scholarly journals 1312. Evaluation of a Multiplexed PCR Pneumonia Panel in a Tertiary Care Medical Center

2021 ◽  
Vol 8 (Supplement_1) ◽  
pp. S744-S744
Author(s):  
Erin Su ◽  
Rosemary She
Keyword(s):  
Medical Center ◽  
Bacterial Pathogens ◽  
Tertiary Care ◽  
Significant Proportion ◽  
Respiratory Pathogens ◽  
Normal Flora ◽  
Gram Negative ◽  
Multiplexed Pcr ◽  
Tertiary Care Medical Center ◽  
Work Up

Abstract Background Syndromic PCR testing for lower respiratory pathogens may give rapid, actionable results to aid in management decisions for suspected pneumonia cases. We sought to evaluate the performance of a multiplexed PCR pneumonia panel compared to routine microbiologic work-up in a tertiary care patient population. Methods Sputum and bronchoalveolar lavage (BAL) samples from Keck Medical Center (Los Angeles, CA) inpatients submitted for clinical microbiology work-up Dec 2019-Jun 2020 were tested by a multiplexed PCR panel (FilmArray Pneumonia Panel, BioFire Diagnostics). We compared panel results for typical bacterial pathogens to those of quantitative culture and susceptibility testing. We retrospectively determined the incidence of non-panel respiratory pathogens as detected by standard of care tests in this patient cohort. Results 68 of 180 samples yielded 80 positive bacterial PCR results: 34 were detected by both PCR panel and culture and 46 by PCR panel only, yielding a sensitivity of 100% (34/34) for pathogens detected and specificity of 73.1% (114/156) among negative cultures (normal flora or no growth). Concordant results had PCR Bin values ≥10^5 copies/mL whereas all 18 targets detected at 10^4 copies/mL were culture-negative. Among resistance gene targets, the panel detected 12 MRSA specimens, of which MRSA grew in only 4 cultures; E. coli and CTX-M in 1 specimen from which grew normal flora; and multiple gram-negative organisms and KPC in 1 specimen from which culture isolated carbapenem-resistant P. aeruginosa. Quantitation from positive BAL cultures (n=25) correlated weakly with PCR Bin values (R-squared=0.17). Non-PCR panel pathogens were detected in 22 of 180 (12.2%) specimens through routine methods (16 molds, 3 AFB, and 3 non-fermenter gram-negative bacteria). Conclusion The pneumonia panel had excellent sensitivity for its target bacterial pathogens, but results were often positive in negative cultures. This could be due to antecedent antibiotic therapy, differences in reporting threshold versus culture, or inability of PCR to discern results from normal flora. Non-panel pathogens were detected in a significant proportion in our population. The pneumonia panel should be implemented and interpreted carefully with consideration of antimicrobial stewardship. Disclosures All Authors: No reported disclosures

scholarly journals Risk factors of initial inappropriate antibiotic therapy and the impacts on outcomes of neonates with gram-negative bacteremia

2019 ◽  
Author(s):  
Shih-Ming Chu ◽  
Jen-Fu Hsu ◽  
Mei-Yin Lai ◽  
Hsuan-Rong Huang ◽  
Ming-Chou Chiang ◽  
...  
Keyword(s):  
Antibiotic Therapy ◽  
Neonatal Intensive Care ◽  
Medical Center ◽  
Tertiary Care ◽  
Generation Cephalosporin ◽  
Resistant Bacteria ◽  
Empirical Antibiotic Therapy ◽  
Gram Negative ◽  
Tertiary Care Medical Center ◽  
Gram Negative Bacteremia

Abstract Background Timely appropriate empirical antibiotic plays an important role in critically ill patients with gram-negative bacteremia. However, the relevant data and significant impacts have not been well studied in the neonatal intensive care unit (NICU).Methods An 8-year (1 January 2007-31 December 2014) cohort study of all NICU patients with gram-negative bacteremia in a tertiary-care medical center was performed. Inadequate empirical antibiotic therapy was defined when a patient didn’t receive any antimicrobial agent to which the causative microorganisms were susceptible within 24 hour of blood culture sampling.Results Among 376 episodes of Gram-negative bacteremia, 75 (19.9%) received inadequate empirical antibiotic therapy. The cause of inadequate treatment was mostly due to the pathogen resistant to prescribed antibiotics (88.0%), and Pseudomonas aeruginosa (Odds ratio [OR]: 20.8, P < 0.001) and ESBL-producing bacteria (OR: 18.4, P < 0.001) had the highest risk. Previous exposure with 3rd generation cephalosporin was identified as the only independent risk factor (OR: 2.52, 95% CI: 1.18-5.37, P = 0.018). Empirically inadequately treated bacteremias were significantly more likely to have worse outcomes than those with adequate therapy, including more prolonged illness, higher rate of infectious complications (25.3% versus 9.3%, P < 0.001) and overall mortality (22.7% versus 11.0%, P = 0.013).Conclusions Inadequate empirical antibiotic therapy occurs in one-fifth of Gram-negative bacteremias in the NICU, and is associated with worse outcomes. Further effort to decrease emergence of antibiotic resistance and highly suspicion of infection by drug-resistant bacteria clinically is important to reduce rates of inadequacy.

