The most common causes of bacteremia and determination of antibiotic sensitivity pattern

2021 ◽  
Vol 3 (4) ◽  
pp. 117
Author(s):  
Jamshid Ayatollahi ◽  
Seyed Mousavi ◽  
Abbas Hajighasemi ◽  
Seyed Shahcheraghi
Keyword(s):  
Antibiotic Sensitivity ◽  
Sensitivity Pattern ◽  
Common Causes

scholarly journals Determination of Antibiotic Sensitivity Pattern of <i>Helicobacter pylori</i> Isolates from South India Population

2012 ◽  
Vol 02 (03) ◽  
pp. 263-267 ◽  
Author(s):  
Khawaja Shakeel Ahmed ◽  
Anghesom Ambesajir Ghebremedhin ◽  
Aleem Ahmed Khan ◽  
Santosh K. Tiwari ◽  
J. D. Ahi ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
South India ◽  
Antibiotic Sensitivity ◽  
Sensitivity Pattern

scholarly journals Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish

1970 ◽  
Vol 1 (4) ◽  
pp. 82-88 ◽  
Author(s):  
MJ Foysal ◽  
MM Rahman ◽  
M Alam
Keyword(s):  
Antibacterial Activity ◽  
Pseudomonas Fluorescens ◽  
Plant Extracts ◽  
Antibiotic Sensitivity ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Leaf Extracts ◽  
Sensitivity Pattern ◽  
Medicinal Plant Extracts

Studies were conducted to identify Pseudomonas fluorescens isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as P. fluorescens by morphological, physiological and biochemical tests. In vitro antibiotic sensitivity test of the P. fluorescens isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the P. fluorescens isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of Tamarindus indicus, Terminalia chebula, Citrus aurantifolia, Eugenia caryophyllata and Spondias pinnata were found to inhibit the growth of all of the P. fluorescens isolates. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9733 IJNS 2011 1(4): 82-88

scholarly journals Bacteriophage-derived CHAP domain protein, P128, kills Staphylococcus cells by cleaving interpeptide cross-bridge of peptidoglycan

Microbiology ◽  
2014 ◽  
Vol 160 (10) ◽  
pp. 2157-2169 ◽  
Author(s):  
Sudarson Sundarrajan ◽  
Junjappa Raghupatil ◽  
Aradhana Vipra ◽  
Nagalakshmi Narasimhaswamy ◽  
Sanjeev Saravanan ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Mechanism Of Action ◽  
Catalytic Domain ◽  
Antibiotic Sensitivity ◽  
High Sensitivity ◽  
Common Mechanism ◽  
Cross Bridge ◽  
Sensitivity Pattern

P128 is an anti-staphylococcal protein consisting of the Staphylococcus aureus phage-K-derived tail-associated muralytic enzyme (TAME) catalytic domain (Lys16) fused with the cell-wall-binding SH3b domain of lysostaphin. In order to understand the mechanism of action and emergence of resistance to P128, we isolated mutants of Staphylococcus spp., including meticillin-resistant Staphylococcus aureus (MRSA), resistant to P128. In addition to P128, the mutants also showed resistance to Lys16, the catalytic domain of P128. The mutants showed loss of fitness as shown by reduced rate of growth in vitro. One of the mutants tested was found to show reduced virulence in animal models of S. aureus septicaemia suggesting loss of fitness in vivo as well. Analysis of the antibiotic sensitivity pattern showed that the mutants derived from MRSA strains had become sensitive to meticillin and other β-lactams. Interestingly, the mutant cells were resistant to the lytic action of phage K, although the phage was able to adsorb to these cells. Sequencing of the femA gene of three P128-resistant mutants showed either a truncation or deletion in femA, suggesting that improper cross-bridge formation in S. aureus could be causing resistance to P128. Using glutathione S-transferase (GST) fusion peptides as substrates it was found that both P128 and Lys16 were capable of cleaving a pentaglycine sequence, suggesting that P128 might be killing S. aureus by cleaving the pentaglycine cross-bridge of peptidoglycan. Moreover, peptides corresponding to the reported cross-bridge of Staphylococcus haemolyticus (GGSGG, AGSGG), which were not cleaved by lysostaphin, were cleaved efficiently by P128. This was also reflected in high sensitivity of S. haemolyticus to P128. This showed that in spite of sharing a common mechanism of action with lysostaphin, P128 has unique properties, which allow it to act on certain lysostaphin-resistant Staphylococcus strains.

