial, and data from second-generation assays have already been reported. The cost-effectiveness of new strategies needs further evaluation...
  40. ncbi request reprint Cecal insertion and withdrawal times with wide-angle versus standard colonoscopes: a randomized controlled trial
    Hala Fatima
    Department of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, Indiana 46202 5121, USA
    Clin Gastroenterol Hepatol 6:109-14. 2008
    ..The aim of this study was to see if a 170 degrees angle of view (wide angle [WA]) colonoscope allowed faster withdrawal without decreasing adenoma detection...
  41. doi request reprint Split-dose administration of a dual-action, low-volume bowel cleanser for colonoscopy: the SEE CLEAR I study
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 78:132-41. 2013
    ..New bowel cleansers for colonoscopy that lead to improved efficacy, safety, and tolerability are needed...
  42. pmc Reinterpretation of histology of proximal colon polyps called hyperplastic in 2001
    Omer Khalid
    Department of Medicine, Indiana University Medical Center, Indianapolis, IN 46202, United States
    World J Gastroenterol 15:3767-70. 2009
    ..To evaluate how proximal colon polyps interpreted as hyperplastic polyps in 2001 would be interpreted by expert pathologists in 2007...
  43. doi request reprint Prophylactic clip closure reduced the risk of delayed postpolypectomy hemorrhage: experience in 277 clipped large sessile or flat colorectal lesions and 247 control lesions
    Hammad Liaquat
    Department of Medicine, Division of Gastroenterology, Indiana University Health, Indianapolis, IN, USA
    Gastrointest Endosc 77:401-7. 2013
    ..Endoscopic resection of large colorectal lesions is associated with high complication rates...
  44. ncbi request reprint Quality in the technical performance of colonoscopy and the continuous quality improvement process for colonoscopy: recommendations of the U.S. Multi-Society Task Force on Colorectal Cancer
    Douglas K Rex
    Department of Medicine Gastroenterology, Indiana University Medical Center, Indianapolis, USA
    Am J Gastroenterol 97:1296-308. 2002
  45. doi request reprint Leaving distal colorectal hyperplastic polyps in place can be achieved with high accuracy by using narrow-band imaging: an observational study
    David G Hewett
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 76:374-80. 2012
    ..Accurate colonoscopic assessment of colorectal polyp histology could avoid resection of distal nonadenomatous polyps and reduce costs and risk...
  46. doi request reprint High colonoscopic prevalence of proximal colon serrated polyps in average-risk men and women
    Charles J Kahi
    Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Gastrointest Endosc 75:515-20. 2012
    ..Proximal colon serrated polyps likely contribute to the decreased protection of colonoscopy against right-sided colorectal cancer...
  47. ncbi request reprint Propofol alone titrated to deep sedation versus propofol in combination with opioids and/or benzodiazepines and titrated to moderate sedation for colonoscopy
    Megan E VanNatta
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis Indiana 46202, USA
    Am J Gastroenterol 101:2209-17. 2006
    ..Propofol in combination with opioids and/or benzodiazepines can be titrated to moderate sedation, which might be safer...
  48. doi request reprint High-definition chromocolonoscopy vs. high-definition white light colonoscopy for average-risk colorectal cancer screening
    Charles J Kahi
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 105:1301-7. 2010
    ..High-definition chromoscopy is used to increase the yield of colonoscopy for flat and depressed neoplasms; however, its role in average-risk patients undergoing routine screening remains uncertain...
  49. pmc Risk factors for advanced sporadic colorectal neoplasia in persons younger than age 50
    Thomas F Imperiale
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
    Cancer Detect Prev 32:33-8. 2008
    ..We sought to determine whether a retrospective case-control study could identify risk factors for sporadic CRC and advanced adenomatous polyps (together known as sporadic colorectal neoplasia [CRN])...
  50. doi request reprint Prevalence and variable detection of proximal colon serrated polyps during screening colonoscopy
    Charles J Kahi
    Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
    Clin Gastroenterol Hepatol 9:42-6. 2011
    ..We investigated the prevalence and endoscopist detection rates of proximal serrated polyps in a large cohort of average risk patients undergoing screening colonoscopy...
  51. ncbi request reprint Efficacy of bispectral monitoring as an adjunct to nurse-administered propofol sedation for colonoscopy: a randomized controlled trial
    Luke M Drake
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 101:2003-7. 2006
    ..In this study, we sought to determine whether BIS is a useful adjunctive maneuver to registered nurse-administered propofol sedation (NAPS) as measured by reductions in recovery time and doses of propofol administered...
