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Your search keyword '"Johanson, John F."' showing total 502 results
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502 results on '"Johanson, John F."'

5. Colonoscopic withdrawal times and adenoma detection during screening colonoscopy

Author

Barclay, Robert L., Vicari, Joseph J., Doughty, Andrea S., Johanson, John F., and Greenlaw, Roger L.

Subjects
Adenoma -- Diagnosis, Colonoscopy -- Health aspects
Abstract

Study is conducted to assess the rates of detection of adenomas and the amount of time taken to withdraw the colonoscope among endoscopists to assess the performance of screening colonoscopy in a large community-based practice. It is found that greater rates of detection of adenomas among endoscopists who had longer mean times for withdrawal of the colonoscope.

Published
2006

20. Tissue sampling and analysis

Author

Faigel, Douglas O., Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Goldstein, Jay L., Hirota, William K., Jacobson, Brian C., Johanson, John F., Leighton, Jonathan A., Mallery, J.Shaw, Peterson, Kathryn A, Raddawi, Hareth M., Varg0, John J., II, Waring, J.Patrick, Fanelli, Robert D., and Wheeler-Harbough, Jo

Published
2003
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21. Preparation of patients for GI endoscopy

Author

Standards of practice committee, Faigel, Douglas O., Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Goldstein, Jay L., Hirota, William K., Jacobson, Brian C., Johanson, John F., Leighton, Jonathan A., Mallery, J. Shawn, Hareth M., Raddawi, Vargo, John J., II, Waring, J. Patrick, Fanelli, Robert D., and Wheeler-Harbough, Jo

Published
2003
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22. Complications of colonoscopy

Author

Standards of Practice Committee, Dominitz, Jason A., Eisen, Glenn M., Baron, Todd H., Goldstein, Jay L., Hirota, William K., Jacobson, Brian C., Johanson, John F., Leighton, Jonathan A., Mallery, J. Shawn, Raddawi, Hareth M., Vargo, John J., II, Waring, J. Patrick, Fanelli, Robert D., Wheeler-Harbough, Jo, and Faigel, Douglas O.

Published
2003
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23. Obscure gastrointestinal bleeding

Author

Leighton, Jonathan A, Goldstein, Jay, Hirota, William, Jacobson, Brian C, Johanson, John F, Mallery, J.Shawn, Peterson, Kathryn, Waring, J.Patrick, Fanelli, Robert D, Wheeler-Harbaugh, Jo, Baron, Todd H, and Faigel, Douglas O

Published
2003
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26. Complications of upper GI endoscopy

Author

Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Faigel, Douglas O., Goldstein, Jay L., Johanson, John F., Mallery, J.Shawn, Raddawi, Hareth M., Vargo, John J., II, Waring, J.Patrick, Fanelli, Robert D., and Wheeler-Harbough, Jo

Published
2002
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28. Role of endoscopy in enteral feeding

Author

Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Faigel, Douglas O., Goldstein, Jay L., Johanson, John F., Mallery, J.Shawn, Raddawi, Hareth M., Vargo, John J., II, Waring, J.Patrick, Fanelli, Robert D., and Wheeler-Harbough, Jo

Published
2002
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33. Open access endoscopy

Author

Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Faigel, Douglas O., Goldstein, Jay L., Johanson, John F., Mallery, J.Shawn, Raddawi, Hareth M., Vargo, John J., Waring, J.Patrick, Fanelli, Robert D., and Wheeler-Harbaugh, Jo

Published
2002
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34. Acute colonic pseudo-obstruction

Author

Eisen, Glenn M., Baron, Todd H., Dominitz, Jason A., Faigel, Douglas O., Goldstein, Jay L., Johanson, John F., Mallery, J.Shawn, Raddawi, Hareth M., Vargo, John J., Waring, J.Patrick, Fanelli, Robert D., and Wheeler-Harbaugh, Jo

Published
2002
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38. A national population-based study of incidence of colorectal cancer and age: implications for screening in older Americans

Author

Cooper, Gregory S., Yuan, Zhong, Landefeld, C. Seth, Johanson, John F., and Rimm, Alfred A.

Subjects
Colorectal cancer -- Demographic aspects, Aged -- Health aspects, Medical screening -- Usage, Health
Abstract

Background. Population-based screening programs with flexible sigmoidoscopy have been advocated as a means to reduce the death rate from colorectal cancer. Because other studies have suggested a greater prevalence of lesions inaccessible to sigmoidoscopy in older patients, the expected yield of this procedure may differ in these subgroups. Methods. A 100% sample of Medicare beneficiaries 65 years or older with a first known diagnosis of colorectal cancer in 1987 was studied. Tumor site was divided into rectum, distal colon (distal to splenic flexure) and proximal colon. The analysis was also stratified by sex, race, and presence or absence metastatic disease, and incidence rates at each site by 5-year age group were calculated. Results. Among the 75,266 patients studied, the incidence of colorectal cancer increased from 1.59 patients/1000 in patients age 65-69 years to 3.87 patients/1000 in patients age 85 years and older. Although the incidence rates at all three sites increased, the increment was greatest for proximal tumors. The incidence trends with age also persisted in an analysis of only metastatic lesions. Moreover, incidence rates were consistently higher in men than in women and higher in whites than in blacks at all sites, though the age-related increase in incidence was consistent among all four groups. Conclusions. The proportion of tumors beyond the reach of sigmoidoscopy increased with age, as did the actual incidence of accessible lesions. These patterns were also consistent in subgroup analyses. As the age-related increase in incidence was observed for metastatic tumors at all sites in the colon, age-related differences in screening and diagnostic evaluation alone do not adequately explain the findings. These data underscore the need for further studies of the relative benefits of cancer screening and pathogenic factors in tumor development in different subgroups of the older population.

Published
1995

50. Diagnosis and Management of AIDS-related Diarrhea

Author

Johanson, John F

Subjects
Article Subject
Abstract

The spectrum of illness associated with the acquired immunodeficiency syndrome (AIDS) has been increasing since the initial description in 1981. While virtually all organ systems may be affected, the gastrointestinal tract appears to be a major target. Diarrhea is the most common symptom, affecting up to half of all AIDS patients during the course of their disease. Although diarrhea occurs frequently, its optimal management remains controversial. An extensive evaluation including stool studies and endoscopic biopsies of both the colon and small intestine has been widely recommended to identify all potential pathogenic organisms. An alternative approach is a more limited evaluation consisting of stool and blood cultures followed by symptomatic treatment with antidiarrheal agents if no specific organisms are identified. The clinical presentation of the most common opportunistic pathogens are reviewed, including several recently discovered organisms. Recommendations for treatment are followed by a brief discussion of management strategies used to care for patients with AIDS-related diarrhea.

Published
1996
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