Evaluation of Bacteriological Profile in Active Mucosal Chronic Otitis Media - A Cross-Sectional Study

2021 ◽  
Vol 8 (02) ◽  
pp. 80-84
Author(s):  
Smitha B ◽  
Swapna U.P ◽  
Salilkumar K
Keyword(s):  
Staphylococcus Aureus ◽  
Otitis Media ◽  
Bacterial Growth ◽  
Chronic Otitis Media ◽  
Antibiotic Sensitivity ◽  
Maximum Sensitivity ◽  
Biochemical Tests ◽  
Coagulase Negative Staphylococci ◽  
Sensitivity Pattern ◽  
Two Samples

BACKGROUND Active mucosal chronic otitis media (COM) is a disease of the middle ear cleft associated with inflammation and production of pus. The incidence is high in developing countries. It affects all age groups and both genders. If not properly treated, it can lead to complications. The bacterial isolates and their sensitivity pattern vary from place to place and also over time. Early identification of the microorganisms and their antibiotic sensitivity patterns helps in proper selection of antibiotics and quick recovery in COM patients. METHODS Fifty patients with active mucosal COM were selected for the study. The study was conducted over a period of one year. Ear swab from the deep external auditory canal was collected under strict aseptic precautions from these patients before starting antibiotic treatment. Microorganisms were identified by gram staining, growth on different agar plates, and various biochemical tests. Antibiotic sensitivity was done by the Kirby-Bauer method. RESULTS Majority of the patients were in the age group of 21 - 40 years (42 %) with female preponderance (62 %). All patients had a central perforation in the tympanic membrane (100 %). Bacterial growth was seen in 44 samples (88 %). Two samples (4 %) showed fungal growth. Four samples (8 %) showed no growth even after 48 hours of incubation. Single bacterium was isolated in 41 cases (82 %) whereas 3 samples (6 %) showed more than one bacterial growth. The predominant bacteria were Pseudomonas aeruginosa (50 %) followed by Staphylococcus aureus. The other isolates were coagulase negative staphylococci, enterococci, enterobacter, acinetobacter, and E coli. Pseudomonas showed maximum sensitivity to amikacin, imipenem and piperacillin / tazobactam (100 %). The most effective antibiotics for staphylococcus was vancomycin and linezolid. CONCLUSIONS The most common bacteria isolated in active mucosal COM were pseudomonas followed by Staphylococcus aureus. The most effective antibiotics for pseudomonas was amikacin, imipenem and piperacillin / tazobactam. Staphylococcus showed maximum sensitivity to vancomycin and linezolid. KEYWORDS Chronic Otitis Media (COM), Active Mucosal, Ear Swab, Bacteriology, Sensitivity

A Comparative Cross-Sectional Study to compare the Isolated Organism and their Antibiotic Sensitivity Pattern Between Community-Acquired Pneumonia (CAP) and Ventilator-Associated Pneumonia (VAP) in Intensive Care Unit (ICU).

2021 ◽  
Vol 11 (Number 2) ◽  
pp. 26-34
Author(s):  
Nahian Ahmed Chowdhury ◽  
Dipak Kumar Mitra ◽  
Afrin Ahmed Clara ◽  
Md. Suhail Alam ◽  
MD. Zahed Hossain
Keyword(s):  
Medical Information ◽  
Antibiotic Sensitivity ◽  
Cross Sectional Study ◽  
Community Acquired Pneumonia ◽  
Ventilator Associated Pneumonia ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mechanically Ventilated ◽  
Sensitivity Pattern ◽  
Staphylococcus Spp

Background: The moment most common cause of in-hospital infection is pneumonia. Pneumonia is prevalent within the ICU (Intensive Care Unit) setting and can be deadly. The Incidence of pneumonia is approximately 17% in the therapeutic ICU2 but can be 6 to 20 times increased in mechanically ventilated patients. The duration of hospital stay and expenditure are both expanded in patients who develop ventilator-associated pneumonia. This study aims to identify the causative microorganism responsible for CAP (Community-Acquired Pneumonia) and VAP (Ventilator-Associated Pneumonia) and their antibiotic sensitivity pattern. Methods: This was a comparative cross-sectional study that was carried out at two ICU in Sylhet city. The data was collected from the patient's medical information, the patient's file, and the hospital information system. Culture and sensitivity (C/S) were collected from the electronic medical information system (MIS). All data from January 2019 to December 2020, including patient's information, course of the disease (in terms of death or recovery-if available), clinical features, and investigation reports, was transferred to an electronic data collection sheet (Microsoft Excel). After completion of all data collection, analysis was conducted through a spreadsheet. Comparison between two disease groups was made by independent t-test. Within the group, the analysis was done by the Chi-Square test. Results: In this thesis study, it was found that the most common organism responsible for CAP was Streptococcus spp. (34.70%) and is sensitive to Meropenem (92.21%), Imipenem (88.16%), Amikacin (70.67%), Piperacillin (70.91%), Moxifloxacin (70.96%), Levofloxacin (67.95%), Amoxiclav (67.92%), and Ceftriaxone(63.95%). The most common causative organism responsible for VAP was Staphylococcus spp. (36.51%) and it was sensitive to Imipenem (100%), Moxifloxacin (100%), Meropenem (94.73%), Amikacin (85.71%), Ceftriaxone (60%), Amoxiclav (66.66%), Levofloxacin (57.14%), and Cefuroxime (50%). Conclusion: Pneumonia is still one of the most common reasons for hospitalization, particularly for those admitted to ICU. It has been observed in several studies that the majority of the cases are communityacquired pneumonia. Many mechanically ventilated patients often develop VAP, which is fatal if timely diagnosis and appropriate antibiotics administration are not made. Streptococcus spp. was the most common organism responsible for CAP, and Staphylococcus spp. mainly was responsible for VAP.