  52. ncbi request reprint Endoscopist can be more powerful than age and male gender in predicting adenoma detection at colonoscopy
    Shawn C Chen
    Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, USA
    Am J Gastroenterol 102:856-61. 2007
    ..In this study, we assessed the adenoma detection rates of nine endoscopists performing colonoscopy and the effects of endoscopist on adenoma detection compared with the established predictors of advancing age and male gender...
  53. ncbi request reprint Work and resources needed for endoscopic resection of large sessile colorectal polyps
    Andrew J Overhiser
    Department of Medicine, Division of Gastroenterology Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Clin Gastroenterol Hepatol 5:1076-9. 2007
    ..The aim of this study was to describe the resource use of endoscopic resection of large sessile colon polyps compared with small polyps with respect to physician time and equipment use...
  54. doi request reprint Incidence and predictors of "late" recurrences after endoscopic piecemeal resection of large sessile adenomas
    Mouen Khashab
    Division of Gastroenterology, Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Gastrointest Endosc 70:344-9. 2009
    ..Guidelines recommend inspection of the polypectomy site 3 to 6 months after resection. Some patients with a negative examination at 3 to 6 months have a subsequent "late" recurrence...
  55. ncbi request reprint Wide angle colonoscopy with a prototype instrument: impact on miss rates and efficiency as determined by back-to-back colonoscopies
    Douglas K Rex
    Division of Gastroenterology Hepatology, Department of Medicine, Indiana University Medical Center, Indianapolis, Indiana, USA
    Am J Gastroenterol 98:2000-5. 2003
    ..Polyps are missed during conventional colonoscopy, even with meticulous technique. The aim of this study was to investigate whether a prototype wide angle colonoscope is associated with a reduced miss rate for polyps...
  56. doi request reprint Relationship of non-polypoid colorectal neoplasms to quality of colonoscopy
    Charles J Kahi
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
    Gastrointest Endosc Clin N Am 20:407-15. 2010
    ..In this article, the authors examine the quality indicators for colonoscopy, present the reasons for interval cancers, and discuss the relation between NP-CRNs and quality colonoscopy...
  57. doi request reprint Effect of screening colonoscopy on colorectal cancer incidence and mortality
    Charles J Kahi
    Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Clin Gastroenterol Hepatol 7:770-5; quiz 711. 2009
    ..Colonoscopy is used widely for colorectal cancer (CRC) screening; however, its long-term impact on the incidence and mortality of CRC is not known...
  58. ncbi request reprint Registered nurse-administered propofol sedation for upper endoscopy and colonoscopy: Why? When? How?
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
    Rev Gastroenterol Disord 3:70-80. 2003
    ..NAPS is in its infancy, but this method of sedation shows considerable promise for improving patient satisfaction with, and thereby the reputation of, endoscopic procedures...
  59. ncbi request reprint 170 degrees wide-angle colonoscope: effect on efficiency and miss rates
    Viju P Deenadayalu
    Indiana University Hospital, 4100, 550 N University Boulevard, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 99:2138-42. 2004
    ..Small polyps are routinely missed during colonoscopy even with careful examination...
  60. ncbi request reprint Primer: Applying the new postpolypectomy surveillance guidelines in clinical practice
    Charles J Kahi
    Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
    Nat Clin Pract Gastroenterol Hepatol 4:571-8. 2007
    ..Physician education and widespread implementation of continuous quality improvement programs are required to bridge the gap between the guidelines and their clinical application...
  61. doi request reprint Failure to recognize serrated polyposis syndrome in a cohort with large sessile colorectal polyps
    Krishna C Vemulapalli
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
    Gastrointest Endosc 75:1206-10. 2012
    ..Serrated polyposis syndrome (SPS) is a rare condition of multiple serrated colorectal polyps and cancers. Colorectal cancer risk is increased in SPS...
  62. doi request reprint Improving protection against proximal colon cancer by colonoscopy
    Femi Lasisi
    Indiana University Hospital, 4100, 550 N University Boulevard, Indianapolis, IN, 46202, USA
    Expert Rev Gastroenterol Hepatol 5:745-54. 2011
    ..Effective examination should be demonstrated by meeting recommended targets for adenoma detection...
