Respiratory Tract Infections :: diagnosis
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Characteristics of the microbial landscape of upper respiratory passage mucosa are presented with special reference to purulent-septic disease of ENT organs. It is shown that acute purulent sinusitis is most frequently associated with the presence of aerobic and facultative anaerobic microorganisms (81%). The main pathogenic agents responsible for the development of acute purulent otitis media are Streptococci (35%), Staphylococci (33%), and Pneumococci (9%). Streptococci and Staphylococci usually occur in patients with paratonsillitis (48-73%).
Most cited papers:
Mesh-terms: Antibody Formation; Bronchiolitis, Viral :: epidemiology; Bronchiolitis, Viral :: microbiology; Child; Child, Preschool; Complement Fixation Tests; District of Columbia; Human; Infant; Orthomyxoviridae Infections :: diagnosis; Orthomyxoviridae Infections :: epidemiology; Orthomyxoviridae Infections :: immunology; Orthomyxoviridae Infections :: microbiology; Pneumonia, Viral :: epidemiology; Pneumonia, Viral :: microbiology; Respiratory Syncytial Viruses :: immunology; Respiratory Syncytial Viruses :: isolation & purification; Respiratory Syncytial Viruses :: pathogenicity; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: epidemiology; Respiratory Tract Infections :: microbiology; Seasons;
A total of 133 patients with cystic fibrosis have been followed for up to 5 years with monthly examinations including bacteriological examinations of sputum. Sera from the patients were examined by means of crossed immunoelectrophoresis for the occurence and number of precipitating antibody specificites against Pseudomonas aeruginosa. Poor prognosis in cystic fibrosis was associated with chronic colonization (9 months - more than 5 years) of the respiratory tract with mucoid Pseudomonas aeruginosa, and with an onset of the chronic colonization before puberty. Among the patients with chronic Pseudomonas aeruginosa colonization, poor prognosis was associated with high numbers of precipitins against antigens from these bacteria (up to 61). The number of Pseudomonas aeruginosa precipitins increased on an average with five per year in chronically colonized patients. Rapidly increasing number of precipitins was associated with poor prognosis. Patients with any degree of impairment of the ventilatory function and any changes on the chest radiographs could contract chronic Pseudomonas aeruginosa colonization. Poor ventilatory function and severe changes on the chest radiographs was associated with high numbers of Pseudomonas aeruginosa precipitins and with poor prognosis. Although many O groups of Pseudomonas aeruginosa were found in the chronically colonized group of patients, 53% of the patients harboured strains belonging to O group 3 or 3/9, and the highest numbers of precipitins were found in serum from these patients.
Mesh-terms: Antibodies, Bacterial :: analysis; Chronic Disease; Cystic Fibrosis :: complications; Cystic Fibrosis :: mortality; Female; Follow-Up Studies; Humans; Immunoelectrophoresis, Two-Dimensional; Male; Precipitin Tests; Prognosis; Pseudomonas Infections :: complications; Pseudomonas Infections :: diagnosis; Pseudomonas aeruginosa :: immunology; Respiratory Function Tests; Respiratory Tract Infections :: complications; Respiratory Tract Infections :: diagnosis; Sputum :: microbiology;
Department of Epidemiology, University of Washington, Seattle 98195.
This article reviews current knowledge of Chlamydia pneumoniae strain TWAR, a newly recognized Chlamydia organism that causes acute respiratory infection, especially atypical pneumonia. Information is included on the microbiology, classification and laboratory diagnosis of the organism. Details of a series of studies of both endemic and epidemic respiratory infections are reviewed to present information on both the clinical and epidemiological characteristics of infection with strain TWAR. Laboratory studies of antibiotic sensitivity and recommendations for treatment are presented.
Mesh-terms: Adult; Child, Preschool; Chlamydia :: classification; Chlamydia :: immunology; Chlamydia Infections :: diagnosis; Chlamydia Infections :: epidemiology; Chlamydia Infections :: microbiology; Chlamydia trachomatis :: classification; Chlamydia trachomatis :: immunology; Disease Outbreaks; Drug Resistance, Microbial; Human; Microscopy, Electron; Middle Aged; Pneumonia :: diagnosis; Pneumonia :: epidemiology; Pneumonia :: microbiology; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: epidemiology; Respiratory Tract Infections :: microbiology; Retrospective Studies; Scandinavia; Support, U.S. Gov't, P.H.S. ;
Swiss National Center for Mycobacteria, Department of Medical Microbiology, University of Zurich.
