Clinical comparison of glucose broth with nutrient broth blood cultures for the detection of "Streptococcus viridans" bacteraemia

Abstract

SUMMARY. 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 "Streptococcus viridans" bacteraemia after incubation of the broth for 2-7 days.

Comparative study of detection of bacteremia after different oral surgical procedures

“…Many studies have reported a frequency of postextraction bacteremia in children as significantly lower than the figures reported for adults. [ 5 6 ] In 2009, Lockhart et al ,[ 5 ] using a logistic regression model, found that the prevalence of bacteremia following dental extractions increased significantly with age. In contrast to these studies, we found that at all periods, the prevalence of the bacteremia was higher in lower age group than higher age group.…”

“…[ 2 3 ] Various studies have been conducted to study the association of bacteremia with dental procedures and to establish any correlation with factors like age, gender, type of procedure, duration of surgery, etc. [ 4 5 6 7 ]…”