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Abstract Background: Central line-associated bloodstream infections (CLABSIs) are among the most epidemiologically relevant health care-associated infections. The aseptic non-touch technique (ANTT) is a standardized practice used to prevent CLABSIs. In a pediatric hospital, the overall CLABSI rate was 1.92/1000 catheter days (CD). However, in one unit, the rate was 5.7/1000 CD. Methods: Nurses were trained in ANTT. For the implementation, plan-do-study-act (PDSA) cycles were completed. Adherence monitoring of the ANTT and epidemiological surveillance were performed. Results: ANTT adherence of 95% was achieved after 6 PDSA cycles. Hand hygiene and general cleaning reached 100% adherence. Port disinfection and material collection had the lowest adherence rates, with 76.2% and 84.7%, respectively. The CLABSI rate decreased from 5.7 to 1.26/1000 CD. Conclusion: The implementation of ANTT helped reduce the CLABSI rate. Training and continuous monitoring are key to maintaining ANTT adherence.
Resumen Introducción: Las infecciones relacionadas con catéteres venosos centrales son unas de las infecciones asociadas a la atención de salud con mayor relevancia epidemiológica. La técnica aséptica «no tocar¼ es una práctica estandarizada que se utiliza para prevenir estas infecciones. En un hospital pediátrico, la tasa de infecciones relacionadas con catéteres venosos centrales fue de 1.92/1000 días de catéter. Sin embargo, en una de las unidades la tasa fue de 5.7/1000 días de catéter. Método: Se capacitaron enfermeras en la técnica aséptica «no tocar¼. Para la implementación se cumplieron ciclos de planificar-hacer-estudiar-actuar (PHEA). Se realizaron seguimiento de la adherencia a la técnica y vigilancia epidemiológica. Resultados: Se logró una adherencia a la técnica aséptica «no tocar¼ del 95% después de seis ciclos. La higiene de manos y la limpieza general alcanzaron un 100% de cumplimiento. La desinfección de los puertos y la recolección de material alcanzaron la menor adherencia, con un 76.2% y un 84.7%, respectivamente. La tasa de infecciones relacionadas con catéteres venosos centrales disminuyó de 5.7 a 1.26 por 1000 días de catéter. Conclusiones: La implementación de la técnica aséptica «no tocar¼ ayudó en la reducción de infecciones relacionadas con catéteres venosos centrales. La capacitación y el seguimiento continuo son clave para mantener el cumplimiento de la técnica.
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The patient was a 6-day-and-19-hours-old girl. On March 31, 2023, she was admitted to Chongqing University JiangJin Hospital with symptoms of yellow skin staining for 3 days and fever for 6 hours. On April 1st, the Medicine Laboratory reported a critical value in blood cultures: Gram-negative bacilli, which were identified as Salmonella through mass spectrometry and biochemical tests. It was classified as non A-F group Salmonella due to negative AF and Vi serotyping results. Subsequent serum agglutination test after subculture showed O13, 23 Hz, l, w, and further results by analysis using the sequences of the 16S rRNA and gyrB genes confirmed it as Salmonellaenterica subsp. enterica Serovar Worthington Strain, consistent with the serum agglutination test result. After receiving a 14-day course of Ampicillin/Sulbact treatment for infection control, the patient′s health condition improved she was discharged from the hospital. The identification of Salmonella requires simultaneous bacterial biochemical identification and serological tests ser to ensure accurate results and provide reliable basis for etiological diagnosis.
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Blood stream infection (BSI),a blood-borne disease caused by microorganisms such as bacteria,fungi,and viruses,can lead to bacteremia,sepsis,and infectious shock,posing a serious threat to human life and health.Identifying the pathogen is central to the precise treatment of BSI.Traditional blood culture is the gold standard for pathogen identification,while it has limitations in clinical practice due to the long time consumption,production of false negative results,etc.Nanopore sequencing,as a new generation of sequencing technology,can rapidly detect pathogens,drug resistance genes,and virulence genes for the optimization of clinical treatment.This paper reviews the current status of nanopore sequencing technology in the diagnosis of BSI.
