Etiology and antimicrobial resistance patterns in pediatric urinary tract infection.

BACKGROUND: Urinary tract infection (UTI) is one of most common pediatric infections. The aim of this study was to investigate the etiology and antimicrobial resistance patterns in children hospitalized at Children's Hospital of Nanjing Medical University. METHODS: We conducted a retrospective, descriptive study of all UTI from 1 January 2013 to 30 November 2016 in children discharged from Nanjing Children's Hospital. The isolated pathogens and their resistance patterns were examined using midstream urine culture. RESULTS: A total of 2,316 children with UTI were included in the study. The occurrence rates of isolated pathogens were as follows: Enterococcus spp., 35.15%; Escherichia coli, 22.32%; Staphylococcus aureus spp., 7.73%; Streptococcus spp., 7.51%; and Klebsiella spp., 6.95%. Uropathogens had a low susceptibility to linezolid (3.47%), vancomycin (0.92%), imipenem (5.74%), and amikacin (3.17%), but they had a high susceptibility to erythromycin (90.52%), penicillin G (74.01%), cefotaxime (71.41%), cefazolin (73.41%), cefuroxime (72.52%), and aztreonam (70.11%). CONCLUSIONS: There is high antibiotic resistance in hospitalized children with UTI. Susceptibility testing should be carried out on all clinical isolates, and the empirical antibiotic treatment should be altered accordingly.

Do Antibiotic Beads Need to be Removed?

BACKGROUND: Polymethylmethacrylate antibiotic impregnated beads can be an effective treatment for chronic osteomyelitis or an adjuvant in the treatment of open fractures. It remains unclear however whether the beads cause long-term adverse events if not removed. The purpose of this study was to determine if removal of antibiotic beads was required in order to avoid long term complications. METHODS: A retrospective chart review was conducted on patients with an extremity or pelvis fracture that had implantation of polymethylmethacrylate (PMMA) antibiotic beads over a five-year period. RESULTS: Fifty-one patients met inclusion criteria for this study; thirty-seven patients (73%) did not have complications after surgical debridement and placement of PMMA antibiotic beads necessitating removal. CONCLUSION: Our findings suggest that polymethylmethacrylate antibiotic beads can be utilized as a means of delivering high-dose concentrations of local antibiotics and do not have to be removed in all patients.

The Use of Antibiotic Impregnated Cement Spacers in the Treatment of Infected Total Joint Replacement: Challenges and Achievements.

Two stage total hip arthroplasty revision surgery includes foreign material debridment, insertion of antibiotic impregnated cement spacer, and finally, reimplantation of the prosthesis. This review has aimed to evaluate the efficacy of antibiotic impregnated cement spacers in infection control and eradication in arthroplasties. A total of 85 articles on total hip arthroplasty were used in this narrative literature review. High concentrations of the antibiotic in targeted drug delivery by means of using antibiotic impregnated cement spacers is effective against infections while reduces the side effects of systemic antibiotic therapy. This results in prevention of bone and muscle atrophy as well as size discrepancy. Also, antibiotic impregnated cement spacers reduce dead space and help stabilize the limb in total hip arthroplasty. Despite all reported drawbacks, antibiotic impregnated cement spacers seem effective in eradicationg infections, although a consensus has not been yet achieved.