scholarly journals EMERGENCE AND ANTIBIOTIC SENSITIVITY PATTERN OF ACINETOBACTER BAUMANNII IN HOSPITAL FACILITY

2017 ◽  
Vol 10 (3) ◽  
pp. 77
Author(s):  
Anania Arjuna ◽  
Dinobandhu Nandi
Keyword(s):  
Acinetobacter Baumannii ◽  
Nosocomial Infections ◽  
Antibiotic Sensitivity ◽  
Hospital Environment ◽  
Sensitivity Testing ◽  
Hospital Acquired Infection ◽  
Clinical Specimens ◽  
Sensitivity Pattern ◽  
Tract Infections ◽  
Hospital Acquired

ABSTRACTObjective: Nosocomial infections or Hospital acquired infection (HAI) are one of the major threats to hospitalized patients as well as for the hospitalassociated personnel. In last few years there is a gross change in causative agents, new organisms have come out with great threat to hospitals as theypossess antibiotic resistance property e.g. production of biofilm, production of enzymes such as β- lactamases. Among many organisms, Acinetobacterbaumannii has emerged as a potent nosocomial pathogen. Our objective of this study was to find the burden of Acinetobacter baumannii infectionswhich are associated as nosocomial infections and to determine the drug of choice for an effective treatment.Methods: Clinical specimens were collected from patients of different unit of the hospital by maintaining universal precautions and standardmicrobiological protocols. All the respective specimens were cultured in respective culture medium i.e. MacConkey agar, blood agar, chocolate agar,cysteine lactose electrolyte deficient (CLED) agar and, fluid thioglycolate (TG) medium at 37˚C for 24-48 hours. After incubation of 24-48 hours cultureplates were examined for bacterial growth and identification and antibiotic sensitivity test was made by Vitek2 compact.Result: The study was conducted at the department of microbiology from January 2016 to April 2016. A total of 2582 specimens were collected andprocessed for identification and sensitivity testing. Specimens of all age group (2 days- 93 years) and both sexes were processed for identificationof A. baumannii and antibiotic sensitivity testing. A total of 119 isolates (4.60%) of A. baumannii were obtained from 2582 clinical specimens. Themost common infection A. baumannii was found as lower respiratory tract infection (89.07%) followed by abscess (6.72%), septicaemia (2.52%),urinary tract infections (0.84%), and soft tissue infections (0.84%). The maximum sensitivity of A. baumannii isolates were seen to Colistin (CL) (119,100%), followed by Tigecycline (TGC) (63, 52.94%) and Minocycline (MIN) (27, 22.69%). The maximum resistant was observed for Imipenem (IMI),Aztreonam (AZT) and Ticarcillin- clavulanic acid (TIC) (119, 100%).Conclusion: The Gram- negative coccobacillus, Acinetobacter baumannii poses a formidable threat to patients. It has emerged as a superbug inhospital environment particularly in ICU units. The chances of A. baumannii infections increase in the presence of iatrogenic factors like inadequatelong- term antibiotic therapy and new interventions in a medical facility. To control the burden of Acinetobacter infections new therapies suchas combine therapy must be obtained and followed with proper dose as recommend by physicians; along with awareness of the importance ofthis infection should be implicated. Proper sanitation, good housekeeping, sterilization of equipment, hand hygiene, water purification, isolationprocedures and maintaining of the hospital environment, use of infection control practices are some of the measures to control the transmission ofAcinetobacter spp. among hospital personnel.Keywords: Acinetobacter baumannii, Biofilm, β-lactamases, Hospital acquired infection.

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