scholarly journals Molecular characterization of strong biofilm producing MDR, XDR and PDR Pseudomonas aeruginosa isolated from a tertiary care hospital in South India

2019 ◽  
Author(s):  
Bhavani Manivannan ◽  
Chanakya Pachipulusu ◽  
Balaram Khamari ◽  
Chandreyee Datta ◽  
Manmath Lama ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Resistance ◽  
Tap Water ◽  
Random Amplified Polymorphic Dna ◽  
Phylogenetic Analyses ◽  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Control Measures ◽  
Care Hospital ◽  
Sensitivity Pattern

Abstract Background : Pseudomonas aeruginosa is an opportunistic, gram negative bacterium that causes serious infections, especially among immunocompromised patients. An unusually high incidence of nosocomial P. aeruginosa infections was observed among patients hospitalized at Sri Sathya Sai Institute of Higher Medical Sciences, Puttaparthi, India, between 2014 November and 2015 February. Some of the patients being treated for a variety of cardiac and urological disorders in the Cardiothoracic and Vascular Surgery - Intensive Care Unit (CTVS-ICU) and Urology ward were found infected with P. aeruginosa . Active surveillance and environmental sampling revealed the presence of two additional MDR P. aeruginosa in the tap waters of CTVS-ICU. Based on the Antibiotic sensitivity pattern, fourteen P. aeruginosa MDR (n=7), XDR (n=6) and PDR (n=1) isolates (inclusive of the two tap water isolates) were shortlisted for additional investigations. These isolates were characterized for antibiotic sensitivity, biofilm production, minimum biofilm inhibitory concentration (MBIC), presence of antibiotic resistance genes, efflux pumps, and integrons. Results : Mutations in gyr A, gyr B, par C, mex R, nfx B, mex B and mex F genes were correlated to enhanced antibiotic resistance. Notably, the isolates were also found to harbor integrons and blaNDM-1. Pulsed Field Gel Electrophoresis (PFGE) and Random Amplified Polymorphic DNA (RAPD) based phylogenetic analyses grouped the clinical isolates into three distinct ward specific clusters, while the tap water isolates were grouped into a separate cluster. Detection of nosocomial P. aeruginosa in the CTVS-ICU and urology ward triggered the activation of enhanced surveillance and infection control measures to contain and eliminate P. aeruginosa infections. Conclusions : Multiple clones of P. aeruginosa are prevalent in the study center. Hence, continuous screening and identification of potential reservoirs is absolutely essential to control the spread of drug resistant P. aeruginosa infections.

scholarly journals Bacteriological profile with antibiotic sensitivity pattern of burn wound infections in a peripheral tertiary care hospital

2021 ◽  
Vol 8 (4) ◽  
pp. 1253
Author(s):  
Arnab Mandal ◽  
Swapan Das
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Susceptibility ◽  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Specific Pattern ◽  
Care Hospital ◽  
Wound Infections ◽  
Burn Wound ◽  
Mortality And Morbidity ◽  
Sensitivity Pattern

Background: India, has an estimated burn incidence of 6-7 million annually. Nearly 10% of these are life threatening and require hospitalization, and main cause of mortality and morbidity of these burn patients were wound infection and sepsis after 1st 24 hours. The present study was tried to determine specific pattern of burn wound infections, and antibiotic susceptibility of those isolates.Methods: After matching inclusion and exclusion criteria, total 55 patients were taken for this institution based, prospective observational study. Wound swabs were collected on day 7 and cultured aerobically in MacConkey agar and 5% blood agar and antibiotic susceptibility testing was done on Muller Hinton agar using Kirby-Bauer disc diffusion method.Results: Among study population 69.1% patients were female and majority (29.1%) of the patients belongs to age group from 21 to 30. It was found that 48 wound swabs were positive for microorganisms, of which Pseudomonas aeruginosa was most common isolated organism (23.6%), followed by Klebsiella pneumoniae (16.4%) and Staphylococcus aureus (14.5%). The most effective antibiotic found in this study was piperacillin/tazobactam, followed by imipenem/cilastatin.Conclusions: It was seen that gram-negative organisms were more prevalent. Pseudomonas aeruginosa was the most common microorganism and piperacillin/tazobactam was most effective antibiotic.

scholarly journals Isolation, identification and antibiotic sensitivity pattern of aerobic bacteria from burn wound patient admitted in tertiary care hospital