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Humanos , Secuenciación de Nanoporos , Sepsis/diagnóstico , Bacteriemia/microbiología , Bacterias , Cultivo de Sangre/métodosRESUMEN
Objective:To evaluate the efficacy of disposable disinfection cap in preventing catheter-related blood stream infections (CRBSIs).Methods:Literature on the prevention of CRBSIs by disposable disinfection caps were retrieved from CNKI, Wanfang Database, VIP database, Chinese Biomedical Literature Database, PubMed, Cochrane Library, Embase and Web of Science databases. The retrieval period was from the database construction to June 30, 2022. After literature screening, data extraction and quality evaluation were independently carried out by 2 researchers, RevMan5.4 software was used for analysis.Results:A total of 12 articles were included, including 9 832 patients. Meta-analysis results showed that compared with conventional manual disinfection, disposable disinfection cap could reduce the incidence of CRBSIs, and the difference was statistically significant ( RR = 0.58, 95% CI 0.43-0.79, P<0.01). Disposable disinfection cap could reduce the incidence of CRBSIs in adults, but there was no significant difference in the incidence of CRBSIs in children ( P>0.05). It could reduce the incidence of CRBSIs in patients with indwelling vascular catheters in ICU ( RR = 0.58, 95% CI 0.38-0.89, P<0.05), but there was no statistical difference in the incidence of CRBSIs in patients without indwelling vascular catheters in ICU ( P>0.05). In addition, the compliance of the use of disinfection caps by nursing staff was improved by 80% - 90% and the treatment cost was saved by about 282 - 464 dollars. Conclusions:Disposable disinfection caps can reduce the occurrence of CRBSIs, improve the disinfection compliance of nursing staff, and save the hospitalization cost of patients. It is suggested to be popularized in clinical practice.
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Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical bacterial isolates from bloodstream infections in China in 2021.Methods:The clinical bacterial strains isolated from blood culture from member hospitals of Blood Bacterial Resistant Investigation Collaborative System (BRICS) were collected during January 2021 to December 2021. Antibiotic susceptibility tests were conducted by agar dilution or broth dilution methods recommended by Clinical Laboratory Standards Institute (CLSI). WHONET 5.6 was used to analyze data.Results:During the study period, 11 013 bacterial strains were collected from 51 hospitals, of which 2 782 (25.3%) were Gram-positive bacteria and 8 231 (74.7%) were Gram-negative bacteria. The top 10 bacterial species were Escherichia coli (37.6%), Klebsiella pneumoniae (18.9%), Staphylococcus aureus (9.8%), coagulase-negative Staphylococci (6.3%), Pseudomonas aeruginosa (3.6%), Enterococcus faecium (3.6%), Acinetobacter baumannii (2.8%), Enterococcus faecalis (2.7%), Enterobacter cloacae (2.5%) and Klebsiella spp (2.1%). The prevalence of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant coagulase-negative Staphylococcus aureus were 25.3% and 76.8%, respectively. No glycopeptide- and daptomycin-resistant Staphylococci was detected; more than 95.0% of Staphylococcus aureus were sensitive to ceftobiprole. No vancomycin-resistant Enterococci strains were detected. The rates of extended spectrum B-lactamase (ESBL)-producing isolated in Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis were 49.6%, 25.5% and 39.0%, respectively. The prevalence rates of carbapenem-resistance in Escherichia coli and Klebsiella pneumoniae were 2.2% and 15.8%, respectively; 7.9% of carbapenem-resistant Klebsiella pneumoniae was resistant to ceftazidime/avibactam combination. Ceftobiprole demonstrated excellent activity against non-ESBL-producing Escherichia coli and Klebsiella pneumoniae. Aztreonam/avibactam was highly active against carbapenem-resistant Escherichia coli and Klebsiella pneumoniae. The prevalence rate of carbapenem-resistance in Acinetobacter baumannii was 60.0%, while polymyxin and tigecycline showed good activity against Acinetobacter baumannii (5.5% and 4.5%). The prevalence of carbapenem-resistance in Pseudomonas aeruginosa was 18.9%. Conclusions:The BRICS surveillance results in 2021 shows that the main pathogens of blood stream infection in China are gram-negative bacteria, in which Escherichia coli is the most common. The MRSA incidence shows a further decreasing trend in China and the overall prevalence of vancomycin-resistant Enterococci is low. The prevalence of Carbapenem-resistant Klebsiella pneumoniae is still on a high level, but the trend is downwards.