scholarly journals Prevalence of Community Acquired Uropathogens and their Antimicrobial Susceptibility in Patients from the Urology Unit of A Tertiary Care Medical Center

2020 ◽  
Vol 14 (3) ◽  
pp. 2009-2015
Author(s):  
Manzoor Ahmad ◽  
Pushkar Kumar ◽  
Asfia Sultan ◽  
Anees Akhtar ◽  
Bhanu Chaudhary ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Medical Center ◽  
Tertiary Care ◽  
Carbapenem Resistance ◽  
Urine Specimen ◽  
Aminoglycoside Resistance ◽  
Gram Negative ◽  
Beta Lactamases ◽  
Tertiary Care Medical Center ◽  
Tract Infections

Urinary tract infections (UTI) are one of the most common community acquired infections and can also present with similar lower urinary tract symptoms (LUTS). Moreover, UTI can be a complication of these urological diseases. Thus, this study was conducted in patients with LUTS to find out the prevalence of uro-pathogens and their antibiotic susceptibility pattern so that appropriate antibiotics can be started on clinical suspicion of UTI. The study was conducted over a period of 12 months. Culture and susceptibility of urine specimen was done as per standard microbiological guidelines. Apart from the growth of common bacteria with their antibiogram, Methicillin-resistant Staphylococcus aureus (MRSA), high level aminoglycoside resistance (HLAR) was investigated among Enterococci, and metallo beta-lactamases(MBL) production was production was investigated among gram-negative pathogens. Out of 407 urine samples included in the study, 80 (19.6%) samples showed bacterial growth. The commonest isolate was E. coli 44 (55 %). Majority of the isolates were multidrug resistant with two E.coli strains showing pan-resistance to the first line drugs tested. Carbapenem resistance was seen in 67.2% of all gram negative isolates tested. Metallo beta-lactamases production was found to be highest among the Klebsiella isolates. Among the Enterobacterales, highest susceptibility was noted to Fosfomycin (87.7%) followed by Nitrofurantoin (62.7%). Similarly in gram positive group, highest susceptibility was again to Fosfomycin followed by Nitrofurantoin. Overall the prevalence of MDR is increasing however Fosfomycin or Nitrofurantoin, both oral antibiotics, can be the considered for starting empirical antibiotic therapy.

scholarly journals Risk factors of initial inappropriate antibiotic therapy and the impacts on outcomes of neonates with gram-negative bacteremia

2019 ◽  
Author(s):  
Shih-Ming Chu ◽  
Jen-Fu Hsu ◽  
Mei-Yin Lai ◽  
Hsuan-Rong Huang ◽  
Ming-Chou Chiang ◽  
...  
Keyword(s):  
Antibiotic Therapy ◽  
Neonatal Intensive Care ◽  
Medical Center ◽  
Tertiary Care ◽  
Generation Cephalosporin ◽  
Resistant Bacteria ◽  
Empirical Antibiotic Therapy ◽  
Gram Negative ◽  
Tertiary Care Medical Center ◽  
Gram Negative Bacteremia