2020 ◽  
Vol 8 (6) ◽  
pp. 2095
Author(s):  
Amit Kumar Sah ◽  
Varun Goel ◽  
Siddu Lagamappagol
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Multidrug Resistant ◽  
Infectious Complications ◽  
Aetiological Factor ◽  
Research Centre ◽  
Care Hospital ◽  
Burn Wound ◽  
Sensitivity Pattern

Background: Significant burn injuries induce a state of immunosuppression that predisposes patients to infectious complications, thus the rate of nosocomial infections are higher. Rapidly merging multidrug resistant among the various isolate in indoor burn patients are depending on time-line becoming serious threat for managing therapeutically. Objective of this study is to determine the aetiological factor, prevalence, antimicrobial susceptibility pattern and emerging nosocomial pathogens.Methods: A prospective study was carried in burn ward of K.L.E.’s Dr. Prabhakar Kore Hospital and Medical Research Centre, Belgaum for the period of 1 year. Pair of wound swab were collected from patient having burnt more than 30% (RULE OF NINE) on 3rd day of stay. Sample were collected aseptically from 30 patients and processed by convectional culture and biochemical identification procedures and tested against commonly used antibiotics.Results: 30 patients that fall under inclusive criteria were enrolled in the study. The total burn surface area (TBSA) ranges from 30-82%. The ratio of female to male patient suffering burn wound in our study is 1.5:1. Aetiology of burn is heat (moist/dry) mostly. Depending upon degree of burn, most of patient suffered from 20 degree (superficial to deep) injury. From 30 swab cultures, 42 isolates were identified during the study in which mixed were 66.66% and one is fungi. The most commonly isolated is Pseudomonas aeruginosa (45.24%) then Klebsiella pneumoniae (19.04%), Acinetobacter spp. (14.28%), Staphylococccus aureus (11.90%). Among gram positive isolates, isolates are found to be most resistant to Erythromycin (100%) and Co-trimoxazole (100%) and sensitive to Vancomycin (71.42%). Among gram negative isolates are found to be most resistant to Gentamicin (91.65%), Ciprofloxacin (82.35%), Ceftazidime (82.35%) and sensitive to Meropenem (52.95%), Piperacillin (35.30%), Carbenicillin (29.41%).Conclusions: Pseudomonas aeruginosa was found to be the most common isolate. The nature of microbial wound colonization and flora changes with time should be taken into consideration in empirical antimicrobial therapy.

scholarly journals TO STUDY ANTIBIOTIC SENSITIVITY PATTERN OF NONFERMENTATIVE GRAM NEGATIVE BACILLI FROM VARIOUS CLINICAL SAMPLES IN A TERTIARY CARE HOSPITAL, JAIPUR.

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Kirti Hemwani ◽  
P. S. Nirwan ◽  
Preeti Shrivastava ◽  
Abhiraj Ramchandani
Keyword(s):  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Polymyxin B ◽  
Hospital Environment ◽  
Diffusion Method ◽  
Clinical Samples ◽  
Care Hospital ◽  
Pathogenic Potential ◽  
Gram Negative ◽  
Sensitivity Pattern

Background: Nonfermentative gram negative bacilli (NFGNB) frequently considered as commensals or contaminants but the pathogenic potential of nonfermenters has been proved beyond doubt. They are resistant to commonly used antimicrobials. Aim: This study was undertaken to identify the nonfermenters isolated from various clinical samples and to know their Antibiotic sensitivity pattern. Materials and Methods: The present study was carried out on 150 strains of Nonfermenters isolated from 1200 various non repetitive clinical samples received in Department of Microbiology, NIMS Jaipur. Nonfermenters were identified using a standard protocol and their antibiotic susceptibility testing was performed with the help of the modified Bauer disc diffusion method. Results: Out of 150 nonfermenters isolated, Pseudomonas aeruginosa was the most common isolate 134 (89.33%) followed by Acinetobacter baumannii 16 (10.67%). Among all clinical samples Pus and Wound Discharge yield maximum isolates of NFGNB i.e. 54 (36%) % followed by sputum (39.0%). Most sensitive drug against NFGNB was Polymyxin-B (100%) followed by Imipenem (86 %) and Amikacin (71.33 %). Conclusion: Nonfermenters have a great potential to survive in a hospital environment so implementation of antibiotic stewardship programs and strict infection control practices will be required to prevent or slow down their emergence and spread. Keywords:  Nonfermenters,  Polymyxin-B, Pseudomonas, Acinetobacter.