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Introduction: Blood stream infection are very common in the pediatric age group and these are one of the common causes of morbidity and mortality in children. In developing countries ,the rate of blood stream infection in children is about 20-50%.The present study was undertaken to determine the etiological agents causing blood stream infection and their antibiotic susceptibility pattern in pediatric patients. Patients with bacteremia may have either a transient bacteremia or persistent bacteremia which can be self-limited without development of focal infection or sequelae or may progress to a more serious fatal infection or toxic effects. The present study in a hospital basedMethodology: single centred, Observational study, of 3 years. Blood sample were collected in BacTec bottle and standard microbiological protocol were applied for the isolation identification of bacteria strains. Antimicrobial susceptibility test was performed by the Kirby Bauer Disc Diffusion Method as per CLSI 2019 guidelines. Out of total 350 bloodResults: samples received for culture,87(23.14%)were culture positive, out of which 42/87(48.27%) were Gram positive organisms and 39/87(44.82%) were Gram-negative organisms and 6 /87(6.89%) were candida spp. The most common organism was Staphylococcus aureus(31.03%) the predominant organism followed by Klebsiella pneumoniae(21.83%) and Streptococcus pneumoniae (9.19%), Escherichia coli, Enterobacter cloacae each (5.74%). All Gram positive bacteria were susceptibile to vancomycin, teicoplanin and linezolid. 11/27(40.74% )of Staphylococcus aureus were Methicillin resistant Staphylococcus aureus (MRSA) strains. All Gram negative bacteria were susceptibility to amikacin, Colistin,Tigecycline. Staphylococcus aureus is the leading cause ofConclusion: childhood septicemia in this locale, has been decline in susceptibility of the pathogens to common antibiotics which ultimately stresses on the need for continuous screening and surveillance for antibiotic resistance in the pediatric ward and calls for increased efforts to ensure more rational use of these drugs.
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Background: Bloodstream infections (BSIs) account for large-scale morbidity and mortality among cancer patients requiring a rational antibiotic policy. In Bangladesh, there is a paucity of data regarding incidence and pattern of BSI in such patients. Objective:To evaluate the pattern of BSI in cancer patients and their sensitivity and resistance toward antibiotic.Material & Methods:The present study was a retrospective analysis of BSI patterns among various cancer patients treated at Department of Oncology, Enam Medical College Hospital, Saver, Bangladesh during the period from January to June 2021. Blood culture results and their sensitivity patterns of these cancer patients along with the demographic characteristics were collected from the records and maintained in the structured pro forma. Before starting empirical antibiotics, 10 ml of blood was collected into Bract/ALERT culture media.Results:A total of 82 patients/episodes had confirmed BSI. Gram-negative bacteria accounted for 43 (52.4%) cases, followed by Gram positive 38 (46.4%) cases and 1 case of candida species. The most common organisms isolated were Klebsiella pneumonia and Staphylococcus aureus consisting of 17 cases each. The Gram-negative bacterial isolates (n = 43) were sensitive to cefoperazone plus sulbactam, piperacillin plus tazobactam, carbapenem, and colitis in 18 (41.9%), 19 (44.2%), 29 (67.4%), and 40 (93%) episodes, respectively. The sensitivity of Gram-positive bacteria (n = 38) to vancomycin, linezolid, and teicoplanin was seen in 37 (97.3%), 37 (97.3%), and 35 (92.1%) episodes, respectively. Multidrug-resistant bacteria accounted for 17 (39.5%) cases of Gram-negative isolates and 9 (53%) of which were K. pneumonia. Extended spectrum beta-lactamase activity was seen in 11 of 26 episodes of Enterobacteriaceae. Four of 17 S. aureus and 3 of 11 coagulase-negative Staphylococci were methicillin resistant, and 1 of 2 cases of Enterococcus was vancomycin resistant.Conclusions:Gram-negative bacteria are the predominant cause of BSI in cancer patients and development of a high degree of resistance to commonly used antibiotics is challenging.