Abstract Background Timely appropriate empirical antibiotic plays an important role in critically ill patients with gram-negative bacteremia. However, the relevant data and significant impacts have not been well studied in the neonatal intensive care unit (NICU). Methods An 8-year (1 January 2007-31 December 2014) cohort study of all NICU patients with gram-negative bacteremia in a tertiary-care medical center was performed. Inadequate empirical antibiotic therapy was defined when a patient didn’t receive any antimicrobial agent to which the causative microorganisms were susceptible within 24 hour of blood culture sampling. Results Among 376 episodes of Gram-negative bacteremia, 75 (19.9%) received inadequate empirical antibiotic therapy. The cause of inadequate treatment was mostly due to the pathogen resistant to prescribed antibiotics (88.0%), and Pseudomonas aeruginosa (Odds ratio [OR]: 20.8, P < 0.001) and ESBL-producing bacteria (OR: 18.4, P < 0.001) had the highest risk. Previous exposure with 3rd generation cephalosporin was identified as the only independent risk factor (OR: 2.52, 95% CI: 1.18-5.37, P = 0.018). Empirically inadequately treated bacteremias were significantly more likely to have worse outcomes than those with adequate therapy, including more prolonged illness, higher rate of infectious complications (25.3% versus 9.3%, P < 0.001) and overall mortality (22.7% versus 11.0%, P = 0.013). Conclusions Inadequate empirical antibiotic therapy occurs in one-fifth of Gram-negative bacteremias in the NICU, and is associated with worse outcomes. Further effort to decrease emergence of antibiotic resistance and highly suspicion of infection by drug-resistant bacteria clinically is important to reduce rates of inadequacy.

scholarly journals Risk Factors of Initial Inappropriate Antibiotic Therapy and the Impacts on Outcomes of Neonates with Gram-Negative Bacteremia

Antibiotics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 203
Author(s):  
Shih-Ming Chu ◽  
Jen-Fu Hsu ◽  
Mei-Yin Lai ◽  
Hsuan-Rong Huang ◽  
Ming-Chou Chiang ◽  
...  
Keyword(s):  
Antibiotic Therapy ◽  
Neonatal Intensive Care ◽  
Medical Center ◽  
Tertiary Care ◽  
Pathogen Resistance ◽  
Optimal Timing ◽  
Empirical Antibiotic Therapy ◽  
Gram Negative ◽  
Tertiary Care Medical Center ◽  
Gram Negative Bacteremia

Background: Timely appropriate empirical antibiotic plays an important role in critically ill patients with gram-negative bacteremia. However, the relevant data and significant impacts have not been well studied in the neonatal intensive care unit (NICU). Methods: An 8-year (1 January 2007–31 December 2014) cohort study of all NICU patients with gram-negative bacteremia (GNB) in a tertiary-care medical center was performed. Inadequate empirical antibiotic therapy was defined when a patient did not receive any antimicrobial agent to which the causative microorganisms were susceptible within 24 h of blood culture sampling. Neonates with GNB treated with inadequate antibiotics were compared with those who received initial adequate antibiotics. Results: Among 376 episodes of Gram-negative bacteremia, 75 (19.9%) received inadequate empirical antibiotic therapy. The cause of inadequate treatment was mostly due to the pathogen resistance to prescribed antibiotics (88.0%). Bacteremia caused by Pseudomonas aeruginosa (Odds ratio [OR]: 20.8, P < 0.001) and extended spectrum β-lactamase (ESBL)-producing bacteria (OR: 18.4, P < 0.001) had the highest risk of inadequate treatment. Previous exposure with third generation cephalosporin was identified as the only independent risk factor (OR: 2.52, 95% CI: 1.18–5.37, P = 0.018). Empirically inadequately treated bacteremias were significantly more likely to have worse outcomes than those with adequate therapy, including a higher risk of major organ damage (20.0% versus 6.6%, P < 0.001) and infectious complications (25.3% versus 9.3%, P < 0.001), and overall mortality (22.7% versus 11.0%, P = 0.013). Conclusions: Inadequate empirical antibiotic therapy occurs in one-fifth of Gram-negative bacteremias in the NICU, and is associated with worse outcomes. Additional prospective studies are needed to elucidate the optimal timing and aggressive antibiotic regimen for neonates who are at risk of antibiotic-resistant Gram-negative bacteremia.

scholarly journals EVALUATION OF FACTORS ASSOCIATED WITH MORTALITY AMONGST PATIENTS ADMITTED TO A TERTIARY CARE MEDICAL CENTER FOR COVID-19 INFECTION

2021 ◽  
Vol 77 (18) ◽  
pp. 3123
Author(s):  
Anish Samuel ◽  
Ashesha Mechineni ◽  
Robin Craven ◽  
Wilbert Aronow ◽  
Mourad Ismail ◽  
...  
Keyword(s):  
Medical Center ◽  
Tertiary Care ◽  
Factors Associated ◽  
Tertiary Care Medical Center

scholarly journals Evaluation of post-ERCP pancreatitis after biliary stenting with self-expandable metal stents vs. plastic stents in benign and malignant obstructions

