[Management of thrombocytopenia]

Area of Science:

• Hematology
• Internal Medicine

Background:

• Thrombocytopenia is defined as a platelet count below 150 G/l.
• A threshold of 100 G/l may be more appropriate for identifying significant thrombocytopenia requiring investigation.

Purpose of the Study:

• To outline diagnostic approaches for thrombocytopenia.
• To identify clinical and biological criteria for urgent referral.

Main Methods:

• Review of medical history and bleeding signs.
• Exclusion of platelet aggregates.
• Assessment for isolated or associated cytopenias and organ abnormalities.

Main Results:

• Medical emergencies requiring referral include active bleeding, disseminated intravascular coagulation, acute renal failure, and platelet counts < 30 G/l (or < 50 G/l with anticoagulation).
• Platelet counts between 30-50 G/l without anticoagulation warrant rapid assessment.
• Counts between 50-100 G/l require outpatient hematology investigation.

Conclusions:

• Thrombocytopenia evaluation involves a systematic approach including history, physical exam, and targeted biological tests.
• Specific platelet count thresholds and clinical signs dictate the urgency of management and referral.