ABSTRACT
Background: The spread of carbapenem resistance among Enterobacteriaceae have become a problem for healthcare facilities worldwide. Community and hospital-acquired infections caused by these bacteria have been associated with significant morbidity and mortality with limited treatment options. Rapid detection of carbapenem resistant Enterobacteriaceae [CRE] is important for infection control
Objectives: To detect the prevalence of carbapenem resistant Enterobacteriaceae [CRE] species and determine their antimicrobial susceptibility profile using the Vitek 2 system and the presence of carbapenemases genes using Multiplex PCR
Methodology: Various clinical samples were collected from 469 patients from Sohag University Hospitals in the period between August 2016 and April 2018, CRE isolates were identified by conventional methods and antimicrobial susceptibility testing using disc diffusion method and also performed by Vitek 2 automated system, Multiplex PCR was used for detection of carbapenemases genes as blaKPC, blaVIM, blaIMP, blaNDM-1 and blaOXA-48
Results: The prevalence of carbapenem resistant Enterobacteriaceae [CRE] species was 19.9%, Klebsiella pneumoniae was the most common species [51.4%], Escherichia coli [28.6%], Enterobacter aerogenes[8.6%] and Acinetobacter baumannii [5.7%]. Vitek 2 system identified CRE isolates with 82.7% sensitivity, 98.6 % specificity and 90.6% diagnostic accuracy 25.7% of CRE strains were isolated from the internal ICU and 20 % from Chest Department, and mostly isolated from urine[40%] and from endotracheal tubes swabs[28.6 %] 77.1 % of CRE isolates contained carbapenemases genes, 62.1 % were blaKPC positive, 20.7 % were blaVIM-positive, 3.4 % were blaNDM-positive, 13.8 % were blaOXA-48-positive and none was blaIMP-positive
Conclusion: Conventional methods supported by Vitek 2 system is a valuable method for identification of CRE species, the detected carbapenemases genes in this study indicate that carbapenem resistance is spreading in Egypt and support the use of molecular methods for the rapid detection of CRE for successful implementation of infection control measures. We recommend routine testing to determine carbapenem resistance in Enterobacteriaceae in health facilities in Egypt
ABSTRACT
Background: phase contrast MR imaging is a rapid, simple and non-invasive technique which is sensitive to even small CSF flows, and can be used to evaluate CSF flow both qualitatively and quantitatively. Cine phase contrast MR images show CSF flow in a dynamic, more easily appreciable, and in a more pleasing manner, allowing the delineation of obstruction, if present, along the portions of CSF pathway where obstruction is common [foramen of Monro, acqueduct of Sylvius]
Patients and Methods: the study includes 20 patients from the pediatric population with ventriculomegaly [diagnosed by a radiological report] referred from Ain Shams Pediatric Hospital, Neurosurgery department at Ain Sahms University, clinic, and outpatients. Control group of 20 pediatric patients of matched age group underwent CSF flow study to obtain normal reference values. These patients had no hydrocephalus and came to our institute to undergo MRI for other neurological causes. CSF flowmetry was added to their study after obtaining oral informed consent from their parents
Results: our study included 20 patients, 8 males and 12 females, with age range 2 months - 12 years and average age 3.5 years old. All patients included were diagnosed with hydrocephalus by a previous radiological report. All patients underwent conventional MRI brain and CSF flowmetry. Patients were given diagnosis based on findings of conventional MR images, and were categorized into groups according to their underlying etiologies. 9 patients had aqueductal stenosis, 4 patients had atrophy, 2 patients had communicating hydrocephalus, 2 patients had Arnold Chiari malformation, 1 patient had Dandy-Walker variant, 1 patient had obstruction at foramen of Monro, and 1 had obstruction at foramen of Magendi. CSF flowmetry was added to evaluate the cause of hydrocephalus
Conclusion: phase contrast MR imaging is a rapid, simple and non-invasive technique which is sensitive to even small CSF flows, and can be used to evaluate CSF flow both qualitatively and quantitatively, and could be used in conjunction with conventional MRI in assessment of cases of hydrocephalus