  63. ncbi request reprint Colorectal cancer screening: a guide to the guidelines
    Viju P Deenadayalu
    Indiana University School of Medicine, Indiana University Hospital, Indianapolis, Indiana, USA
    Rev Gastroenterol Disord 7:204-13. 2007
    ..High risk is still based primarily on family history, and the guidelines are fairly consistent in adjusting screening modality and intervals according to family history...
  64. doi request reprint Cap-fitted colonoscopy: a randomized, tandem colonoscopy study of adenoma miss rates
    David G Hewett
    Division of Gastroenterology Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 72:775-81. 2010
    ..Failures of adenoma detection diminish the effectiveness of colonoscopy...
  65. doi request reprint Pro: Villous elements and high-grade dysplasia help guide post-polypectomy colonoscopic surveillance
    Douglas K Rex
    Indiana University Hospital, Indianapolis, Indiana, USA
    Am J Gastroenterol 103:1327-9. 2008
  66. ncbi request reprint The science and politics of propofol
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis 46202, USA
    Am J Gastroenterol 99:2080-3. 2004
    ..The gastroenterology and anesthesia communities should work together to explore mechanisms to expand propofol use or an alternative for endoscopy in a safe and cost-effective manner...
  67. doi request reprint Patients' description of rectal effluent and quality of bowel preparation at colonoscopy
    Hala Fatima
    Division of Gastroenterology, Department of Internal Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 71:1244-1252.e2. 2010
    ..There are few data evaluating how accurately patients can predict the quality of their colonoscopy preparation...
  68. doi request reprint Efficacy and effectiveness of colonoscopy: how do we bridge the gap?
    David G Hewett
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, University Hospital 4100, 550 North University Boulevard, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 20:673-84. 2010
    ..Interventions to bridge the gap between efficacy and effectiveness are lacking, yet they should emphasize quality measurement and operate at various levels within the health system to motivate change in endoscopist behavior...
  69. ncbi request reprint Postpolypectomy and post-cancer resection surveillance
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Rev Gastroenterol Disord 3:202-9. 2003
    ..An exception to this approach is patients with rectal cancer operated by traditional blunt dissection techniques, for which there is a rationale for interval flexible sigmoidoscopy and/or rectal ultrasound to look for local recurrences...
  70. doi request reprint Miss rate of right-sided colon examination during colonoscopy defined by retroflexion: an observational study
    David G Hewett
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Gastrointest Endosc 74:246-52. 2011
    ..Colonoscopy is less effective in the proximal compared with the distal colon...
  71. ncbi request reprint A patient has a 3-centimeter cecal polyp on chronic anticoagulation for a mechanical mitral valve prosthesis
    Andrew J Overhiser
    Indiana University School of Medicine, Indianapolis, 46202, USA
    Clin Gastroenterol Hepatol 4:972-5. 2006
  72. ncbi request reprint Rationale for colonoscopy screening and estimated effectiveness in clinical practice
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine and Indiana University Hospital, Indianapolis 46202, USA
    Gastrointest Endosc Clin N Am 12:65-75. 2002
    ..Maintaining a high standard of performance is critical with regard to achieving the highest level of effectiveness possible...
  73. ncbi request reprint Third Eye Retroscope: rationale, efficacy, challenges
    Douglas K Rex
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Rev Gastroenterol Disord 9:1-6. 2009
    ..This article reviews the rationale, efficacy, and clinical challenges associated with one of the most promising devices for improvement of mucosal exposure during colonoscopy, the Third Eye Retroscope (Avantis Medical, Sunnyvale, CA)...
  74. ncbi request reprint Comparison of wireless capsule endoscopy and conventional radiologic methods in the diagnosis of small bowel disease
    Suthat Liangpunsakul
    Division of Gastroenterology and Hepatology, 550 N University Blvd, UH 4100, Indiana University Hospital, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 14:43-50. 2004
  75. ncbi request reprint Impact of bending section length on insertion and retroflexion properties of pediatric and adult colonoscopes
    William R Kessler
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine and Indiana University Hospital, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 100:1290-5. 2005
    ..We sought to determine the impact of short bending on cecal insertion, terminal ileal intubation, and proximal colon retroflexion...
  76. pmc Patient interest in video recording of colonoscopy: a survey
    Meghana Raghavendra
    Division of Gastroenterology Hepatology, Indiana University Medical Center, Indianapolis, IN 46202, USA
    World J Gastroenterol 16:458-61. 2010
    ..To find if patients are interested in obtaining a video recording of their colonoscopy procedure...
