Viridans streptococci were isolated from the blood stream of half of 50 patients undergoing dental extractions approx. 2 min before blood culture. Glucose and nutrient broths were tested in parallel. There was no significant difference between the isolation rates of streptococci by the two methods after incubation for 7 days, nor did the addition of glucose 0.1% to nutrient broth significantly increase the speed of detection of streptococci; the isolation rates of streptococci during the first 48 h of incubation were similar with both types of broth. Although there were a few more isolations of streptococci from the glucose broth than from the nutrient broth during the first 20 h. the difference was not statistically significant. No rapid lethal effect against streptococci was observed in glucose broth during incubation for 7 days. These results suggest that adding glucose 0.1% to nutrient broth for blood culture does not influence the recovery of organisms from patients with “” bacteraemia after incubation of the broth for 2-7 days.


Article metrics loading...

Loading full text...

Full text loading...



  1. Lowes J. A. 1980; Ten years of infective endocarditis at St Bartholomew’s Hospital: analysis of clinical features and treatment in relation of prognosis and mortality. Lancet 1:133–136
    [Google Scholar]
  2. Oakley C. M., Darrell J. H. 1982; Prevention of infective endocarditis in the 1980’s. In The nature and prevention of bacterial endocarditis edited by Cawson R. A. The Medicine Publishing Foundation; Oxford: pp 35–38
    [Google Scholar]
  3. Stokes E. J. 1974; Blood culture technique. Association of Clinical Pathologists Broadsheet no. 81. p 12
    [Google Scholar]
  4. Stokes E. J., Ridgway G. L. 1980; Clinical Bacteriology. 5th ed Arnold E. London: p 43
    [Google Scholar]
  5. Waterworth P. M. 1972; The lethal effect of tryptone-soya broth. Journal of Clinical Pathology 25:227–228
    [Google Scholar]

Data & Media loading...

Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error