Reactive thrombocytosis in pulmonary tuberculosis.

Area of Science:

• Hematology
• Infectious Diseases
• Pulmonary Medicine

Background:

• Reactive thrombocytosis is a condition characterized by elevated platelet counts.
• Pulmonary tuberculosis is an infectious disease affecting the lungs.

Purpose of the Study:

• To investigate the incidence and characteristics of reactive thrombocytosis in patients with active pulmonary tuberculosis.
• To explore the relationship between thrombocytosis and markers of inflammation in tuberculosis.

Main Methods:

• Studied 122 patients with active pulmonary tuberculosis.
• Analyzed platelet counts, mean platelet volume, platelet survival, in vitro platelet aggregation, and serum thrombopoiesis stimulating activity.
• Correlated thrombocytosis with erythrocyte sedimentation rate and C-reactive protein levels.

Main Results:

• Thrombocytosis was frequent, with platelet counts often exceeding 1 x 10(12)/L.
• A significant inverse non-linear correlation was found between mean platelet volume and platelet count (r = -0.54).
• Platelet survival was shortened, in vitro aggregation was excessive, and serum thrombopoiesis stimulating activity was elevated.
• Thrombocytosis correlated significantly with inflammation markers: erythrocyte sedimentation rate (r = 0.40) and C-reactive protein (r = 0.35).

Conclusions:

• Reactive thrombocytosis is a common finding in active pulmonary tuberculosis.
• The observed thrombocytosis is associated with shortened platelet survival, increased aggregation, and elevated thrombopoiesis stimulating activity.
• The degree of thrombocytosis is linked to the severity of inflammation in pulmonary tuberculosis.