ABSTRACT
Introduction: Multidrug resistant bacteria is causing a veryserious problem in the proper treatment and management ofsick patients in ICU’s. Study aimed to find out antimicrobialsusceptibility pattern of bacterial isolates from trachealculture.Material and methods: This study was carried over a periodof 6 months from July to December 2017 in the departmentof microbiology. Total of 470 tracheal aspirates were studied.Each specimen was streaked on 5% sheep blood agar andMacConkey agar. After isolation and identification, sensitivityof selected organisms against different antibiotics was studiedResults: Out of 470 tracheal aspirates, 328 samples showedsingle bacterial growth, 76 were sterile; contaminants weregrown in 58 samples and in remaining 8 samples yeast weregrown. The incidence of positivity in our study was 83.8%,with gram negative bacteria outnumbering the gram positiveones. Of the 328 samples which showed bacterial growth,Acinetobacter spp 159(40.3) was the most common organismfollowed by Klebsiella pneumoniae 72(18.2), Pseudomonasspp 46(11.6), Escherichia coli 27(6.8), Staphylococcus aureus13(3.2), Klebsiella oxytoca 5(1.26), Enterococcus spp 3(0.76),Proteus spp, Citrobacter spp, Providencia stuartii 1(0.25)each. Also XDR (extensively drug resistant) bacteria wereisolated at a high frequency (67%) with Acinetobacter spp.being the most common 128(56.6)) followed by Klebsiellaspp. 39(17.2) Pseudomonas spp. 38(16.8), and E.coli 12(5.3).Conclusion: Gram negative were main organisms responsiblefor lower respiratory tract infections in hospitalized patientsand the majority of the isolates belong to XDR and MDRcategory.
ABSTRACT
Background: Medical implants are devices that are placed inside or on the surface of the body for functional, cosmetic or therapeutic purposes. Orthopaedic implants are usually associated with infections which lead to devastating complications for the patients. The study was conducted to evaluate the association of various factors considered to affect orthopaedic implant infections.Methods: The 100 patients with orthopaedic implant infections were included. Various patient parameters including risk factors, intervention form and type of onset of infection were recorded. Microbiological workup was done by standard techniques along with biofilm detection.Results: Early onset of infection was prevalent in cases with open fractures. Smoking and tissue destruction were the major risk factors. Longer duration of surgery was associated with early onset and polymicrobial infections. 15.5% of the isolates were strong biofilm producers. Staphylococcus aureus was the predominant biofilm producer. More biofilm producing organisms were recovered from stainless steel implants.Conclusions: Orthopaedic device-related infections lead to extreme morbidity in patients and puts a great encumberance on hospital resources. Various factors affect the outcome of orthopaedic implants. Appropriate infection control and institution specific interventions will help in reducing the magnitude of the problem.