Objectives: This study aimed to identify the microbiological profile of various catheter tips, and multidrug resistance pattern of extended spectrum β-lactamase (ESBL) producing E. coli and Klebsiella spp. isolates. Methods: A descriptive analysis of 263 catheter tip specimens processed for culture and antimicrobial susceptibility testing was carried out in B&B Hospital, Lalitpur. Five different types of catheter tips were analyzed for microbiological growth and antimicrobial susceptibility testing. Results: Among catheter tips, the highest percentage of microbial growth was observed in tracheostomy tip. Monomicrobial growth was recorded in 82.9% catheter tips and polymicrobial growth was observed in 17.1% tip samples. Of 180 isolates, gram negative rods (76.6%) followed by yeast (19.4%) and gram-positive cocci (3.9%) were isolated. Gram negative Acinetobacter spp. (25%) and Pseudomonas spp. (23.3%) and gram-positive Enterococcus spp. (2.2%) were the most frequently isolated bacteria. However, carbapenam was the most effective antibiotic for both groups. Conclusion: Of the total isolates tested, 61.4% were found to be multidrug resistant (MDR). Among gram negative rods, 22.2% E. coli and 27.3% Klebsiella spp. were confirmed as ESBL producer. It is recommended to apply standard protocol during insertion and removal of catheter which may help in managing nosocomial infection associated with catheters.
Introduction: Pulmonary tuberculosis is a contagious bacterial infection that involves the lungs and it may spread to other organs. Sputum smear and culture conversion are important indicators for the patients at National Tuberculosis Centre in Nepal. Methods:and under antitubercular therapy were monitored for sputum smear and culture conversion time. The blood specimens from each patient were processed for hemoglobin, platelets, erythrocyte sedimentation rate and blood glucose levels. Patient's clinical history, risk factors that prolong conversion time and sociodemographic information were also collected by direct interview.Results: The mean sputum smear and culture conversion were found to be 54.4 days and 45.5 days respectively. Old age, smoking habit, low body mass index value, Treatment category II, initial bacillary load and abnormal erythrocyte sedimentation rate values were found to be associated with long sputum conversion time. Radiographic involvement of only left lungs, presence of fewer symptoms, aged between 15-45 years, having normal weight, without smoking habit and being married, were found to be associated with short sputum conversion time.Conclusions: The sputum microscopy, old age, smoking habit, low body mass index value, treatment category II, initial bacillary load and abnormal erythrocyte sedimentation rate value had been found to
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