Self-collection Of Stool: An Alternative To Digital Rectal Examination For Fecal Occult Blood Testing In The Emergency Department P. B. Lovett, J. D. D'Angelo,

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Self-collection Of Stool: An Alternative To Digital Rectal Examination For Fecal Occult Blood Testing In The Emergency Department P. B. Lovett, J. D. D'Angelo, K. M. Stürmann, P. Homel, H. Cho Study Objectives: Our objective was to evaluate a new technique for collection of stool for fecal occult blood testing (FOBT) in the Emergency Department (ED). We sought to compare the new approach, Self-Collection of Stool (SCS), against the traditional Digital Rectal Examination (DRE). Methods: Patients were eligible for enrollment if they required stool sampling for FOBT, as judged by their physician. We excluded patients who required DRE for reasons other than stool collection: those requiring assessment of prostatic or rectal anatomy, rectal tone or sensation. Subjects were enrolled on a convenience basis and randomized to SCS or DRE. Blinded data collectors obtained pain scores on a 100 mm Visual Analog Scale (VAS), recorded adequacy of stool specimens, and asked subjects the question, “If you had to choose, which do you think you would prefer, digital examination by a doctor, or self-collection of stool?” (future preference for stool collection technique). Results: Thirty patients were enrolled (14 randomized to SCS; 16 DRE). Median (min, max) VAS scores in mm were 5.5 (2, 37) for SCS versus 6.0 (2, 46) for DRE. There were no significant differences between these pain scores (p=0.64). Power for detecting a clinically important difference (13.0 mm) was >90%. Stool samples were adequate in 93% of SCS cases and 94% of DRE cases (no significant difference). The study lacked sufficient power to statistically compare future preferences for collection technique, but the raw numbers are presented in the table below. Conclusion: SCS and DRE are associated with similar, minimal pain scores on VAS. Both methods produce adequate specimens. SCS might be considered as an alternative strategy for stool collection.. Group Prefer DRE Prefer SCS Total Collection Technique just Experienced (Randomization) DRE 9 (60%) 6 (40%) 15 SCS 6 (46%) 7 (54%) 13 Age < 60 yrs 7 (44%) 9 (56%) 16 60+ yrs 8 (73%) 3 (27%) 11 Sex Male 7 (47%) 8 (53%) Female 7 (64%) 4 (36%)