Ability of whole blood aggregometer to detect platelet hyperaggregability

Area of Science:

• Hematology
• Clinical Pathology
• Thrombosis Research

Background:

• Thromboembolic complications are a significant concern in ischemic heart disease (IHD) and diabetes.
• Assessing platelet function is crucial for understanding thrombotic risk.
• Existing methods may not fully capture platelet reactivity in complex clinical conditions.

Purpose of the Study:

• To investigate the reliability of whole blood (WB) platelet aggregation analysis.
• To compare platelet aggregation in healthy subjects, IHD patients, and diabetic patients.
• To evaluate spontaneous and collagen-induced platelet aggregation under various conditions.

Main Methods:

• Evaluated spontaneous (SPA) and collagen-induced platelet aggregation.
• Utilized impedance method for WB and diluted blood.
• Employed Born aggregometer for platelet-rich plasma (PRP).
• Included 18 healthy subjects, 15 IHD patients, and 15 diabetic patients.

Main Results:

• Spontaneous platelet aggregation occurred more frequently in WB than PRP.
• WB spontaneous aggregation was significantly higher in IHD and diabetic patients compared to controls.
• Collagen-induced WB aggregation was significantly elevated in IHD and diabetic patients (P < 0.01).
• Diluted WB and PRP aggregation showed no significant differences between patient groups and controls.
• WB aggregation correlated with megathrombocyte count (r = 0.31, P < 0.05) but not platelet count or hematocrit.

Conclusions:

• Whole blood platelet aggregation is a more sensitive method for detecting increased platelet activity in IHD and diabetes.
• WB aggregation reliably identifies patients at higher risk for thromboembolic events.
• This assay can serve as a valuable tool for clinical risk stratification in cardiovascular and metabolic diseases.