ABSTRACT
OBJECTIVE：To analyze the distribution and drug resistance of bloodstream infection pathogens in a Children’s Hospital from Zhengzhou，and to provide reference rational selection of drugs in anti-infective treatment. METHODS：By retrospective analysis，128 318 blood culture specimens were collected from inpatients in the Affiliated Children’s Hospital of Zhengzhou University from Oct. 2014 to Sept. 2019. The positive rate，clinical symptoms and clinical diagnosis of children with bloodstream infection were analyzed statistically. WHONET 5.6 software was used to analyze pathogenic bacteria of positive specimen，the departments and the resistance of pathogens to the main clinical antibiotics. RESULTS：In 128 318 blood culture samples of inpatients，the positive rate was 2.14％ （2 746/128 318）；among 2 746 blood culture positive sample，the main Symptom of childrem with blood stream infection was fever（1 986/2 746）；main clinical diagnosis included sepsis（1 679/2 746）， bronchopneumonia（858/2 746），purulent meningitis（555/2 746）. The main departments included neonatal diagnosis and treatment center （1 090 strains，accounting for 39.69％） [neonatal intensive care unit （279 strains，accounting for 10.16％），neonatal surgery department （223 strains，accounting for 8.12％），neonatal internal medicine department （209 strains，accounting for 7.61％），infant pediatrics department（200 strains，accounting for 7.28％） and premature pediatrics department（179 strains， accounting for 6.52％）]，hematology oncology department （216 strains，accounting for 7.87％），cardio vascular medicine department（206 strains，accounting for 7.50％）. Gram-positive bacteria accounted for 72.80％，Gram-negative bacteria 24.21％， fugus 2.99％. Among Gram-positive bacteria，coagulase negative staphylococcus（1 414 strains）and Staphylococcus aureus（146 strains）were the most common. The resistance rate of the former to penicillin G，oxacillin and erythromycin was more than 80％， and that of the latter to penicillin G and erythromycin was more than 80％. Among Gram-negative bacteria，Klebsiella pneumoniae （183 strains） and Escherichia coli （172 strains） were the most common. The resistance rates of the former to ampicillin， piperacillin，ampicillin/sulbactam and cefazolin were more than 80％，and the latter to ampicillin and tetracycline were more than 80％. Among the fungus，Candida albicans（42 strains）and Candida parapsilosis（22 strains）were the most common，and the resistance rate to common antifungal drugs was less than 10％. CONCLUSIONS：The pathogens of bloodstream infection in the hospital are complex，mainly coagulase negative staphylococcus and K. pneumoniae，and the drug resistance is severe.
ABSTRACT
Objective:To analyze the epidemiological and clinical characteristics of children with brucellosis, and to provide a practical basis and experience for clinical diagnosis and treatment of brucellosis.Methods:Retrospective analysis was used to collect clinical data of children with brucellosis diagnosed at the Children's Hospital Affiliated to Zhengzhou University from May 2015 to October 2017, and their epidemiological characteristics, clinical manifestations, laboratory tests, and clinical diagnosis and treatment were summarized.Results:A total of 24 children were included, including 14 males and 10 females, with an average age of 6 years (1 year 2 months to 12 years old). Except February, onset throughout the year, higher incidence was from May to July (14 cases, 58.33%). The exposure history of the children was mainly exposure to cattle and sheep and consumption of beef and mutton (18 cases, 75.00%). The main clinical manifestations were fever in 24 cases (100.00%), bone and joint pain in 14 cases (58.33%), hepatomegaly in 9 cases (37.50%), splenomegaly in 7 cases (29.17%). Tube agglutination test (SAT) was positive in 21 cases (87.50%), weakly positive in 1 case (4.17%) and negative in 2 cases (8.33%). Brucella was detected in all 24 cases by microbial culture, and in 18 cases (75.00%) by blood culture. Eighteen cases (75.00%) had liver dysfunction. Thirteen cases were misdiagnosed, and the misdiagnosis rate was as high as 54.17%. Twenty-two cases had been cured after treatment, 2 cases relapsed and recovered after continued treatment. Conclusions:Children with brucellosis have diverse epidemiology and clinical features, and are easily misdiagnosed. For children with fever, bone and joint pain and exposure history, pediatricians should be alert to the possibility of brucellosis, conduct microbiological and serological tests, in order to timely, accurate and standardized diagnosis and treatment of children with brucellosis.