Con: screening colonoscopy in the extreme elderly is not a wise choice

Patients over Age 75 Are at Increased Risk of Emergency Department Visit and Hospitalization Following Colonoscopy

BACKGROUND

The age to stop screening or surveillance colonoscopy is not well established, and unplanned hospital use after colonoscopy in the elderly is not well understood.

AIMS

To evaluate unplanned emergency department (ED) visits and hospitalization in patients over 75 within 7 days of outpatient colonoscopy.

METHODS

In this retrospective, single-center, cohort study, we reviewed outpatient screening or surveillance colonoscopies in patients ≥ 50 in a tertiary care academic medical center or affiliated facility between January 2008 and September 2013. Colonoscopies were divided by age based on USPSTF recommendations. The rate of ED visits and hospitalizations per colonoscopy for each age-group was determined. Predictors of ED visit and hospitalization were assessed through univariate and multivariate logistic regressions, and mortality following colonoscopy was evaluated using Kaplan-Meier analysis.

RESULTS

A total of 30,409 colonoscopies were performed in 27,173 patients (51% male) by 40 endoscopists. ED visits occurred after 188 colonoscopies (0.62%). Age over 75 years was independently associated with ED visit (OR 1.58, 95% CI 1.05-2.37, p = 0.027) and hospitalization (OR 3.7, 95% CI 2.03-6.73, p < 0.001) within 7 days of colonoscopy. Higher number of medication classes, recent ED visit, polypectomy, and endoscopic mucosal resection were also independent variables associated with ED utilization after procedure. The mortality rate at the end of the follow-up (median 4.4; IQR 2.7-6 years) was 1.9, 8.6, and 15.8% for the age-groups 50-75, 76-85, and > 85 years, respectively.

CONCLUSION

Patients over age 75 are 1.6 times as likely to use the ED and 3.7 times as likely to be hospitalized after colonoscopy. Further prospective studies are needed to assess the risk/benefit of nondiagnostic colonoscopy in geriatric patients.

Would you recommend screening colonoscopy for the very elderly?

Life expectancy in Korea has increased, and the number of screening colonoscopies in the elderly has also dramatically increased. The net benefit of colonoscopy in the very elderly (≥80 years of age as defined by the World Health Organization) may be reduced because of the competing risk of mortality due to other diseases. Therefore, the decision to perform screening colonoscopy may be more complex in this age group. As the potential increase in life expectancy due to screening colonoscopy is significantly reduced in the very elderly, this procedure should be limited to those among the very elderly who have substantial life expectancies. Furthermore, considering the common major complications associated with colonoscopy, poor bowel preparation, and the possibility of incomplete colonoscopies in the very elderly, the performance of screening colonoscopy in the very elderly may not be an ideal recommendation. In terms of providing the greatest benefit to the most number of people, patients with the highest potential gain in terms of life expectancy, relative to the diagnostic yield, should be targeted for colonoscopy screening. This review addresses the unique considerations regarding screening colonoscopy in the very elderly and the individualized approach, which involves the weighing of the risks and benefits for each individual with consideration of their overall health status.

Flexible sigmoidoscopy in the randomized prostate, lung, colorectal, and ovarian (PLCO) cancer screening trial: added yield from a second screening examination

BACKGROUND

Among randomized trials evaluating flexible sigmoidoscopy (FSG) for its effect on colorectal cancer mortality, only the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial screened its participants more than one time. We report outcomes from the PLCO screening FSG program and evaluate the increased yield produced by a second FSG.

METHODS

Participants were screened by 60-cm FSG in 10 regional screening centers at study entry and 3 or 5 years later, depending on the time of random assignment. Results from subsequent diagnostic intervention were tracked and recorded in a standardized fashion, and outcomes were compared according to sex and age. The protocol discouraged repeat FSG in persons with colorectal cancer or adenoma diagnosed after the initial FSG.

RESULTS

Of 77 447 enrollees, 67 073 (86.6%) had at least one FSG and 39 443 (50.9%) had two FSGs. Diagnostic intervention occurred in 74.9% after a positive first FSG and in 78.7% after a positive repeat FSG. The second FSG increased the screening yield by 32%: Colorectal cancer or advanced adenoma was detected in 37.8 per 1000 persons after first screening and in 49.8 per 1000 persons after all screenings. The second FSG increased the yield of cancer or advanced adenoma by 26% in women and by 34% in men. Of 223 subjects who received a diagnosis of colorectal carcinoma within 1 year of a positive FSG, 64.6% had stage I and 17.5% had stage II disease.

CONCLUSIONS

Repeat FSG increased the detection of colorectal cancer or advanced adenoma in women by one-fourth and in men by one-third. Screen-detected carcinomas were early stage (stage I or II) in greater than 80% of screened persons. Colorectal cancer mortality data from the PLCO, as the definitive endpoint, will follow in later publications.

Epidemiology and quality control of 245 000 outpatient colonoscopies

INTRODUCTION

Screening colonoscopy is an effective means for early detection of colorectal carcinoma. Any exhaustive evaluation of the method must take further factors into account: epidemiology of colorectal adenomas and carcinomas in the target population, acceptance by the patients, structure, process, and outcome quality, and health economics.

METHODS

The internet-based colonoscopy database of the Bavarian Association of Statutory Health Insurance Physicians (ASHIP) for the year 2006 includes data on 86.05% of all outpatient colonoscopies performed in Bavarian ASHIP patients, or a total of 245 263 documented examinations.

RESULTS

The rate of participation in preventive colonoscopies was low (1.5%) and showed considerable geographical variation. The rate of detection of histologically confirmed colorectal neoplasia in symptom-free screened individuals was almost 26.0%. Some 1.3% of those screened had colorectal carcinoma. In 76.31% of the participants a completely clean gut was achieved. The incidence of bleeding, perforation, and cardiorespiratory complications was 0.22%, 0.03%, and 0.06%, respectively.

DISCUSSION

The complication rate of outpatient colonoscopy is on the order of tenths of a percent, while the process quality is high. The rate of detection of colorectal adenoma and carcinoma is high and the projected benefits for public health are considerable, but the rate of participation is too low.