Annals of Hematology

, Volume 93, Issue 6, pp 1023–1029 | Cite as

Absolute lymphocyte count and risk of short-term infection in patients with immune thrombocytopenia

  • Ming-Hung Hu
  • Yuan-Bin Yu
  • Yu-Chung Huang
  • Jyh-Pyng Gau
  • Liang-Tsai Hsiao
  • Jin-Hwang Liu
  • Ming-Huang Chen
  • Tzeon-Jye Chiou
  • Po-Min Chen
  • Cheng-Hwai Tzeng
  • Chun-Yu Liu
Original Article

Abstract

Patients with immune thrombocytopenia (ITP) may be at increased risk of infection because of the steroids and other immunosuppressive agents used in its treatment. This study aimed to identify events that are associated with infection within 6 months of diagnosis and the impact that infection has on survival. We retrospectively evaluated 239 patients (107 men, 132 women; median age 61 years) diagnosed between January 1997 and August 2011. Every patient received steroid treatment according to the platelet count and the extent of bleeding. Logistic regression analysis was used to identify risk factors associated with the development of infection within 6 months of ITP being diagnosed. Sixty-two patients (25.9 %) developed an infection within 6 months of diagnosis. Multivariate analysis revealed that a lower absolute lymphocyte count (ALC) at diagnosis (<1 × 109/l) was an independent risk factor for infection (P = 0.039; 95 % confidence interval, 1.033–3.599; odds ratio, 1.928). The time to infection event is significant shorter in those of low ALC, compared with those of higher ALC (P = 0.032). Furthermore, the 1-year mortality rate after ITP diagnosis was significantly higher in those patients who developed an infection (P = 0.001). ITP patients with a low absolute lymphocyte count at diagnosis have an increased risk of infection, and those who develop infections have lower 1-year survival.

Keywords

Immune thrombocytopenia (ITP) Absolute lymphocyte count (ALC) Lymphopenia Infection 

Notes

Acknowledgments

This study was supported by the Taiwan Clinical Oncology Research Foundation and a grant from Taipei Veterans General Hospital V101A-004.

Conflict of interests

The authors declare no conflict of interest.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Ming-Hung Hu
    • 1
    • 3
    • 5
  • Yuan-Bin Yu
    • 1
    • 3
  • Yu-Chung Huang
    • 1
    • 3
    • 4
  • Jyh-Pyng Gau
    • 1
    • 3
  • Liang-Tsai Hsiao
    • 1
    • 3
  • Jin-Hwang Liu
    • 1
    • 3
  • Ming-Huang Chen
    • 1
    • 3
  • Tzeon-Jye Chiou
    • 2
    • 3
  • Po-Min Chen
    • 1
    • 3
  • Cheng-Hwai Tzeng
    • 1
    • 3
  • Chun-Yu Liu
    • 1
    • 3
  1. 1.Division of Haematology and Oncology, Department of MedicineTaipei Veterans General HospitalTaipei CityRepublic of China
  2. 2.Division of Transfusion Medicine, Department of MedicineTaipei Veterans General HospitalTaipeiRepublic of China
  3. 3.National Yang-Ming University School of MedicineTaipeiRepublic of China
  4. 4.Division of Haematology and Oncology, Department of MedicineTaoyuan Veterans HospitalTaoyuan CityRepublic of China
  5. 5.Division of Haematology and Oncology, Department of MedicineCardinal Tien HospitalNew Taipei CityTaiwan

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