Chronic Wound Infection: Bacterial Colonization in the Dermal Pericolostomic Region
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Of the 34 participants, 20 (58.8%) were male and 14 (41.2%) were female. The average age was 51.6 years (range 16–84 years). Using the surgical risk evaluation adopted by the American Society of Anesthesiology, 25 patients (73.5%) were class 1 and 9 (26.5%), class 2.
Among the participants, 16 (47.0%) had a colostomy due to malignant colorectal disease, 13 (81.3%) were classified in stage B2, and 3 (18.7%) in stage B1.
The most frequently cultured bacteria were Escherichia coli (31 of 34 patients, 91.2%). Also noted were Bacteroides spp (13/34, 38.2%), and Peptococcus spp (13/34, 38.2%), Klebsiella spp (11/34, 32.4%), and Bacteroides fragilis (10/34, 29.4% [Table 1]). When bacterial species were compared with consideration to length of time with a colostomy, researchers noted that Escherichia coli was present in all groups, while Bacteroides fragilis and Klebsiella spp were not found. Peptococcus spp increased in the period beyond 20 weeks (Table 2).
According to Fisher’s Exact Test and linear-by-linear association, Bacteroides fragilis (P = 0.021) and Klebsiella spp (P = 0.003) were not found in the > 20-week group, a statistically significant finding. It was observed that Peptococcus spp (P = 0.068) was increasingly present in the > 20-week group; Escherichia coli presence was statistically significant (P < 0.001).
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