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Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The aetiology of community-acquired pneumonia was studied by use of new bacterial and established viral serological methods besides blood culture in 162 patients. Evidence for a specific aetiology was obtained in 79 patients (49.4%). The pneumococcus was the most common aetiological agent, identified in 25.6% of cases. Other bacteria, Haemophilus influenzae, Branhamella catarrhalis, Neisseria meningitidis and Chlamydia spp. were demonstrated in 23.5%, Mycoplasma pneumonia in 1.2% and viruses in 7.4% patients. In 58% those with viral pneumonia there was evidence of mixed infection with bacteria. The predictive value of rapid laboratory tests, erythrocyte sedimentation rate, white blood cell count and C-reactive protein (CRP), was evaluated in relation to the aetiological diagnosis. They all differentiated viral from bacterial pneumonia, with CRP having the best predictive value. On the basis of these tests, most cases in which our serological tests remained negative would appear to have a bacterial aetiology also.
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PMID:The aetiology of pneumonia. Application of bacterial serology and basic laboratory methods. 381 55

Samples of cerebrospinal fluid from 112 cases of suspected meningitis were tested for the presence of C-reactive protein (CRP), using a qualitative and quantitative slide test. Bacterial meningitis was confirmed in 34 patients, based on CSF and blood culture results, and/or elevated CSF white blood cell (WBC) count and typical biochemical profile. There were 8 patients with early onset, and 3 who had received prior antimicrobial therapy among the 5 neonates, 23 children, and 6 adults with bacterial meningitis. Organisms recovered from CSF, and/or blood, included Haemophilus influenzae 14, Streptococcus pneumoniae 9, Streptococcus group B-5, Staphylococcus aureus 2, E. coli 2 and Klebsiella pneumoniae 1. Slide test was positive for CRP in 33 cases, giving a sensitivity of 97% which compared favourably with elevated CSF protein 33%, decreased CFS glucose 64.7% CSF glucose/blood glucose less than 1/2, 85%, raised CSF WBC 38.2%, raised CSF PMN 61.7%, CSF culture positive 88.2%, and CSF gram-positive 82.5%. Slide test was positive for CRP in 1 of 78 CSF samples negative for bacterial meningitis, giving a specificity of 98%. It was concluded that testing of CSF for CRP is a simple, rapid and accurate method for the laboratory diagnosis of bacterial meningitis, which is particularly appropriate for areas lacking adequate laboratory facilities.
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PMID:Cerebrospinal fluid C-reactive protein in the laboratory diagnosis of bacterial meningitis. 389 17

Microorganisms encountered in cerebrospinal fluid require rapid and accurate means of detection and identification in the laboratory. Although restricted to morphologic study and Gram reaction, the Gram stain of cerebrospinal fluid has been the primary diagnostic tool for preliminary diagnosis of purulent meningitis, with identification of the etiologic agent often made within one to two hours by direct microscopic examination. Gram stain and appropriate culture procedures still provide the basis for comparing other diagnostic methods. Nonimmunologic methods that show promise in being both rapid and reliable include gas-liquid chromatography and the Limulus amebocyte lysate test. Fatty acid and carbohydrate profiles characteristic of Haemophilus influenzae, Streptococcus pneumoniae, Neisseria meningitidis, and Staphylococcus aureus in the cerebrospinal fluid of human subjects and animals have been obtained by gas-liquid chromatography. Also, a unique compound has been detected by gas-liquid chromatography in cerebrospinal fluid from patients with tuberculous meningitis. The Limulus test has been reliable in spinal fluid and almost always gives positive results in H. influenzae and other Gram-negative meningitides. Nonspecific test procedures of varying degrees of accuracy and promise include lactic acid, C-reactive protein, and lactate dehydrogenase determination. Direct microscopic examination of cerebrospinal fluid remains the most practical and accurate method for identifying the etiologic basis of bacterial (and fungal) meningitis.
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PMID:Rapid and reliable techniques for the laboratory detection of bacterial meningitis. 634 38

