Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Thirty-two infants and children ranging in age from 3 to 151 months (mean, 26 months) were treated with parenteral cefoxitin (150 mg/kg per day). Ten patients with isolates of Haemophilus influenzae (six with cellulitis, two with arthritis, and two with mastoiditis), four with Staphylococcus aureus (one with lymphadenitis, one with septicemia, and two with abscess), and three patients with Streptococcus pneumoniae (one each with cellulitis, abscess, and arthritis), were clinically and bacteriologically cured by therapy. Two additional patients with septic arthritis and facial cellulitis developed meningitis with H. influenzae type b and S. pneumoniae, respectively. Minimal inhibitory and bactericidal concentrations were </=5 mug/ml for 15 isolates. Minimal bactericidal concentrations were >20 mug/ml for one strain of S. aureus and one of H. influenzae type b. The mean peak serum levels were 81.9 and 68.5 mug/ml 15 min after intravenous or intramuscular doses, respectively. The mean elimination half-lives were 42.4 and 40.1 min after intravenous or intramuscular doses, respectively. The mean volumes of distribution were 5,540 and 4,760 ml after intravenous and intramuscular doses, respectively. Mean plasma clearance was 242 and 257 ml/min per m(2) after intravenous and intramuscular doses, respectively. Therapy was discontinued in one patient because of neutropenia, which resolved after cefoxitin was stopped. Eosinophilia and transiently elevated liver function tests occurred in eight and six patients, respectively. These data indicate that cefoxitin may be an effective treatment for infections due to susceptible bacteria in the dosage tested, but its use may be limited because of the occurrence of meningitis during therapy in some patients.
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PMID:Clinical and pharmacokinetic evaluation of parental cefoxitin in infants and children. 739 56

The full spectrum of invasive Haemophilus influenzae disease has not been documented previously in Africa. This 1-year prospective study was designed to determine the epidemiology of invasive Haemophilus influenzae disease in Cape Town children. During this period, 142 children with invasive disease were hospitalized; 85 (59.9%) presented with meningitis, 35 (24.6%) with pneumonia and 22 (15.5%) with other diseases. No cases of epiglottitis were seen. Sixty per cent of cases were male and 40% female. The median age of the children was 9 months, with a range of 1-144 months, and 65.5% were aged < 12 months. Neurological dysfunction was noted in 40% and 18% of children with meningitis on admission and discharge, respectively. The overall case fatality rate (95% confidence intervals) was 9.2% (4.9-15.7), and for meningitis, pneumonia and septicaemia it was 4.7% (1.2-16.4), 14.3% (4.6-31.8) and 40% (8-78.1), respectively. Serotype b accounted for 86.5% of all cases, 97.3% of cases of meningitis, 71.4% of cases of pneumonia, 50% of cases of septicaemia, all cases of arthritis and cellulitis and none of mastoiditis. The incidence rates (95% confidence intervals) for all invasive type b infections were 169 (122-198) and 47 (39-57) per 100,000 population for children < 1 and < 5 years, respectively. For meningitis the rates were 112 (84-148) and 34 (25-40) per 100,000, respectively. Rates for mixed race and white children were similar, but those for black children were more than double those rates.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Epidemiology of invasive Haemophilus influenzae infections in Cape Town, South Africa. 752 37

We recently saw two unusual manifestations of Haemophilus influenzae infection in adults in the Seattle area: fulminant sepsis in an otherwise-healthy man and three episodes of bacteremia in a woman with chronic liver disease. We retrospectively identified 79 bacteremic and 40 non-bacteremic cases of invasive H. influenzae infection developing in patients > or = 9 years of age between 1 January 1980 and 31 December 1990. The most common clinical presentations among patients with bacteremia included pneumonia (52%), septicemia (27%), meningitis (8%), gynecologic infection (5%), and epiglottitis (5%). Underlying illnesses were common in these patients, and overall mortality was 35.5%. Factors associated with mortality included underlying neurological disease, polymicrobial bacteremia, and advanced age. The clinical presentations of the 40 patients without bacteremia included soft-tissue abscesses (45%), lung abscesses (18%), peritonitis (13%), meningitis (8%), gynecologic infection (8%), epididymitis (5%), mastoiditis (3%), and osteomyelitis (3%). Thus H. influenzae disease has a variety of presentations and is associated with significant mortality in older children and adults. Further study is required to determine whether widespread administration of H. influenzae type b conjugate vaccine to infants will alter the development of subsequent disease in later life.
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PMID:Invasive Haemophilus influenzae infections in older children and adults in Seattle. 821 79

