scholarly journals Effects of two blood culture anticoagulants on growth of Neisseria meningitidis

1978 ◽  
Vol 7 (4) ◽  
pp. 332-336
Author(s):  
L Rintala ◽  
H M Pollock
Keyword(s):  
Blood Culture ◽  
Neisseria Meningitidis ◽  
Yeast Extract ◽  
Brain Heart Infusion ◽  
Inhibitory Effect ◽  
Inoculum Size ◽  
Blood Cultures ◽  
Artificial Blood

Tests of 25 strains of Neisseria meningitidis for sensitivity to sodium polyanethol sulfonate (SPS) showed that the sensitivity of strains varied with both inoculum size and SPS concentration. In Trypticase soy broth (TSB), 2 out of 13 strains were sensitive to 0.05% SPS, whereas 8 out of 13 strains were sensitive to the same concentration of SPS in brain heart infusion (BHI). In artificial blood cultures with six strains of meningococci, the addition of 10% defibrinated blood was found to eliminate the sensitivity of all six strains to SPS in BHI, but not of the two strains in TSB. Addition of 1.2% gelatin to artificial blood cultures eliminated the inhibitory effect of 0.05% SPS, whereas the addition of 1% yeast extract to blood cultures containing 0.025% or 0.05% SPS enhanced the inhibitory effect of this anticoagulant. None of the 13 strains tested was inhibited by 0.05% sodium amylosulfate in TSB or BHI alone or in artificial blood cultures with these media.

scholarly journals Gelatin neutralization of the inhibitory effect of sodium polyanethol sulfonate on Neisseria meningitidis in blood culture media

1977 ◽  
Vol 6 (1) ◽  
pp. 1-3 ◽  
Author(s):  
J Eng ◽  
E Holten
Keyword(s):  
Blood Culture ◽  
Neisseria Meningitidis ◽  
Growth Medium ◽  
Solid Medium ◽  
Culture Media ◽  
Inhibitory Effect ◽  
Blood Cultures ◽  
Nutrient Broth

The inhibitory effect of sodium polyanethol sulfonate (0.05%) upon growth of Neisseria meningitidis was found to be neutralized by adding gelatin (l.1%) to the growth medium. The neutralizing effect was demonstrated in solid medium, as well as in nutrient broth for blood cultures. The findings parallel those of Wilkins and West (6) regarding gelatin neutralization of the inhibitory effect of sodium polyanethol sulfonate on Peptostreptococcus anaerobius.

scholarly journals Detection of Neisseria meningitidis from Negative Blood Cultures and Cerebrospinal Fluid with the FilmArray Blood Culture Identification Panel

2014 ◽  
Vol 52 (6) ◽  
pp. 2262-2264 ◽  
Author(s):  
J. Pardo ◽  
K. P. Klinker ◽  
S. J. Borgert ◽  
B. M. Butler ◽  
K. H. Rand ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Blood Culture ◽  
Neisseria Meningitidis ◽  
Blood Cultures ◽  
Culture Identification

Neisseria meningitidis Bacteremia in Children: Quantitation of Bacteremia and Spontaneous Clinical Recovery Without Antibiotic Therapy

PEDIATRICS ◽  
1987 ◽  
Vol 80 (1) ◽  
pp. 63-67 ◽  
Author(s):  
T. Dennis Sullivan ◽  
Leonard J. LaScolea
Keyword(s):  
Blood Culture ◽  
Antibiotic Therapy ◽  
Neisseria Meningitidis ◽  
Invasive Disease ◽  
Blood Cultures ◽  
Negative Blood Culture ◽  
Clinical Recovery ◽  
Oral Amoxicillin ◽  
Occult Bacteremia ◽  
The Relationship

The relationship between the magnitude of bacteremia due to Neisseria meningitidis and the clinical diagnosis was determined for 43 children who had fever in the presence or absence of focal signs of infection. Bacteremia was quantitated by the previously described procedure using heparinized blood (0.2 to 1.0 mL). Additionally, blood was cultured by means of the radiometric Bactec technique. Seventeen patients had meningitis, 12 had meningococcemia, 13 had unsuspected or "occult" bacteremia, and five had other diagnoses. "Occult" bactermia was diagnosed initially in four patients, but subsequently meningitis was diagnosed. All 13 patients with 500 or more organisms per milliliter had meningitis or meningococcemia in contrast to 12 (55%) of 22 patients with less than 500 organisms per milliliter (P ≤ .0035). Only 18 (42%) of these patients bacteremic with N meningitidis presented with petechiae or purpura. All 13 children with occult bacteremia were sent home after blood cultures were obtained; six of the 13 received a regimen of oral amoxicillin for otitis media. At reexamination (interval 16 to 119 hours) four had meningitis, seven were clinically improved (afebrile, negative blood culture, without invasive disease), and two were still mildly febrile with negative blood culture. Three of these bacteremic children experienced spontaneous clinical and bacteriologic resolution without antibiotic treatment. This has not been previously reported.

