Comparative study on the positive rate of blood culture at different body temperatures
Objective:To compare the impact of different timing of temperature measurement on the positivity rate of blood cultures in hospitalized febrile pediatric patients.Methods:A retrospective study was conducted on 530 pediatric patients who underwent blood culture collection in the infectious disease ward of Beijing Children's Hospital affiliated to Capital Medical University between January and December 2023.The patients were divided into a febrile group and a non-febrile group based on their body temperature at the time of blood culture collection,and the positivity rate of blood cultures and the distribution of positive pathogens were compared between the two groups.Results:A total of 11 positive patients were detected,with a positivity rate of 2.1% .Among them,there were 6 cases in the febrile group and 5 cases in the non-febrile group;the positivity rate was 2.3% in the non-febrile group and 1.9% in the febrile group,with no statistically significant difference between the two groups(P>0.05).There was also no statistically significant difference in the positivity rate of blood cultures among different temperature groups(P>0.05),with the highest positivity rate(3.4% )observed in the low fever group.There was no statistically significant difference in the distribution of positive pathogens in blood cultures between the two groups(P>0.05).Conclusion:For hospitalized pediatric patients who have received antibiotics,collecting blood cultures during the initial stages of shivering or fever has no significant impact on the positivity rate of blood cultures,and the normal temperature period is also a viable option for blood culture collection.