Blood Culture Positive: Causes & Reasons

Possible Causes for Blood Culture Positive

Data from 20 patients with blood culture-negative IE and 20 with blood culture-positive IE were analyzed. [ncbi.nlm.nih.gov]

In patients with vegetations embolism was 25% when blood cultures were positive and 21% when they were negative. [ncbi.nlm.nih.gov]

culture–positive infective endocarditis 5.4.2 Blood culture–negative infective endocarditis 5.4.3 Histological diagnosis of infective endocarditis 5.4.4 Proposed strategy [escardio.org]

Right-Sided Bacterial Endocarditis

cultures positive for infectious organisms Blood cultures that are positive for microorganisms, which are taken 12 hours apart 3 blood cultures positive on separate occasions [dovemed.com]

culture–positive infective endocarditis 5.4.2 Blood culture–negative infective endocarditis 5.4.3 Histological diagnosis of infective endocarditis 5.4.4 Proposed strategy [escardio.org]

The Duke Criteria for the Clinical Diagnosis of Infectious Endocarditis Major criteria Positive blood culture Two separate blood cultures positive for microorganism consistent [aafp.org]

Acute Bacterial Endocarditis

culture–positive infective endocarditis 5.4.2 Blood culture–negative infective endocarditis 5.4.3 Histological diagnosis of infective endocarditis 5.4.4 Proposed strategy [escardio.org]

cultures from 2 separate blood cultures drawn > 12 hours apart, or 3 out of 4 blood cultures that are positive, with first and last samples drawn 1 hour apart Abnormal echocardiogram [medbullets.com]

Right-Sided Endocarditis

The Duke Criteria for the Clinical Diagnosis of Infectious Endocarditis Major criteria Positive blood culture Two separate blood cultures positive for microorganism consistent [aafp.org]

Subacute Bacterial Endocarditis

Major criteria 2 positive blood cultures for typical microorganisms causing endocarditis 3 positive blood cultures for microorganisms that are consistent with endocarditis [symptoma.com]

culture–positive infective endocarditis 5.4.2 Blood culture–negative infective endocarditis 5.4.3 Histological diagnosis of infective endocarditis 5.4.4 Proposed strategy [escardio.org]

Bacterial Endocarditis

Duke Criteria - Major Criteria ● Positive blood culture* ● Positive echocardiogram (vegetation, paravalvular abscess, or valve dehiscence after surgery). [pedclerk.bsd.uchicago.edu]

culture–positive infective endocarditis 5.4.2 Blood culture–negative infective endocarditis 5.4.3 Histological diagnosis of infective endocarditis 5.4.4 Proposed strategy [escardio.org]

In patients with vegetations embolism was 25% when blood cultures were positive and 21% when they were negative. [ncbi.nlm.nih.gov]

Prosthetic Valve Endocarditis

The diagnosis of infective endocarditis was unequivocal, as it blood cultures were positive for C. canimorsus and vegetations were detected on transesophageal echocardiography [ncbi.nlm.nih.gov]

Multiple subsequent blood cultures were positive for Candida albicans. [nejm.org]

Pneumococcal Pneumonia

We aimed to compare characteristics of patients with blood-culture-positive versus blood-culture-negative pneumococcal CAP, and to characterise bacteraemic serotypes.We describe [ncbi.nlm.nih.gov]

METHODS: Prospective observational study carried out in 278 hospitalized adult CAP patients with positive blood culture for Streptococcus pneumonia (2003-2015). [ncbi.nlm.nih.gov]

AIM: The occurrence of blood culture-positive pneumococcal bacteraemia and bacteraemic pneumonia decreased after large-scale pneumococcal vaccinations were introduced. [ncbi.nlm.nih.gov]

Candida Endocarditis

Multiple subsequent blood cultures were positive for Candida albicans. [nejm.org]

Unexplained, persistently positive blood cultures. [patient.info]

Blood cultures were positive for C. albicans. Antifungal therapy with liposomal amphotericin B was initiated but subsequent blood cultures remained positive. [revportcardiol.org]

Septic Arthritis of Pelvic Region

synovial fluid culture (45% positive) - blood culture is almost always negative How is non-gonococcal septic arthritis diagnosed? [quizlet.com]

cultures may be positive and should be obtained prior to starting antibiotics Treatment Nonoperative antibiotics targeted towards the specific organsim indications first [orthobullets.com]

+ve in 70-90 %) Blood Culture--- 50% Positive 10. [slideshare.net]

Gonococcemia

(Hematogenous Group); four had positive joint culture plus hematogenous manifestations (Transition Group); and 20 had positive joint culture without positive blood culture [pubfacts.com]

We also believe that this is the first reported patient who required mechanical ventilation under positive end-expiratory pressure. This patient made a full recovery. [ncbi.nlm.nih.gov]