scholarly journals Evaluation of a hypertonic sucrose medium for the detection of fungi in blood cultures

1976 ◽  
Vol 4 (1) ◽  
pp. 110-111
Author(s):  
G D Roberts ◽  
C D Horstmeier ◽  
D M Ilstrup
Keyword(s):  
Blood Culture ◽  
Recovery Rate ◽  
Brain Heart Infusion ◽  
Blood Cultures ◽  
Sucrose Medium ◽  
Brain Heart Infusion Medium

A comparison was made between biphasic brain heart infusion medium without and with 15% sucrose in vented blood culture bottles. A higher recovery rate (P less than 0.01) of fungi was noted in the medium without sucrose.

scholarly journals Recovery of yeast from vented blood culture bottles

1975 ◽  
Vol 2 (1) ◽  
pp. 18-20
Author(s):  
G D Roberts ◽  
C Horstmeier ◽  
M Hall ◽  
J A Washington
Keyword(s):  
Blood Culture ◽  
Clinical Studies ◽  
Brain Heart Infusion ◽  
Blood Cultures ◽  
Time Interval ◽  
Time Intervals ◽  
The Mean ◽  
Mean Time ◽  
Brain Heart Infusion Medium

Rates of isolation of yeasts from blood cultures were significantly enhanced by venting vacuum blood culture bottles in studies of both stimulated and patients' blood cultures; however, the time interval to detection of positivity of yeasts in the clinical studies was significantly (P less than 0.01) shorter in a vented bottle with biphasic brain heart infusion medium than in a vented bottle with soybean-casein digest broth. The mean time intervals to detection of positivity were 2.6 days in the former and 5.2 days in the latter.

A single-bottle blood culture system: evaluation and comparison with two other systems

1977 ◽  
Vol 23 (8) ◽  
pp. 1041-1044 ◽  
Author(s):  
S. M. Hussain Qadri ◽  
R. D. Wende
Keyword(s):  
Blood Culture ◽  
Culture System ◽  
Culture Medium ◽  
District Hospital ◽  
Brain Heart Infusion ◽  
Blood Cultures ◽  
Harris County ◽  
Culture Bottle ◽  
Blood Culture System ◽  
Comparison Of The Results

A commercially available single-bottle blood culture system was evaluated at Ben Taub General Hospital, a Harris County District Hospital. Blood cultures from 1010 patients were examined with the Lederle Diagnostics one-bottle blood culture medium-SPS, Columbia broth (E-Vac, Pfizer), and an in-house-prepared brain heart infusion broth with p-aminobenzoic acid (PABA) and 0.1% agar. Of the 1010 patients examined, blood cultures from 211 (20.8%) were positive, yielding a total of 23 different species of microorganisms. Comparison of the results during clinical evaluation, as well as those from simulated blood cultures, showed that the Lederle Diagnostics blood culture bottle was as effective as the in-house-prepared brain heart infusion and commercially available Columbia broths for isolation of aerobes as well as anaerobes. The techniques used in the evaluation and the advantages of a single-bottle culture system are discussed.

scholarly journals Epidemiology of Blood Culture Utilization in a Cohort of Critically Ill Children

2019 ◽  
Vol 08 (03) ◽  
pp. 144-147
Author(s):  
Christine Anh-Thu Tran ◽  
Jenna Verena Zschaebitz ◽  
Michael Campbell Spaeder
Keyword(s):  
Decision Making ◽  
Blood Culture ◽  
Systemic Inflammatory Response Syndrome ◽  
Inflammatory Response ◽  
Critically Ill ◽  
Clinical Status ◽  
Blood Cultures ◽  
Systemic Inflammatory Response ◽  
Critically Ill Children ◽  
Culture Acquisition

AbstractBlood culture acquisition is integral in the assessment of patients with sepsis, though there exists a lack of clarity relating to clinical states that warrant acquisition. We investigated the clinical status of critically ill children in the timeframe proximate to acquisition of blood cultures. The associated rates of systemic inflammatory response syndrome (72%) and sepsis (57%) with blood culture acquisition were relatively low suggesting a potential overutilization of blood cultures. Efforts are needed to improve decision making at the time that acquisition of blood cultures is under consideration and promote percutaneous blood draws over indwelling lines.

scholarly journals 118. Eliminating Blood Culture Contamination with an Initial-specimen Diversion Device

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S187-S187
Author(s):  
Lucy S Tompkins ◽  
Alexandra Madison ◽  
Tammy Schaffner ◽  
Jenny Tran ◽  
Pablito Ang
Keyword(s):  
Health Care ◽  
Blood Culture ◽  
Nursing Staff ◽  
False Positive ◽  
Blood Cultures ◽  
Traditional Methods ◽  
Standard Methods ◽  
Candida Sp ◽  
Initial Specimen ◽  
Skin Flora

