Single Center Analysis of Bloodstream Infection Clinical Characteristics and Prognosis in Patients with Hematological Malignancies in the Tropics / 中国实验血液学杂志

OBJECTIVE@#To analyze the characteristics, prognosis and risk factors of bloodstream infection in patients with hematological malignancies in the tropics, so as to provide evidence for the prevention and treatment of bloodstream infection.@*METHODS@#The clinical features, blood culture results and prognosis of patients with bloodstream infection in patients with hematological malignancies admitted to Hainan Hospital of PLA General Hospital were retrospectively studied.@*RESULTS@#The most common primary infection site of the 81 patients with hematological malignancies was lung (46.91%), followed by PICC (11.11%). The detection rate of Gram-positive bacteria and Gram-negative bacteria in the blood culture was 60.98% and 30.02%, respectively. Coagulase-negative staphylococci was the most common Gram-positive bacteria resulting in bloodstream infection in our study. Of the Gram-negatives, Klebsiella pneumoniae (34.38%) was predominant, followed by Escherichia coli (18.75%) and Pseudomonas aeruginosa (18.75%). Gram-positive bacteria was highly sensitive (100%) to vancomycin, linezolid and tigecycline. Study showed that Gram-negative bacteria had low sensitive to quinolones, in particular, the resistance rate of Escherichia coli to quinolones was as high as 83.33%. In terms of overall survival (OS), the 30-days OS of patients with Gram-negative and Gram-positive septicemia was 77.42% and 92.00%, respectively. There was no statistically significant difference between the two groups. Multivariate analysis revealed that septic shock (P=0.001, RR=269.27) was an independent risk factor for 30-day mortality, and remission status (P=0.027, RR=0.114) was an independent predictor of a favourable outcome of bloodstream infection in patients with hematological malignancies.@*CONCLUSION@#Gram-positive bacteria are the main pathogens causing bloodstream infections in patients with hematological malignancies in the tropics. Improving the care of PICC is an important measure to reduce the incidence of bloodstream infection in patients with hematological malignancies in the tropics. A correct treatment relieving disease and effective prevention and treatment of septic shock can reduce mortality of patients with bloodstream infection in patients with hematological malignancies in the tropics.

Single Center Analysis of Pathogenic Characteristics of Lung Candida Infection and Other Pathogenic Bacteria Infection in the Patients with Hemotological Maliglancies in the Tropical Region of Hainan / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To analyze the infection characteristics of sputum and venous blood pathogen in the patients with hematological malignancies and respiratory symptom in the Hematology Department in tropical region and to investigate its drug-resistance so as to provide etiological evidence for clinical treatment.</p><p><b>METHODS</b>The pathogens and their drug-resistance of 2466 samples in the patients with hematological malignancies and respiratory symptom in the Department were analyzed retrospectively from January 2013 to November 2017. The samples were collected from sputum and venous blood.</p><p><b>RESULTS</b>The sputum sample culture in patients with hematologic diseases showed that 224 strains were isolated, out of them 98 strains (43.75%) were fungi mainly candida albicans (41 strains); and then 88 Gram-negative strains (39.28%), among them the main pathogenic bacteria were Escherichia coli(22 strains) and klebsiella Klebsiella pneumoniae(12 strains); and then 38 Gram-positive strains (16.96%), among them the main pathogeni-bacteria were Enteroccocus (14 strains) and Gram-positive bacilli (14 strains). The blood samples culture of patients with hematologic diseases showed that 61 strains were isolated, out of them the isolated rate of Gram-positive bactetia was higherst, which accounted for 55.74%(34/61), mainly including staphylococcus lominis (19 strains); and the isolated rate of Gram-negative bacteria was 44.26% (27/61), among them main pathogenic bacteria was Klebsiella pneumoniae (12 strains). The resistance test of pathogenic bacteria to drugs showed that the resistant rate of Gram-negative bacteria to tigecycline, imipenem and atl-962 duenner was lowest, while the Gram-positive pathogenic bacteria such as Enterococcus, Gram-positive bacilli and Staphylococcus aureus were sensitive to vancomycin, tigecycline and linezolid was high.</p><p><b>CONCLUSION</b>the patients in hematology department are infected easily in the hospital in tropical region. The main pathogens are fungal strains in the respiratory tract of patients with hematological malignancy according to the sputum culture results. The clinician in tropical regions should choose suitable antibiotics for anti-infective therapy, which is different from the situation in North China or other northern areas.</p>