If positive, blood cultures should be repeated until bacteremia is cleared. [neurologyadvisor.com]

Gonococcal Arthritis

cultures were positive in one case. [ncbi.nlm.nih.gov]

Therefore, we performed a joint aspiration (arthrocentesis), and synovial fluid was inoculated directly into aerobic and anaerobic blood culture bottles, which tested positive [ncbi.nlm.nih.gov]

In suppurative arthritis syndrome, synovial fluid cultures are positive in 45% to 55%, while blood cultures are generally negative. [pediatric-infectious-disease.imedpub.com]

Bacterial Arthritis

Positive cultures of the synovial fluid (71.4%) were far more frequent than positive blood cultures (23.5%). [ncbi.nlm.nih.gov]

cultures are positive in about 50% of cases • Treatment involves empiric abx (vancomycin if g+ cocci, 3rd gen cephalosporin if g-, then narrow), for at least 2 weeks (if [errolozdalga.com]

Blood cultures Positive in 50-70% of patients with nongonococcal bacterial arthritis Diagnostic if positive Limited usefulness but may be helpful when ruling out other diseases [arupconsult.com]

Brucellosis

KEYWORDS: Brucella agglutination titre; blood culture; brucellosis; hepatitis; transaminases [ncbi.nlm.nih.gov]

A diagnosis of acute brucellosis was considered due to positive serological tests and a blood culture positive for Brucella spp. [ncbi.nlm.nih.gov]

Agglutination test showed 98.5% positive with 34% blood culture positive of Brucella. [ncbi.nlm.nih.gov]

Haemophilus Influenzae Pneumonia

blood culture Positive upper respiratory culture does not necessarily establish organism as pathogen due to colonization Cellulitis Wound culture Consider CBC, depending [arupconsult.com]

Blood cultures were positive in six patients. [annals.org]

The diagnosis in 10/13 cases was made by positive blood cultures. Five of 13 patients received antibiotics prior to diagnosis. [nature.com]

Meningococcemia

The positive blood culture remains the diagnostic sine qua non. Treatment with ceftriaxone was rapidly successful in our patient. [ncbi.nlm.nih.gov]

Blood cultures were positive for Neisseria meningitidis, and the isolates were sensitive to both penicillin and ceftriaxone. [cmaj.ca]

Blood cultures were positive for group C Neisseria meningitidis. Histopathology of a skin biopsy specimen revealed leukocytoclastic vasculitis. [ncbi.nlm.nih.gov]

Staphylococcal Pneumonia

Sputum Gram-stain was positive for staphylococci in 69 per cent of cases and blood cultures were positive in 20 per cent. [ncbi.nlm.nih.gov]

In total 33 sets of blood cultures were collected from 31 patients. Blood cultures were positive for S. aureus in 36% (n=12). [nzma.org.nz]

Under these conditions, blood culture positivity tends to be higher, making blood culture an effective instrument in diagnosis. [scielo.br]

Acute Pyelonephritis

Among these, 46 (23.5%) had positive urine culture, 31 (15.8%) had positive blood culture and 15 (7.6%) had positive cultures of both urine and blood. [academic.oup.com]

Urine cultures were positive for Escherichia coli and blood cultures were negative. [ncbi.nlm.nih.gov]

Blood Culture indications (positive in up to 30% cases, obtain in severe infection or hospitalized patients) Immunocompromised patient Unclear diagnosis Hematogenous source [fpnotebook.com]

Gram-Negative Pneumonia

Of the children with CBM with both CSF and blood culture results, 24% were positive on both CSF and blood, 34% were positive only on CSF culture, and 16% were positive only [scielosp.org]

Blood culture collection before initial hospital antibiotics Pre-treatment blood cultures - positive results in 5-14% of patients hospitalized with CAP 32. [slideshare.net]

Fungus: Candida spp. mecA vanA/vanB blaKPC 1 h (after blood culture positivity, ~8–24 h) Nanosphere/Verigene® Microarray (detects 15 different Gram-positive targets and 14 [intechopen.com]

Spontaneous Bacterial Peritonitis

positive for C. albicans and blood culture negative, 1 had ascitic culture positive for A. niger and blood culture negative. [doi.org]

Ascites neutrophil count (4410/mm 3 versus 1046/mm 3, p CONCLUSIONS: Patients in the SBP group had a higher MELD score, ascites neutrophil count, and positive blood culture [ncbi.nlm.nih.gov]

cultures were positive for Campylobacter fetus. [ncbi.nlm.nih.gov]

Pseudomonas Pneumonia

Our diagnosis was based on quantitative cultures of broncho-alveolar lavage fluid (9 cases, two of them with concurrent positive blood cultures/positive cultures of the pleural [zora.uzh.ch]

