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Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
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Characteristics of the post-surgical decrease in platelet counts in orthopedic surgery patients, observations and
George Zacharia1, Bartosz Walczyszyn1, Kolton Smith1
1Lenox Hill Hospital, New York, NY, USA.
Hematology, Transfusion and Cell Therapy
|August 16, 2023
Summary
Post-operative orthopedic surgery patients frequently experience reduced platelet counts (PLT), with the lowest levels typically seen by day 2. However, clinically significant thrombocytopenia is rare, especially in younger patients.
Area of Science:
- Orthopedic Surgery
- Hematology
Background:
- Reduced platelet count (PLT) is common after orthopedic surgery.
- Characteristics of post-surgical thrombocytopenia remain underexplored.
Purpose of the Study:
- To describe the incidence and characteristics of post-operative thrombocytopenia in orthopedic surgery patients.
- To identify factors influencing post-operative PLT reduction.
Main Methods:
- Retrospective chart review of knee or hip replacement patients (2012-2015).
- Exclusion of patients who received heparin.
- Analysis of platelet counts on post-operative days 0-4.
Main Results:
- 90.9% of patients showed reduced PLT by post-operative day 1.
- The nadir PLT occurred on day 2 (mean 201.3 × 10^9/L), with an average decrease of 24%.
- Older patients (>65 years) experienced a significantly greater PLT reduction compared to younger patients (p=0.007).
Conclusions:
- Post-operative PLT reduction is frequent in orthopedic surgery, even without heparin.
- Clinically significant thrombocytopenia (<100 × 10^9/L) is uncommon.
- Elderly patients warrant closer monitoring for post-operative PLT changes.
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