2021 ◽  
Vol 09 (06) ◽  
pp. E888-E894
Author(s):  
Nichol S. Martinez ◽  
Sumant Inamdar ◽  
Sheila N. Firoozan ◽  
Stephanie Izard ◽  
Calvin Lee ◽  
...  
Keyword(s):  
Pancreatic Duct ◽  
Medical Center ◽  
Tertiary Care ◽  
Plastic Stents ◽  
Metal Stents ◽  
Limited Data ◽  
Sems Group ◽  
Tertiary Care Medical Center ◽  
Stent Type ◽  
Pancreatic Duct Stent

Abstract Background and study aims There are conflicting data regarding the risk of post-ERCP pancreatitis (PEP) with self-expandable metallic stents (SEMS) compared to polyethylene stents (PS) in malignant biliary obstructions and limited data related to benign obstructions. Patients and methods A retrospective cohort study was performed of 1136 patients who underwent ERCP for biliary obstruction and received SEMS or PS at a tertiary-care medical center between January 2011 and October 2016. We evaluated the association between stent type (SEMS vs PS) and PEP in malignant and benign biliary obstructions. Results Among the 1136 patients included in our study, 399 had SEMS placed and 737 had PS placed. Patients with PS were more likely to have pancreatic duct cannulation, pancreatic duct stent placement, double guidewire technique, sphincterotomy and sphincteroplasty as compared to the SEMS group. On multivariate analysis, PEP rates were higher in the SEMS group (8.0 %) versus the PS group (4.8 %) (OR 2.27 [CI, 1.22, 4.24]) for all obstructions. For malignant obstructions, PEP rates were 7.8 % and 6.6 % for SEMS and plastic stents, respectively (OR 1.54 [CI, 0.72, 3.30]). For benign obstructions the PEP rate was higher in the SEMS group (8.8 %) compared to the PS group (4.2 %) (OR 3.67 [CI, 1.50, 8.97]). No significant differences between PEP severity were identified based on stent type when stratified based on benign and malignant. Conclusions PEP rates were higher when SEMS were used for benign obstruction as compared to PS. For malignant obstruction, no difference was identified in PEP rates with use of SEMS vs PS.

Utility of electroencephalography: Experience from a U.S. tertiary care medical center

2016 ◽  
Vol 127 (10) ◽  
pp. 3335-3340 ◽  
Author(s):  
Kapil Gururangan ◽  
Babak Razavi ◽  
Josef Parvizi
Keyword(s):  
Medical Center ◽  
Tertiary Care ◽  
Tertiary Care Medical Center

Nosocomial Methicillin-Resistant and Methicillin-SusceptibleStaphylococcus AureusPrimary Bacteremia: At What Costs?

1999 ◽  
Vol 20 (6) ◽  
pp. 408-411 ◽  
Author(s):  
Murray A. Abramson ◽  
Daniel J. Sexton
Keyword(s):  
Hospital Stay ◽  
Medical Center ◽  
A Priori ◽  
Tertiary Care ◽  
Length Of Hospital Stay ◽  
Bloodstream Infections ◽  
Methicillin Resistant ◽  
Tertiary Care Medical Center ◽  
Matching Criteria ◽  
Nested Case Control

Objective:To determine the attributable hospital stay and costs for nosocomial methicillin-sensitive Staphylococcus aureus (MSSA) and methicillin-resistantS aureus(MRSA) primary bloodstream infections (BSIs).Design:Pairwise-matched (1:1) nested case-control study.Setting:University-based tertiary-care medical center.Patients:Patients admitted between December 1993 and March 1995 were eligible. Cases were defined as patients with a primary nosocomialS aureusBSI; controls were selected according to a priori matching criteria.Measurements:Length of hospital stay and total and variable direct costs of hospitalization.Results:The median hospital stay attributable to primary nosocomial MSSA BSI was 4 days, compared with 12 days for MRSA (P=.023). Attributable median total cost for MSSA primary nosocomial BSIs was $9,661 versus $27,083 for MRSA nosocomial infections (P=.043).Conclusion:Nosocomial primary BSI due toS aureussignificantly prolongs the hospital stay. Primary nosocomial BSIs due to MRSA result in an approximate threefold increase in direct cost, compared with those due to MSSA.

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