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@#Abstract: To analyze the clinical, therapeutic and laboratory characteristics of disseminated cryptococcosis caused by Cryptococcus neoformans invading the blood stream in patient with liver cirrhosis and splenectomy. A 30-year-old male underwent splenectomy plus pericardial devascularization due to "splenomegaly and hypersplenism" in March in 2016. The patient had intermittent fever after operation for many times, and successively accompanied with back pain, left lower limb abscess and right hip pain. The highest body temperature was 39 ℃. CT and MRI revealed the lung lesion and multiple bone destruction. During that period, the effect of antibiotics was not good. On April 19th, 2017, Gram's stain, India ink stain, API 32C, Vitek 2 Compact, ribosomal ITS and IGS sequence analysis were performed to identify the strain isolated from the pus and blood stream. The serum of the patient was detected for cryptococcal antigen. Antifungal susceptibility test was used to determine drug sensitivity and minimum inhibitory concentration (MIC). The Cryptococcus neoformans isolated from fresh pus specimen showed a prominent, thick capsule after India ink stain. The colonies isolated from pus and blood stream were identified Cryptococcus neoformans using API 32C, Vitek 2 Compact, and sequence analysis of rDNA ITS and IGS. Cryptococcal capsule antigen was positive. The minimal inhibitory concentrations of 5-Flucytosine, amphotericin B, fluconazole, itriconazole, voriconazole against the isolate were <4 μg/mL, <0.5 μg/mL, 4 μg/mL, ≤0.25 μg/mL, 0.125 μg/mL respectively. The patient was initially treated with intravenous amphotericin B and flucytosine. After anti-Cryptococcus treatment for two months, the patient clinically improved, and the lesions were reduced on a follow-up CT scan. The patient made a full functional recovery after treatment for six months. Cryptococcosis has hidden onset, atypical clinical symptoms and lack of specificity. Blood stream is the main channel for Cryptococcus to spread and involve many organs of the whole body, including skin, bone and so on. Therefore, early use of blood culture to monitor blood flow dissemination, actively removing the primary focus and cutting off the infection route in time and carrying out effective anti-Cryptococcus treatment are conducive to the patient's early recovery.
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In recent years, driven by metagenomics sequencing technology, it has been found that compositional changes and diversity changes of gut microbiota are related to the occurrence of hematological malignancies. Gut microbiota affects the development of the hematopoietic system and the risk stratification of hematological malignancies. Microbial translocation plays an important role in and blood stream infection. Gut microbiota imbalance and blood stream infection affect the therapeutic effect of hematological malignancies. Probiotics and fecal microbiota transplant can restore the diversity of gut microbiota.
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Background: Fever, the most common complaint that led patients to seek healthcare, indicates an underlying infection which could either be simple self-limiting viral infections or life threatening bacterial infections. It's greatest challenge is the risk of occult bacteraemia, for which blood culture is the gold standard for the diagnosis. Objectives was to determine the proportion of blood culture positives among febrile children and to describe the bacteriological profile and antibiogram of blood culture isolates.Methods: A cross sectional study was done in the Department of Paediatrics and Microbiology, RIMS Hospital, Imphal. After obtaining consent (verbal assent in >7 years), blood culture samples were drawn from 200 children aged between 3 months to 12 years. The data was analysed using descriptive statistics. Chi square test was used and p-value of less than 0.05 taken as statistically significant.Results: Culture positivity was seen in 17 cases (8.5%) of which, participants who were less than 1 year of age and without proper immunisation record showed the highest positivity rate. It was higher in fever with localizing signs (9.2%) than those with fever without focus (7.8%). Gram positives constituted 11 (64.7%) of the isolates while 35.3% were Gram negatives. Staphylococcus aureus was the only Gram positive isolate. Of them, 4 were MRSA but all the strains were sensitive to Vancomycin and Linezolid. The most common Gram negative isolate was Acinetobacter spp and 80% of them were sensitive to Aminoglycosides while most of the Gram negatives were resistant to Ampicillin and 3rd generation Cephalosporins. All Acinetobacter spp were sensitive to Carbapenems but the only Pseudomonas spp isolated was sensitive only to Colistin.Conclusions: Blood culture positivity rate is relatively low in this study. However, studies with larger sample sizes are recommended to validate the findings. We emphasise the need for antibiotic stewardship