The protective ability of a conjugated Haemophilus influenzae type b vaccine, ACT-HIB, used singly or in combination with orally administered Escherichia coli, was investigated in a rat model for acute otitis media. The humoral response to ACT-HIB was also analyzed. The study demonstrated that ACT-HIB vaccination resulted in a prompt antibody response, and that ACT-HIB was efficient in preventing middle ear infections caused by Haemophilus influenzae type b. The efficiency increased if the vaccine was combined with Escherichia coli. The results suggest that Escherichia coli could possibly be useful in the future as a vaccine vehicle, and since Haemophilus influenzae acute mastoiditis seems to be almost exclusively due to serotype b, the incidence of this infection may be reduced with the conjugated Haemophilus influenzae type b vaccines.
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PMID:Effect of Haemophilus influenzae type b conjugate vaccine in combination with peroral immunization with Escherichia coli on experimental otitis media. 880 86

Although mastoiditis can be a life threatening disease, clinicians often overlook it because it is uncommon. We reviewed the presentation and management of all children younger than 15 years of age with the discharge diagnosis of mastoiditis in our hospital from January 1994 through December 1999. Nineteen patients that fulfilled the case definition were included. The most common clinical presentation in this series was fever. More specific findings, such as otorrhea, postauricular pain, swelling, and redness of mastoid could be found in less than half of these patients. Only two patients had characteristic physical findings, and mastoiditis was diagnosed in only three patients upon admission. Plain radiographic evidence of mastoiditis was usually not apparent early in the course. In this series, the majority of patients were diagnosed by computed tomography (CT) scans. The present study demonstrates that mastoiditis most commonly presents without a clearly diagnostic set of physical examination and laboratory findings. Mastoiditis should be considered in patients with otitis media or with fever of unknown origin (FUO). The empirical antibiotic treatment should cover organisms commonly found in acute otitis media (AOM), including Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis.
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PMID:Mastoiditis: a disease often overlooked by pediatricians. 1126 68

Acute otitis media (AOM) is the most common disease for which pediatricians prescribe antimicrobial agents. Middle ear fluid were collected from 243 children with AOM that failed to respond to a previous course of antimicrobial therapy and who had then received myringotomy from September 1997 through August 1999. Bacterial cultures were done and antimicrobial susceptibilities were analyzed. Streptococcus pneumoniae (21.8%) was the most common causative organism, followed by Haemophilus influenzae (10.2%), Staphylococcus aureus (7%), and Pseudomonas aeruginosa (1.8%), while Moraxella catarrhalis (0.7%) and group A beta-hemolytic streptococcus (0.2%) were rarely isolated. In patients whose condition failed to improve after a course of antibiotic treatment, drug resistance became a serious problem. Fourteen percent of the patients in this series had complications, which included recurrent AOM, persistent middle ear effusion necessitating ventilation tube insertion, hearing impairment, mastoiditis, meningitis, chronic otitis media, brain abscess, and sepsis. Possible risk factors such as young age, male sex, underlying diseases, and a culture of S. pneumoniae or H. influenzae were not significantly associated with an increased incidence of complications. More stringent diagnosis and the correct choice of antibiotic treatment combined with the introduction of potential virus and bacterial vaccines are promising ways to reduce the morbidity of AOM in children.
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PMID:Pathogens in the middle ear effusion of children with persistent otitis media: implications of drug resistance and complications. 1160 10

Treatment of acute otitis media (AOM) is the leading cause of antibacterial use in children in most developed countries. Rates of Streptococcus pneumoniae strains resistant to many classes of antibacterial agents have risen dramatically in many countries over the past 20 years. While more restricted use of antibacterial agents for AOM would almost certainly slow the rise in resistance, AOM is a potentially painful disease and may have suppurative complications such as mastoiditis. In this review, we discuss the prudent use of antibacterial agents for AOM and provide an overview of the epidemiology of S. pneumoniae resistance worldwide. Data from 10 placebo-controlled studies in patients with AOM show that antibacterial treatment is generally associated with a significantly higher cure rate than placebo. Of the three studies which analysed children <2 years of age, cure rates were 28 to 48% for placebo and 41 to 74% with antibacterial agents. Of the studies purporting to show no difference in cure rates between placebo and antibacterial therapy, the diagnostic criteria defining entry into the study were poor; therefore, the studies may have included many children without bacterial disease. Accurate diagnosis of AOM is the key element in reducing unnecessary antibacterial usage. Either pneumatic otoscopy or tympanometry can provide evidence of an effusion and the presence of an opaque, yellow or creamy white bulging eardrum will confirm AOM. Finally, the selection of appropriate antibacterial agents will reduce the rise in resistance. Low dosages of antibacterial agents used for prophylaxis select for resistance, and certain classes of drugs such as the sulfonamides and macrolides appear to do the same even at therapeutic doses. Amoxicillin at high dosages should remain the first-line antibacterial agent. In the future, use of vaccination strategies against pneumococci, influenza, respiratory syncytial virus and non-typeable Haemophilus influenzae will also decrease antibacterial use.
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PMID:The role of antibacterial therapy of acute otitis media in promoting drug resistance. 1168 95

