Impact of neutropenia on the clinical outcomes of Staphylococcus aureus bacteremia in patients with hematologic malignancies: a 10-year experience in a tertiary care hospital

  • Byung-Han Ryu
  • Seung Cheol Lee
  • Minjeong Kim
  • Yewon Eom
  • Jiwon Jung
  • Min Jae Kim
  • Heungsup Sung
  • Mi-Na Kim
  • Sung-Han Kim
  • Sang-Oh Lee
  • Sang-Ho Choi
  • Jun Hee Woo
  • Yang Soo KimEmail author
  • Yong Pil ChongEmail author
Original Article


Staphylococcus aureus bacteremia is one of the most serious bacterial infections and may lead to worse clinical outcomes in patients with prolonged severe neutropenia. However, clinical data on S. aureus bacteremia in neutropenic patients with hematologic malignancies are limited. We conducted two case-control studies using a 10-year prospective cohort of patients with S. aureus bacteremia. Neutropenic and non-neutropenic hematologic malignancy patients were compared on clinical characteristics and treatment outcomes. An additional matched case-control study using solid tumor patients was conducted. Risk factors for 12-week mortality were analyzed. Of 1643 patients with S. aureus bacteremia, 64 (3.9%) neutropenic and 108 (6.6%) non-neutropenic patients with hematologic malignancies were included in the study. There were no significant differences in the incidence of metastatic infection between the two groups (17.2% vs. 17.6%, p = 0.95), in contrast with a previous study that observed no metastatic infection in neutropenic patients. Twelve-week mortality in neutropenic patients with hematologic malignancies tended to be lower than in non-neutropenic patients with hematologic malignancies (15.6% vs. 26.9%, p = 0.09) and was significantly lower than in neutropenic patients with solid tumors (15.6% vs. 45.8%, p = 0.003). Independent risk factors for mortality in hematologic malignancy patients with S. aureus bacteremia were high Charlson comorbidity score, high APACHE II score, and skin and soft tissue infection. Neutropenia was not independently associated with mortality. Our findings suggest that neutropenia in hematologic malignancies may not affect the incidence of metastatic infection or 12-week mortality of S. aureus bacteremia.


Staphylococcus aureus Bacteremia Neutropenia Hematologic malignancies 


Funding information

This work was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number HI15C2918).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Ethics approval and consent to participate

This study was approved by the Asan Medical Center Institutional Review Board.

Supplementary material

10096_2019_3802_MOESM1_ESM.doc (80 kb)
ESM 1 (DOC 79.5 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Infectious DiseasesGyeongsang National University Changwon HospitalChangwonRepublic of Korea
  2. 2.Department of Infectious Diseases and Department of Medical science, Asan Medical Institute of Convergence Science and Technology, Asan Medical CenterUniversity of Ulsan College of MedicineSeoulRepublic of Korea
  3. 3.Department of Infectious Diseases, Asan Medical CenterUniversity of Ulsan College of MedicineSeoulRepublic of Korea
  4. 4.Department of Laboratory Medicine, Asan Medical CenterUniversity of Ulsan College of MedicineSeoulRepublic of Korea

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