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An improved technique for culture of catheter tips from open-heart surgery patients
  1. R Freeman,
  2. N Hjersing
  1. Department of Microbiology, Freeman Hospital, Newcastle upon Tyne


    Bacteria were isolated from 19·6% of left atrial catheter tips from open-heart surgical patients when incubation of the culture was prolonged to eight days and the prophylactic antibiotic given to the patient (flucloxacillin) was specifically neutralised with beta-lactamase. This compares with the previous estimate of 9·9% when a standard culture method was employed. Additionally, diphtheroid organisms were recovered from left atrial catheter tips using this new technique.

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