A total of 938 respiratory specimens (633 sputa, 249 bronchial and tracheal aspirates, and 56 bronchoalveolar lavages) from 589 patients were tested for direct detection of Mycobacterium tuberculosis complex by the Gen-Probe amplified Mycobacterium tuberculosis direct test (MTD), and the results were compared with those of the conventional methods of fluorescence microscopy and cultivation (solid and radiometric media). One series of specimens (n = 515) was decontaminated with N-acetyl-L-cysteine (NALC)-NaOH: the other one (n = 423) was decontaminated with sodium dodecyl (lauryl) sulfate (SDS)-NaOH. Of the specimens decontaminated with NALC, 39 were MTD and culture positive, 455 were MTD and culture negative, 18 were MTD positive and culture negative, and 3 were MTD negative and culture positive, indicating a sensitivity of 92.9% and a specificity of 96.2% for the MTD. Of the specimens decontaminated with SDS, 35 were MTD and culture positive, 372 were MTD and culture negative, 15 were MTD positive and culture negative, and 1 was MTD negative and culture positive, indicating a sensitivity of 97.2% and a specificity of 96.1% for the MTD. After resolution of discrepant results by review of the patients' clinical data, the sensitivity of the MTD was 93.9%, the specificity was 97.6%, the positive predictive value was 80.7%, and the negative predictive value was 99.3% for the NALC series; the corresponding values were 97.4, 96.9, 76. , and 99.7%, respectively, for the SDS series. In conclusion, the MTD is a highly sensitive and specific technique for detecting M. tuberculosis complex within hours in both smear-positive and smear-negative respiratory specimens.
Mesh-terms: Adult; Aged; Aged, 80 and over; Bacteriological Techniques :: statistics & numerical data; Child, Preschool; Comparative Study; Diagnostic Errors; Evaluation Studies; Female; Human; Male; Microscopy, Fluorescence :: statistics & numerical data; Middle Aged; Molecular Probe Techniques :: statistics & numerical data; Mycobacterium tuberculosis :: genetics; Mycobacterium tuberculosis :: isolation & purification; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: microbiology; Sensitivity and Specificity; Tuberculosis :: diagnosis; Tuberculosis :: microbiology;
Mesh-terms: Adult; Age Factors; Aged; Anti-Bacterial Agents :: therapeutic use; Bacteria :: growth & development; Cross Infection :: diagnosis; Cross Infection :: epidemiology; Cross Infection :: etiology; Cross Infection :: mortality; Drug Resistance, Microbial; Escherichia coli :: isolation & purification; Female; Human; Klebsiella :: isolation & purification; Male; Middle Aged; Pneumonia :: drug therapy; Prospective Studies; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: epidemiology; Respiratory Tract Infections :: etiology; Respiratory Tract Infections :: mortality; Staphylococcal Infections :: epidemiology;
Department of Virology, Christian Medical College Hospital, Tamilnadu, India.
The reliability of clinical signs that might be used by village health workers in distinguishing acute lower respiratory infection (LRI) from upper respiratory infections (URI) in children was evaluated. 142 infants and 108 preschool children with LRI and 151 infants and 281 preschool children with URI, attending hospital, were studied. Respiratory rates of over 50/min in infants and over 40/min in children 12-35 months of age, as well as a history of rapid breathing and the presence of chest retractions in both age groups, were found to be sensitive and specific indicators of LRI. Increased respiratory rates and history of rapid breathing were also sensitive in diagnosis of less severe LRI that did not necessitate admission to the wards, whereas chest retraction was not. All these clinical signs had a low sensitivity in diagnosing LRI in children aged 36 months and over.
L Borio,
D Frank,
V Mani,
C Chiriboga,
M Pollanen,
M Ripple,
S Ali,
C DiAngelo,
J Lee,
J Arden,
J Titus,
D Fowler,
T O'Toole,
H Masur,
J Bartlett,
T Inglesby
On October 9, 2001, a letter containing anthrax spores was mailed from New Jersey to Washington, DC. The letter was processed at a major postal facility in Washington, DC, and opened in the Senate's Hart Office Building on October 15. Between October 19 and October 26, there were 5 cases of inhalational anthrax among postal workers who were employed at that major facility or who handled bulk mail originating from that facility. The cases of 2 postal workers who died of inhalational anthrax are reported here. Both patients had nonspecific prodromal illnesses. One patient developed predominantly gastrointestinal symptoms, including nausea, vomiting, and abdominal pain. The other patient had a "flulike" illness associated with myalgias and malaise. Both patients ultimately developed dyspnea, retrosternal chest pressure, and respiratory failure requiring mechanical ventilation. Leukocytosis and hemoconcentration were noted in both cases prior to death. Both patients had evidence of mediastinitis and extensive pulmonary infiltrates late in their course of illness. The durations of illness were 7 days and 5 days from onset of symptoms to death; both patients died within 24 hours of hospitalization. Without a clinician's high index of suspicion, the diagnosis of inhalational anthrax is difficult during nonspecific prodromal illness. Clinicians have an urgent need for prompt communication of vital epidemiologic information that could focus their diagnostic evaluation. Rapid diagnostic assays to distinguish more common infectious processes from agents of bioterrorism also could improve management strategies.