Abstract Background Blood samples obtained via traditional venipuncture can become contaminated by superficial and deeply embedded skin flora. We evaluated the hospital-wide use of an initial-specimen diversion device (ISDD) designed to shunt these microorganisms away from the culture bottle to reduce blood culture contamination (BCC) and sequelae: false-positive central line-associated bloodstream infections (CLABSIs), repeat blood culture draws, inappropriate antibiotic usage, increased patient length-of-stay and misdiagnosis. The study aimed to show the proportion of blood cultures containing contaminants drawn by phlebotomy staff using the ISDD versus those drawn using traditional methods. Nursing staff continued to use traditional methods to draw blood cultures in the emergency department (ED) and from inpatients. Methods Over a four-month trial at Stanford Health Care (SHC), 4,462 blood cultures were drawn by phlebotomy staff using the ISDD (Steripath Gen2, Magnolia Medical Technologies) in the ED and from inpatients; 922 blood cultures were obtained by phlebotomy staff using standard methods. Additionally, 1,413 blood cultures were drawn by nursing staff using standard methods. The number of matched sets (2 bottles [aerobic/anaerobic] plus 2 bottles [aerobic/anaerobic], with total volume 40 ml) obtained through traditional methods and by the ISDD were recorded. Contaminants were defined by the National Healthcare Safety Network (NHSN). In addition, sets in which 1 out of 4 bottles contained vancomycin-resistant Enterococcus (VRE) or Candida sp. were also recorded, even though these are not considered contaminants by the NHSN. Results Of 4,462 blood cultures obtained using the ISDD there were zero contaminants found (BCC rate 0%) versus 29 contaminated sets using traditional methods (BCC rate 3.15%). Twenty-eight contaminants were observed from nursing staff blood culture draws (BCC rate 1.98%). Zero false-positive CLABSIs were associated with use of the ISDD for the trial period. No matched sets containing 1 of 4 bottles with VRE or Candida sp. were observed. Table Stanford Health Care blood culture collection methods and contamination events (March 15, 2019 - July 21, 2019) Conclusion The trial results encourage adoption of the ISDD as standard practice for blood culture at SHC. Disclosures All Authors: No reported disclosures

Risk factors and clinical outcomes associated with blood culture contamination

2021 ◽  
pp. 1-7
Author(s):  
Justin M. Klucher ◽  
Kevin Davis ◽  
Mrinmayee Lakkad ◽  
Jacob T. Painter ◽  
Ryan K. Dare
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Blood Culture ◽  
Hospital Mortality ◽  
Clinical Outcomes ◽  
Tertiary Care ◽  
Blood Cultures ◽  
Hospital Charges ◽  
Patient Specific ◽  
Contaminated Blood

Abstract Objective: To determine patient-specific risk factors and clinical outcomes associated with contaminated blood cultures. Design: A single-center, retrospective case-control risk factor and clinical outcome analysis performed on inpatients with blood cultures collected in the emergency department, 2014–2018. Patients with contaminated blood cultures (cases) were compared to patients with negative blood cultures (controls). Setting: A 509-bed tertiary-care university hospital. Methods: Risk factors independently associated with blood-culture contamination were determined using multivariable logistic regression. The impacts of contamination on clinical outcomes were assessed using linear regression, logistic regression, and generalized linear model with γ log link. Results: Of 13,782 blood cultures, 1,504 (10.9%) true positives were excluded, leaving 1,012 (7.3%) cases and 11,266 (81.7%) controls. The following factors were independently associated with blood-culture contamination: increasing age (adjusted odds ratio [aOR], 1.01; 95% confidence interval [CI], 1.01–1.01), black race (aOR, 1.32; 95% CI, 1.15–1.51), increased body mass index (BMI; aOR, 1.01; 95% CI, 1.00–1.02), chronic obstructive pulmonary disease (aOR, 1.16; 95% CI, 1.02–1.33), paralysis (aOR 1.64; 95% CI, 1.26–2.14) and sepsis plus shock (aOR, 1.26; 95% CI, 1.07–1.49). After controlling for age, race, BMI, and sepsis, blood-culture contamination increased length of stay (LOS; β = 1.24 ± 0.24; P < .0001), length of antibiotic treatment (LOT; β = 1.01 ± 0.20; P < .001), hospital charges (β = 0.22 ± 0.03; P < .0001), acute kidney injury (AKI; aOR, 1.60; 95% CI, 1.40–1.83), echocardiogram orders (aOR, 1.51; 95% CI, 1.30–1.75) and in-hospital mortality (aOR, 1.69; 95% CI, 1.31–2.16). Conclusions: These unique risk factors identify high-risk individuals for blood-culture contamination. After controlling for confounders, contamination significantly increased LOS, LOT, hospital charges, AKI, echocardiograms, and in-hospital mortality.

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