The catheter tip culture grew more than 100 colonies of Pseudomonas aeruginosa. The blood cultures and sputum culture were also positive for Pseudomonas aeruginosa. [ispub.com]

Patients with blood cultures positive for P. aeruginosa were identified from the computerized database of the clinical microbiology unit. [bmcinfectdis.biomedcentral.com]

Ascending Cholangitis

[…] in chronic obstruction • Elevated transaminases in acute obstruction • Positive blood cultures in 50% of cases, typically with enteric gram-negative aerobes (e.g., E. coli [encyclopedia.lubopitko-bg.com]

Sun et al (2016) report that bile cultures are positive in 59-93% of cases, whereas the blood cultures only yield something in 21-71%. [derangedphysiology.com]

Blood culture is positive in 21% to 71% of cases of acute cholangitis[26]. The dose of the antibiotics should be adjusted according to renal and hepatic functions. [ncbi.nlm.nih.gov]

Pulmonary Anthrax

blood cultures, mediastinal adenopathy, or pleural effusion(s). [upmc-cbn.org]

[…] bacilli seen in blood cultures (if taken before antibiotic treatment), usually after 2-3 days of onset of illness. [gpnotebook.co.uk]

Intermediate-progressive stage Any one of the following findings is defined as inclusion criteria for this stage: Positive blood cultures, or Mediastinal adenopathy, or Pleural [upmc-cbn.org]

Typhoid Fever

Combinations of peripheral blood culture, bone marrow culture, and blood PCR positivity have been used to indicate a true positive result (enteric fever case). [cochranelibrary.com]

Blood cultures are usually positive only during the first 2 weeks of illness, but stool cultures are usually positive during the 3rd to 5th weeks. [msdmanuals.com]

In Grade 2 studies, we considered either blood culture or blood PCR positivity a positive composite reference standard. [cochranelibrary.com]

Bartonella Infection

in the case of Patient 7, 2 of 7 blood cultures were positive over a five-week period; in that of Patient 8, 4 of 7 blood cultures were positive over a five-week period; [doi.org]

[…] also had positive blood cultures for B. bacilliformis. [doi.org]

In that study, homeless people with blood cultures positive for B. quintana were randomized to receive either no treatment (untreated controls) or a combination of gentamicin [doi.org]

Listeriosis

CSF and blood cultures were positive for Listeria monocytogenes. [ncbi.nlm.nih.gov]

One of 25 stool cultures was positive. The 2 blood isolates and 1 stool isolate were serotype 4b and identical by enzyme typing. [ncbi.nlm.nih.gov]

Blood-culture positive patients and those receiving adjunctive dexamethasone had higher neurolisteriosis mortality. [32] Age Listeria infections occur most often in newborns [emedicine.com]

Orbital Cellulitis

Sometimes the doctor may check for bacteria by taking blood samples. Positive blood cultures mean that bacteria from the skin infection have spread into the bloodstream. [kidshealth.org]

Both blood culture and pus that was drained from the orbital abscess were positive for methicillin-resistant Staphylococcus aureus (MRSA), which was found to be a strain indigenous [ncbi.nlm.nih.gov]

Blood cultures were obtained in 59 cases; only 6 were positive. Five cultures grew Streptococcus species. [scienceopen.com]

Acute Peritonitis

RESULTS: Positive blood and MLN cultures were not obtained in controls. [ncbi.nlm.nih.gov]

The laboratory findings following suspicion of primary peritonitis may show mild elevation of the white blood cell (WBC) count and a positive culture of the peritoneal dialysate [uspharmacist.com]

Mesenteric lymph nodes (MLNs) were excised for culturing and immunohistochemistry using antibodies CD4, CD8 and CD68. [ncbi.nlm.nih.gov]

Mycobacterium Avium Complex

blood culture. [cdc.gov]

Blood cultures were positive for Mycobacterium avium-intracellulare complex (MAC) that was resistant to clarithromycin therapy. [pubs.rsna.org]

Diagnosis of MAC Disseminated MAC is most readily diagnosed by one positive blood culture (6). [cdc.gov]

Bacterial Pneumonia

Escherichia coli was the pathogen responsible for post-biopsy infections occurring in a; 11 (100%) patients with positive blood cultures, which confirmed ciprofloxacin-resistant [dbpia.co.kr]

'Any bacterial infection' was defined as a positive urine pneumococcal antigen test, isolation of a bacterial pneumonia pathogen from blood culture, or detection of an atypical [ncbi.nlm.nih.gov]

There are a number of problems with blood cultures in CAP: they are only positive in 7% of cases, up to 6% of blood cultures drawn will yield contaminants, and even with positive [clinicaladvisor.com]