Mesh-terms: Abdominal Pain :: complications; Anthrax :: blood; Anthrax :: diagnosis; Anthrax :: physiopathology; Anthrax :: therapy; Anti-Bacterial Agents :: therapeutic use; Bacillus anthracis :: isolation & purification; Bioterrorism; Blood :: microbiology; Bradycardia :: etiology; District of Columbia; Dyspnea :: complications; Fatal Outcome; Fever :: complications; Heart Arrest :: etiology; Homicide; Human; Leukocytosis; Male; Mediastinitis :: radiography; Middle Aged; Nausea :: complications; Occupational Exposure; Pleural Effusion :: radiography; Postal Service; Radiography, Thoracic; Respiration, Artificial; Respiratory Tract Infections :: blood; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: microbiology; Respiratory Tract Infections :: physiopathology; Respiratory Tract Infections :: therapy; Spores, Bacterial :: isolation & purification; Tachycardia :: etiology; Tomography, X-Ray Computed;
Infectious Disease Associates, J.F.K. Medical Center, Atlantis, Florida, USA.
Mesh-terms: Anthrax :: cerebrospinal fluid; Anthrax :: diagnosis; Bacillus anthracis :: isolation & purification; Bioterrorism; Blood Chemical Analysis; Cerebrospinal Fluid :: immunology; Cerebrospinal Fluid :: microbiology; Fatal Outcome; Florida; Hematologic Tests; Human; Male; Mediastinum :: radiography; Middle Aged; Newspapers; Occupational Exposure; Respiratory Tract Infections :: cerebrospinal fluid; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: microbiology; Spores, Bacterial :: isolation & purification; United States;
University de Paris René Descartes, Service de Pneumologie, Hôpital Ambroise Paré, Boulogne, France.
A survey of first-line antibiotic prescription in community-acquired lower respiratory tract infection (LRTI) by general practitioners (GP) was carried out simultaneously, using the same methodology in France, Germany, Italy, Spain and the UK. Data were obtained from 2,056 patients and 605 GPs. There was no antibiotic prescription in 17% of all LRTIs and 13% of community-acquired pneumonia (CAP) in the five countries taken together; and in 32% of all LRTIs and in 23% of CAP in Germany. Of patients with acute bronchitis, exacerbation of chronic bronchitis and viral lower respiratory tract infection, 87, 92 and 71% received antibiotics, respectively. The most frequent prescriptions were penicillins in France and the UK, third-generation cephalosporin in Italy, tetracycline in Germany and macrolide in Spain. The daily dosage of aminopenicillin prescribed was: 41%<1.5 g; 49%> or = 1.5 g and <3 g; and 10%> or = 3 g. In Italy, 53% of all antibiotics were injected in all LRTIs, and 71% in CAP; in contrast, antibiotic injection was lower than 2% both in the UK and Germany, with an average of 14% in the five countries combined. We conclude that there are variations in antibiotic prescription by GPs in Western Europe; differences are likely to be multifactorial, but could, in part, be explained by differences in health systems and sources of information available to GPs.
Mesh-terms: Adult; Aged; Analysis of Variance; Anti-Bacterial Agents :: administration & dosage; Anti-Bacterial Agents :: therapeutic use; Community-Acquired Infections :: diagnosis; Community-Acquired Infections :: drug therapy; Data Collection; Drug Utilization :: trends; Europe; Family Practice; Female; Human; Male; Middle Aged; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: drug therapy; Support, Non-U.S. Gov't;
During a 2 1/2-year period, we studied 386 University of Washington students with acute respiratory disease, to determine whether a Chlamydia psittaci strain, here designated TWAR, is an important respiratory pathogen. Serologic evidence of recent TWAR infection was found in 13 students, and the organism was isolated from 8 of these. TWAR infection occurred in 12 percent of the students who had pneumonia (9 of 76), 5 percent of those with bronchitis (3 of 63), and 1 percent of those with pharyngitis (1 of 150). The TWAR infections occurred throughout the study period. Pharyngitis, often accompanied by laryngitis, was a common first symptom. Clinically, the infections resembled those with Myco-plasma pneumoniae; therefore, the patients were given courses of erythromycin used for the treatment of M. pneumoniae infections. This therapy proved to be inadequate. The limited data available suggest that the TWAR strain is a "human" C. psittaci that is spread from human to human, without a bird or animal host.
Mesh-terms: Acute Disease; Adult; Chlamydia Infections :: diagnosis; Chlamydia Infections :: microbiology; Chlamydia Infections :: transmission; Chlamydophila psittaci :: classification; Chlamydophila psittaci :: immunology; Chlamydophila psittaci :: isolation & purification; Diagnosis, Differential; Female; Humans; Male; Pharyngitis :: microbiology; Pneumonia :: microbiology; Pneumonia, Mycoplasma :: diagnosis; Research Support, U.S. Gov't, P.H.S. ; Respiratory Tract Infections :: diagnosis; Respiratory Tract Infections :: microbiology; Respiratory Tract Infections :: transmission;