scholarly journals Phenotypic and Genotypic Detection of Methicillin Resistant Staphylococcus aureus in Health Care Workers and Its Containment in a Tertiary Care Hospital, in South India

2021 ◽  
Author(s):  
Shamim Rahman ◽  
Ragini Ananth Kashid
Keyword(s):  
Staphylococcus Aureus ◽  
Tertiary Care ◽  
Meca Gene ◽  
Control Measures ◽  
Care Hospital ◽  
Beta Lactam ◽  
Accurate Identification ◽  
Mortality And Morbidity ◽  
Sensitivity Pattern ◽  
Hospital Infection Control

MRSA causes nosocomial and community based infections. It is associated with significant mortality and morbidity. Resistance in MRSA is encoded by mecA gene. Anterior nares are the ecological niche of Staphylococcus aureus. HCWs who are colonized with MRSA, act as agents of cross contamination of hospital and community acquired MRSA. Treating MRSA infections is a therapeutic challenge as it is resistant to beta lactam group of drugs. Therefore, there is a need for rapid and accurate detection of MRSA carriage in HCWs and to understand its antibiotic susceptibility pattern.The objective of the present study is to estimate the occurrence of MRSA in HCWs, using phenotypic and genotypic methods. A prospective study for six months was conducted after obtaining Institutional Ethical Committee clearance. Anterior nasal swabs of those HCWs who gave informed consent were taken processed for culture and sensitivity as per standard protocol. To detect MIC for oxacillin, E-strip method was used. mecA gene detection was done by PCR. A total of 300 HCWs were sampled.14.66% (44/300) of the isolates were identified as Staphylococcus aureus, of which 10 isolates were detected as MRSA. The overall isolation rate of MRSA is 3.33 %(10/300). MRSA carriage was high amongst nurses (5/59, 8.47%), followed by doctors (4/105, 3.80%).Antibiotic sensitivity pattern showed that highest resistance was to penicillin (75%) followed by amoxiclav (70.45 %).9 MRSA isolates were detected as mecA gene positive by PCR. MRSA carriers were decontaminated successfully with 2% mupirocin ointment and 2% chlorhexidine shampoo. This study reiterates the need for rapid and accurate identification of HCWs who have nasal colonization with MRSA, for reinforcing hospital infection control measures and decontamination protocol. This will help prevent the spread of MRSA in our community.

scholarly journals Prevalence and antibiotic susceptibility pattern of Klebsiella species isolated from various clinical samples in a tertiary care hospital Coimbatore

2021 ◽  
Vol 8 (10) ◽  
pp. 4886
Author(s):  
Vijayashree V. ◽  
Saikeerthana D. ◽  
Prabha P.
Keyword(s):  
Antibiotic Susceptibility ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Antibiotic Sensitivity ◽  
Clinical Samples ◽  
Care Hospital ◽  
Susceptibility Pattern ◽  
Klebsiella Species ◽  
Antibiotic Susceptibility Pattern ◽  
Sensitivity Pattern

Background: The genus Klebsiella of Enterobacteriaceae family is ubiquitous in nature. They cause many nosocomial infections like pneumonia, urinary tract infections, wound infections, bacteremia and septicemia. Multidrug resistance is seen in Klebsiella which serves as the most common cause of increased morbidity and mortality. This study reveals the prevalence and antibiotic sensitivity pattern of Klebsiella species from various clinical samples. The primary objectives are as follows: To isolate and characterize Klebsiella species from various clinical samples. To study the antibiotic susceptibility pattern of Klebsiella isolates.Methods: This prospective study was conducted in our tertiary care hospital during the period from August 2019 to October 2019. A total of 3521 samples were tested during this period. The samples include blood, sputum, urine, and pus.Results: Out of the total samples tested,1106 samples were showing the growth of the organisms. Among this,351 were identified as Klebsiella species and the highest rate of isolation of Klebsiella species is from the sputum sample and also the same was reported high in medical wards. The study also shows that the isolation of Klebsiella species shows male preponderance when compared to females. The antibiotic sensitivity pattern was done by Kirby-Bauer's disc diffusion method and the sensitivity was noted to be higher to amikacin and ciprofloxacin.Conclusions: Thus, this study shows the prevalence rate of Klebsiella species and sensitivity pattern of Klebsiella, which may help select appropriate antibiotics and prevent overuse and misuse of antibiotics.

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