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Thrombocytopenia in a surgical ICU
F Stéphan1, J Hollande, O Richard
1Service d'Anesthésie-Réanimation chirurgicale, Hôpital Tenon, Paris, France.
Chest
|May 20, 1999
Summary
Thrombocytopenia affects 35% of surgical ICU patients, increasing mortality risk. Sepsis is a key risk factor, but platelet count recovery improves outcomes.
Area of Science:
- Critical Care Medicine
- Hematology
- Surgical Patient Management
Background:
- Thrombocytopenia, a low platelet count, is a common complication in surgical intensive care units (ICUs).
- Understanding its incidence, risk factors, and impact on patient outcomes is crucial for effective management.
Purpose of the Study:
- To determine the incidence of thrombocytopenia in surgical ICU patients.
- To identify factors associated with thrombocytopenia and its impact on mortality.
- To explore the underlying mechanisms contributing to thrombocytopenia.
Main Methods:
- A prospective study was conducted over six months in an 8-bed surgical ICU.
- 147 consecutive patients were analyzed for thrombocytopenia (platelet count < 100,000/mm3).
- Logistic regression identified risk factors, and mechanisms like disseminated intravascular coagulation and elevated IgG were investigated.
Main Results:
- Thrombocytopenia occurred in 35% of patients, with a 38% mortality rate compared to 20% in non-thrombocytopenic patients (p=0.02).
- Independent risk factors included sepsis, bleeding/transfusions, and high APACHE II scores (>15).
- Mechanisms identified were disseminated intravascular coagulation (40%), elevated platelet-associated IgG (33%), and hemophagocytic histiocytes (67%).
Conclusions:
- Sepsis is a primary risk factor for thrombocytopenia in surgical ICUs.
- Thrombocytopenia is linked to higher ICU mortality due to underlying disease severity.
- Platelet count correction is a positive prognostic indicator, and bone marrow examination aids diagnosis when causes are unclear.