Glandular tularemia with typhoidal features in a Manitoba child.
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Biomedical subjects
Publications and source records attributed to G Lindsay.
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Temafloxacin, a new fluoroquinolone with broad-spectrum anti-bacterial activity and a favourable pharmacokinetic profile, was evaluated in a prospective, randomized double-blind multicentre study in which 564 patients were enrolled. Ambulatory adults with lower respiratory tract infections were randomly assigned to receive temafloxacin 600 mg or ciprofloxacin 750 mg, each given every 12 h for 7-14 days. Cure or improvement occurred in 93.8% of temafloxacin patients and 93.1% of ciprofloxacin recipients (P greater than 0.05). Bacteriological eradication rates were higher in the temafloxacin group than in the ciprofloxacin group (99.5% vs 92.5%; P = 0.001) primarily because of the failure of ciprofloxacin to eradicate Streptococcus pneumoniae (P = 0.01). Both regimens were well tolerated. In patients who received concomitant theophylline, gastrointestinal and central nervous system disturbances occurred in a higher percentage of patients in the ciprofloxacin group than the temafloxacin group (36.4% vs 9.4%; P less than 0.05). This study indicates that temafloxacin would be suitable for the empirical treatment of lower respiratory tract infections, including high-risk groups such as the elderly and heavy smokers.
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It has been much easier to obtain original data on adverse drug reactions (ADR) of quinolones from the pharmaceutical industry than it was two years ago. This is to be welcomed and, as anticipated, the new data continue to suggest that the new 4-quinolones have an ADR profile which is very similar to that of other antimicrobials. Visual disturbance is not a prominent feature, in contrast to the ADR profile of nalidixic acid. Better definition of quinolone ADRs requires prospective study, and the results of a newly completed prescription event monitoring study are awaited with interest. The potential use of computerised databases and record linkage is examined, but at present the number of quinolone prescriptions is too small to assess documentation of serious but rare events such as convulsions. Physicians need to be aware of the limitations of current data on suspected ADRs. Further investment in computerised databases is required to satisfy the requirements for attributing causality of an event to a drug.
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Two panels of monoclonal antibody reagents were used to serotype all strains of Neisseria gonorrhoeae isolated from four separate geographical areas serving two million of the five million Scottish population. Serotype 1B isolates accounted for 60% of the 869 strains examined and were more prevalent than 1A isolates in each geographical area. A total of 11 1A serovars and 47 1B serovars were recognised. Only two of the 11 1A serovars (Aedgkih/Arost and Aedih/Arst) were found in every centre but these accounted for over 90% of the 1A isolates. Although there was a total of 47 different 1B serovars over 80% of the isolates were accounted for by the ten most commonly encountered serovars. There were, however, marked geographical differences within both major and minor serovars. There was a highly significant difference (P less than 0.001) between protein 1A and 1B serovars with respect to their susceptibility to penicillin. Within each protein 1 type there were also differences in antibiotic susceptibility. Penicillinase-producing N. gonorrhoeae (PPNG) were found in all centres and accounted for 24 (2.8%) of the 869 isolates. The majority of the PPNG (71%) were serotype 1A and with one exception were serovar Aedih/Arst. PPNG strains accounted for 37% (16) of the 43 Aedih/Arst isolates. Epidemiological, diagnostic and therapeutic implications arising from the distinct geographical differences in the pool of circulating gonococci are discussed.
A prospective audit of 644 patients undergoing biliary tract operations has been conducted in ten district general hospitals. All patients received a single dose of ampicillin 2 g and sulbactam 1 g as antibiotic prophylaxis. Bacteria were cultured from the bile of 121 patients. In patients with sterile bile the incidence of postoperative infection was 2.5%, while in those with colonized bile it was 22% (P less than 0.0001). The 35 patients from whose bile bacteria of two or more species were isolated, had a higher incidence of wound infection (34%) than those whose bile yielded only one species of bacterium (17%; P less than 0.05). Seventeen of the 27 patients with colonized bile who developed postoperative infection were shown to be infected by the same organisms that had been isolated from their bile. The patients whose bile yielded organisms resistant to the prophylactic antibiotic combination did not have a significantly higher rate of infection than those from whose bile only sensitive organisms were obtained. A marked difference in sensitivity patterns between the participating hospitals was observed.
One hundred and one patients received oral ciprofloxacin prior to elective cataract removal. The quinolone content of the aqueous humour ranged from 2.7% to 15.4% of the corresponding serum level. The mean aqueous peak exceeded 0.4 mg/l between 2 and 3.5 h after administration. The highest aqueous concentration was achieved with a 1 g dose. In uninflamed eyes oral ciprofloxacin achieved intraocular concentrations that are bactericidal for Gram-negative bacteria including Pseudomonas aeruginosa. It may prove useful in the treatment of established intraocular infection and in prophylaxis prior to silastic implants.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.