Seventy-eight patients, all over 10 years of age, with clinical signs of acute otitis media, received either phenoxymethyl penicillin or erythromycin stearate, in a randomized manner, and the clinical, bacteriological and immunological effects were studied. Haemophilus influenzae and Streptococcus pneumoniae were the major pathogens isolated from the nasopharynx in 30 and 28 patients, respectively. Increased levels of C-reactive protein (CRP) were detected in 53 (68%) of the patients. There was no statistical difference in the CRP-levels depending on species of bacteria isolated. The highest incidence was observed in cases with Branhamella catarrhalis and H. influenzae. Persistence of H. influenzae during antibiotic therapy was demonstrated in 70% and after therapy in 63% compared to 4% and 11% persistence of S. pneumoniae. The type of antibiotic treatment did not influence persistence. An immune response to H. influenzae and S. pneumoniae was detected significantly more often in patients treated with erythromycin stearate than with phenoxymethyl penicillin.
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PMID:Acute otitis media in older children and adults treated with phenoxymethyl penicillin or erythromycin stearate. Bacteriological and immunological aspects. 641 18

White blood cell count (WBC), erythrocyte sedimentation rate (ESR) and serum C-reactive protein (CRP) were determined upon diagnosis of 61 children with bacterial meningitis in order to compare the responses evoked by different bacteria. The age of the patients and the duration of their symptoms were similar in all groups. WBC and ESR corresponded significantly with the bacterial species. The mean WBC in Haemophilus influenzae (n = 44), meningococcal (n = 11) and pneumococcal (n = 6) infection were 14,605/microliters 19,391/microliters and 23,833/microliters, respectively (for H. influenzae and pneumococci p less than 0.001). The mean ESR varied from 58 mm/h (meningococci) to 100 mm/h (pneumococci) (p less than 0.025). CRP was the test least influenced by the nature of the bacteria. The characteristics of CRP suggest its superiority over WBC and ESR as a detector of bacteremic infections. WBC is unsuitable for screening of systemic H. influenzae disease.
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PMID:White blood cell count, erythrocyte sedimentation rate and serum C-reactive protein in meningitis: magnitude of the response related to bacterial species. 651 Oct 86

A total of 813 patients from the years 1976 to 1980 who had a bacteremic Haemophilus influenzae infection were analyzed. Special attention was paid to disease entities (16.5% of the total) other than meningitis (60.5%) or epiglottitis (23.0%). Ninety-six cases in the nonmeningitis, nonepiglottitis (NMNE) group showed the following distribution: 25 patients with septicemia without specific focus, 21 arthritis, 19 cellulitis, 17 pneumonia, six otitis, four local abscess, two laryngotracheobronchitis, and two with an eye infection. Eighty-eight percent of the cases were children who were less than 5 years old; in the septicemia and pneumonia groups, however, 33 percent were 15 years of age and older, and 10 percent were over 60 years of age. All diseases in the NMNE group were acute; 51 percent of the patients sought medical advice within two days. C-reactive protein (CRP) was elevated constantly at presentation, erythrocyte sedimentation rate (ESR) was increased (greater than 20 mm/hr) in 87 percent, high fever greater than 38.5 degrees C (101.3 degrees F) was measured in 85 percent, and leukocytosis (greater than 15 X 10(9)/l) was present in 71 percent. Various antimicrobial agents were given for an average of 17 days. The mean period of hospitalization was 13 days. Case fatality rate was 4 percent; all deaths occurred among patients with an underlying disease. No permanent damage was observed.
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PMID:Systemic Haemophilus influenzae infection in Finland. 670 35

Fever is one of the most frequent signs seen in children at consultation. In infants under the age of 3 months, fever is nonspecific and is often the only sign of a potentially severe infection. It has been estimated that two-thirds of the children hospitalized have a viral infection and 10% a bacterial infection with risks of complications including meningitis. It must be recalled that 5% of the infants with septicaemia due to Haemophilus influenzae b who does not receive an appropriate treatment will develop meningitis or another focal infection. There is agreement on the definition of potentially severe infections: meningitis, osteoarthritis, cellulitis or cellulodermitis, urinary infection, lung infection and gastroenteritis. Certain authors also include inner ear infections. In suspected cases, the need for hospitalization can be based on signs of impaired consciousness and/or muscle tone, abnormal heart rate, blood pressure or recoloration time, paleness, cyanosis, respiratory distress, signs of dehydration, or abnormal behaviour. In order to identify infants at low risk, in addition to the physical examination, the clinician can rely on essential laboratory tests: white cell count with differential count, blood culture, C-reactive protein and/or sedimentation rate with fibrinogen and an urinanalysis. A chest X-ray is required in case of respiratory signs and a culture of the fecal matter is needed in case of diarrhoea. On the basis of these findings and the clinical picture, if the criteria of low risk of bacterial infection are fulfilled in an infant under 3 months of age with fever, most authors agree that a spinal tap must nevertheless be performed. When these tests lead to the conclusion of low risk, close surveillance at home is appropriate. If the clinical picture worsens within 24h hospitalization is required.
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PMID:[Fever in infants under the age of three months without sign of focal infection. Criteria of therapeutic decision]. 807 34