The pathogenesis of acute otitis media is complex and multifactorial. Bacteria infecting the middle ear come from the nasopharynx via the eustachian tube. This colonization is facilitated by bacterial adherence on the pharyngeal and the eustachian tube cells. Otitis media is characterized by inflammation of the middle ear with an infiltration of the subperiosteal space by leukocytes, macrophages and mast cells. The effusion contains great amounts of inflammatory mediators (eicosanoids, cytokines, histamine). Elimination of the effusion and/or the bacteria is based on non-specific factors such as mucociliary clearance and phagocytosis, and on a specific immune response which apparently is not the same for Haemophilus influenzae and for Streptococcus pneumoniae. The main complications of acute otitis media are otitis media with effusion, mastoiditis, sensorineural hearing loss and meningitis.
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PMID:New views on the pathogenesis of acute otitis media and its complications. 1186 22

We present a retrospective study of 37 infants who were operated for acute mastoiditis during the period 2000-2004 in Mother and Child Health Care Institute, Belgrade, Serbia and Montenegro. About 23 patients (62.2%) were male and 14 (37.8%) were female. Acute mastoiditis developed just after the first infection of the middle ear in 26 patients (70.3%). All patients had local and general symptoms. The most common local symptoms were blurred tympanic membrane in all patients, painful tenderness of mastoid in 21 (57%) and redness of tympanic membrane in 13 (36%). General signs of infection were loss of body weight in 28 (75.7%) patients, fever in 21 (56.8%), vomiting in 19 (51.3%), diarrhea in 19 (51.3%) and severe anemia that requested red blood cell transfusion in 6 (16.2%). Suppuration did not appear in any of the patients. Tympanocentesis had been performed prior to surgery in all patients. The most frequently isolated causative microorganism was Streptococcus pneumoniae which was found in 12 (32.5%) patients, Staphylococcus aureus was found in 8 (21.5%) and Hemophilus influenzae in 2 (5.5%). In 15 (405%) patients there was no bacterial isolation. Eleven patients (29.7%) who had previously had acute otitis media were implanted ventilation tubes during the surgical intervention. All patients were treated with antibiotics prior and after the surgical intervention. The finding on mastoidectomy was positive in all cases. According to the results of our study the combination of antibiotic and surgical treatment is optimal in treating acute mastoiditis. Making a diagnosis of acute mastoiditis might not be easy since there are no specific symptoms. We emphasize that it should always be considered as a differential diagnosis in cases of prolonged acute otitis media with no improvement after 10 days of antibiotic treatment, especially when accompanied with weight loss and general condition worsening.
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PMID:Acute mastoiditis in infants. 1679 12

The French Group of Pediatric Infectious Diseases (PID) of the French Society of Pediatrics found necessary to issue in 2011 therapeutic proposals concerning antibiotic treatment in severe ENT infections in children (acute mastoiditis, severe sinusitis, peripharyngeal abscess). They took into account, for each clinical situation, published studies and existing guidelines, the most frequently encountered bacterial species, their usual sensitivity to antibiotics, their pharmacokinetic and pharmacodynamic (PK-PD) characteristics. These propositions aim to ensure the proper use of antibiotics and to limit the development of bacterial resistance to antibiotics by minimizing the use of broadspectrum molecules, especially cephalosporins and penems. These infections are often multi microbial and respond to aerobic flora similar to that found in non severe community acquired ENT infections and soft tissue infections ( Streptococcus pyogenes or group A Streptococcus(GAS), Streptococcus pneumoniae, Staphylococcus aureus and Haemophilus influenzae). Anaerobic flora may be associated and implicated in some situations. In most cases, high-dosage of amoxicillin +/- clavulanic acid offers the best PK/PD profile and allows to avoid the overuse of injectable third-generation cephalosporins.
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PMID:[Antibiotherapy of severe ENT infections in children: propositions of the French Group of Pediatric Infectious Diseases (PID) of the French Society of Pediatrics]. 2436 Feb 97


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