  77. ncbi request reprint Safety of propofol administered by registered nurses with gastroenterologist supervision in 2000 endoscopic cases
    Douglas K Rex
    Indiana University Hospital, Indianapolis 46202, USA
    Am J Gastroenterol 97:1159-63. 2002
    ..In a few centers, propofol has reportedly been used in endoscopic procedures and administered by nurses supervised by gastroenterologists without attendance by anesthesiologists or nurse anesthetists...
  78. ncbi request reprint Technical performance of colonoscopy in patients sedated with nurse-administered propofol
    Jonathan J Hansen
    Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Am J Gastroenterol 99:52-6. 2004
    ..Nurse-administered propofol has gained attention as a safe and effective means of sedation for patients undergoing endoscopic procedures. However, little is known about the effect of propofol on the technical performance of colonoscopy...
  79. ncbi request reprint A survey of colonoscopic polypectomy practices among clinical gastroenterologists
    Navjot Singh
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, 550 University Boulevard, IU Hospital, Indianapolis, IN 46202, USA
    Gastrointest Endosc 60:414-8. 2004
    ..Polypectomy techniques vary in clinical practice. The aim of this study was to determine patterns of polypectomy practices in a random sample of gastroenterologists...
  80. ncbi request reprint Colorectal cancer in African Americans
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
    Rev Gastroenterol Disord 4:60-5. 2004
    ..As leaders in the prevention and early diagnosis of colorectal cancer in the United States, clinical gastroenterologists can play an important role in promoting colorectal cancer awareness and the need for screening in African Americans...
  81. ncbi request reprint Step section histology of proximal colon polyps that appear hyperplastic by endoscopy
    Douglas K Rex
    Department of Medicine, Indiana University, Indianapolis 46202, USA
    Am J Gastroenterol 97:1530-4. 2002
    ..These polyps may occasionally have foci of dysplastic (adenomatous) tissue. We aimed to define the prevalence of adenomatous foci in these polyps...
  82. ncbi request reprint High yields of small and flat adenomas with high-definition colonoscopes using either white light or narrow band imaging
    Douglas K Rex
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Gastroenterology 133:42-7. 2007
    ..Detection of adenomas is an important goal of colonoscopy. Narrow band imaging (NBI) might highlight adenomas and lead to higher rates of adenoma detection...
  83. doi request reprint Small-bowel obstruction: state-of-the-art imaging and its role in clinical management
    Dean D T Maglinte
    Department of Radiology, Indiana University Medical Center, Indianapolis, Indiana 46202 5253, USA
    Clin Gastroenterol Hepatol 6:130-9. 2008
    ..This review focuses on modern imaging techniques and their role in both the diagnosis and treatment of patients with SBO...
  84. ncbi request reprint Inflammatory bowel disease
    D J Helper
    Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, USA
    Endoscopy 33:140-6. 2001
    ..The role of anti-tumor necrosis factor (TNF) antibody therapy in the treatment of IBD continues to be investigated...
  85. ncbi request reprint ACG colorectal cancer prevention action plan: update on CT-colonography
    Douglas K Rex
    Indiana University School of Medicine, Indianapolis, Indiana, USA
    Am J Gastroenterol 101:1410-3. 2006
  86. ncbi request reprint Screening and surveillance of colorectal cancer
    Charles J Kahi
    Indiana University School of Medicine, Roudebush VA Medical Center, Indianapolis, 46202, USA
    Gastrointest Endosc Clin N Am 15:533-47, ix. 2005
    ....
  87. ncbi request reprint A nursing perspective on sedation and nurse-administered propofol for endoscopy
    Christine A Overley
    IU Hospital, 550 N University Blvd, Suite 4100, Indianapolis, IN 46202, USA
    Gastrointest Endosc Clin N Am 14:325-33. 2004
    ..The role of nurses in endoscopic sedation and monitoring continues to develop, and we are enthusiastic about an active role for nurses...
  88. doi request reprint Large sessile adenomas are associated with a high prevalence of synchronous advanced adenomas
    Wissam Mattar
    Division of Gastroenterology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Clin Gastroenterol Hepatol 6:877-9. 2008
    ..Synchronous polyps were those removed at the colonoscopy that discovered the large sessile adenoma or at any follow-up endoscopic examination within 12 months of discovery of the large sessile adenoma...