C-reactive protein (CRP) is a general marker of the systemic inflammatory response to bacterial infection. Serial measurement of CRP is useful in monitoring respiratory exacerbations in patients with cystic fibrosis (CF) and chronic infection with Pseudomonas aeruginosa. We hypothesized that regular monitoring of CRP in young children with CF prior to colonization with P. aeruginosa might provide an objective guide to the need for antibiotic treatment. Twenty-two children were studied prospectively over a 6 month period. We measured CRP every 2 months and at the beginning and end of respiratory exacerbations. In samples taken when the children were well, median CRP was 0.45 microgram/mL compared with 1.92 micrograms/mL when they were symptomatic with positive culture results (P < 0.05). Despite this difference there was considerable overlap between CRP levels for infected and noninfected patients. A CRP value of > 1.82 micrograms/mL (the upper 95% confidence interval for a control group of well children without CF) had a sensitivity of 49% and a specificity of 83% in determining a symptomatic exacerbation. We conclude that in this group of patients CRP measurements were of little value in monitoring respiratory exacerbations in patients who become intermittently infected with either Haemophilus influenzae or Staphylococcus aureus.
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PMID:C-reactive protein is not a useful indicator of intermittent bacterial colonization in early lung disease of patients with cystic fibrosis. 810 78

Viral and bacterial antigen and antibody assays were prospectively applied to study the microbial aetiology of community-acquired pneumonia in 195 hospitalised children during a surveillance period of 12 months. A viral infection alone was indicated in 37 (19%), a bacterial infection alone in 30 (15%) and a mixed viral-bacterial infection in 32 (16%) patients. Thus, 46% of the 69 patients with viral infection and 52% of the 62 patients with bacterial infection had a mixed viral and bacterial aetiology. Respiratory syncytial virus (RSV) was identified in 52 patients and Streptococcus pneumoniae in 41 patients. The next common agents in order were non-classified Haemophilus influenzae (17 cases), adenoviruses (10 cases) and Chlamydia species (8 cases). The diagnosis of an RSV infection was based on detecting viral antigen in nasopharyngeal secretions in 79% of the cases. Pneumococcal infections were in most cases identified by antibody assays; in 39% they were indicated by demonstrating pneumococcal antigen in acute phase serum. An alveolar infiltrate was present in 53 (27%) and an interstitial infiltrate in 108 (55%) of the 195 patients. The remaining 34 patients had probable pneumonia. C-reactive protein (CRP), erythrocyte sedimentation rate and total white blood cell count were elevated in 25%, 40% and 36% of the patients, respectively. CRP was more often elevated in patients with bacterial infection alone than in those with viral or mixed viral-bacterial infections. No other correlation was seen between the radiological or laboratory findings and serologically identified viral, bacterial or mixed viral-bacterial infections.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Aetiology of community-acquired pneumonia in children treated in hospital. 912 28

The aim of the present study was to evaluate whether the results of such simple hematologic tests as erythrocyte sedimentation rate (ESR), white blood cell count (WBC) and C-reactive protein (CRP) could give any useful information about the causative agents in 176 patients with acute maxillary sinusitis (AMS). The great majority of tests (82%) showed values which were within normal limits. This may be due to the fact that 22% of AMS cases were culture negative for bacteria and about 60% of culture positive cases had Haemophilus influenzae as the etiologic agent. Significantly raised test values were seen in connection with Streptococcus pyogenes in the majority of cases, less frequently with Streptococcus pneumoniae and rarely with Haemophilus influenzae. We conclude that none of the evaluated routine blood tests are particularly sensitive indicators of the specific etiology of AMS in general. However, elevated CRP values (> 40 mg/l) associated with AMS should alert the physician to the suspicion of Streptococcus pyogenes or Streptococcus pneumoniae in etiology, since both, if left untreated, may lead to sinus empyema. With CRP or other evaluated tests Haemophilus influenzae- or Branhamella catarrhalis-positive AMS cannot be distinguished from a purely viral disease.
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PMID:Do simple laboratory tests help in etiologic diagnosis in acute maxillary sinusitis? 928 95


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