  89. ncbi request reprint Impact of proximal colon retroflexion on adenoma miss rates
    Matthew Harrison
    Indiana University Hospital, 550 University Boulevard, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 99:519-22. 2004
    ..Small adenomas are commonly missed during routine colonoscopy. The aim of this study was to determine whether routine retroflexion in the proximal colon would improve adenoma detection rates...
  90. ncbi request reprint Colorectal cancer screening and surveillance: the present and the future
    D K Rex
    Indiana University School of Medicine, Indianapolis, IN, USA
    Rev Gastroenterol Disord 1:18-31. 2001
    ..The use of screening colonoscopy is expected to increase. Gastroenterologists will play the central role in ensuring the safe and cost-effective application of colonoscopy to screening and surveillance...
  91. ncbi request reprint Advances in colonoscopic imaging
    Douglas K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
    Rev Gastroenterol Disord 6:S28-32. 2006
    ..Factors that interfere with detection of neoplasia during colonoscopy, as well as technologic advances that can improve both neoplasia detection and real-time determination of polyp histology, are reviewed...
  92. ncbi request reprint Maximizing detection of adenomas and cancers during colonoscopy
    Douglas K Rex
    Indiana University Medical Center, Indianapolis, Indiana 46202, USA
    Am J Gastroenterol 101:2866-77. 2006
    ..Adenoma detection rates are an important measure of the quality of colonoscopy and should be reported to endoscopists in quality improvement programs in colonoscopy...
  93. ncbi request reprint PRO: Patients with polyps smaller than 1 cm on computed tomographic colonography should be offered colonoscopy and polypectomy
    Douglas K Rex
    Indiana University Hospital, Indianapolis, IN 46202, USA
    Am J Gastroenterol 100:1903-5; discussion 1907-8. 2005
  94. ncbi request reprint Colon tumors and colonoscopy
    S Liangpunsakul
    Dept of Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA
    Endoscopy 34:875-81. 2002
  95. ncbi request reprint Flexible sigmoidoscopy plus air contrast barium enema versus colonoscopy for suspected lower gastrointestinal bleeding
    D K Rex
    Department of Medicine, Indiana University Medical Center, Indianapolis
    Gastroenterology 98:855-61. 1990
    ..However, initial colonoscopy is more cost effective for those aged greater than or equal to 55 yr...
  96. ncbi request reprint Review article: registered nurse-administered propofol sedation for endoscopy
    S C Chen
    Department of Medicine, Division of Gastroenterology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
    Aliment Pharmacol Ther 19:147-55. 2004
    ..More information is needed on how training nurses and endoscopists should proceed to give propofol, as well as the optimal level of monitoring to ensure the safety of nurse-administered propofol...
  97. ncbi request reprint Performing screening flexible sigmoidoscopy using colonoscopes: experience in 500 subjects
    D K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis
    Gastrointest Endosc 36:486-8. 1990
    ..We conclude that in a group of unsedated subjects scheduled for flexible sigmoidoscopy after a sigmoidoscopy prep, the use of instruments longer than 60 cm gives very little additional yield...
  98. ncbi request reprint Flexible sigmoidoscopy plus air-contrast barium enema versus colonoscopy for evaluation of symptomatic patients without evidence of bleeding
    D K Rex
    Department of Medicine, Indiana University School of Medicine, Indianapolis, USA
    Gastrointest Endosc 42:132-8. 1995
    ..Cost-effective selection of imaging strategies in this population can be based on demographic factors such as age and sex, which are better predictors of the presence of adenomas than are symptoms...
  99. ncbi request reprint Quality of air contrast barium enema performed the same day as incomplete colonoscopy with air insufflation
    D G Mark
    Department of Medicine, Indiana University School of Medicine, Indianapolis
    Gastrointest Endosc 38:693-5. 1992
    ..We conclude that when colonoscopy using air insufflation is incomplete because of looping or angulation, air contrast barium enema can be done the same day without impairing the quality of the barium study...
  100. ncbi request reprint Colonoscopy turning the focus on quality
    D K Rex
    Department of Medicine, Indiana University Hospital, Indianapolis 46202, USA
    Dig Liver Dis 34:831-2. 2002
  101. ncbi request reprint Medical-legal risks of incident cancers after clearing colonoscopy
    D K Rex
    Indiana University School of Medicine, Indiana University Hospital, Indianapolis, USA
    Am J Gastroenterol 96:952-7. 2001
    ..These issues include informed consent, documentation of cecal intubation, appropriate description of preparation, documentation of examination time and technique, and attention to potential atypical neoplasms...