Which platelet count range indicates a risk for prolonged bleeding from trauma or surgery?

Which platelet count range indicates a risk for prolonged bleeding from trauma or surgery?

• A. 5,000-8,000
• B. 50,000-80,000
• C. 100,000-120,000
• D. 150,000-200,000

Answer: (B)

Platelets are essential for the initial formation of the hemostatic plug after vessel injury. A normal platelet count is about 150,000 to 450,000 per microliter. When the count falls into the 50,000 to 80,000 range, there aren’t enough platelets to rapidly and reliably form a stable plug after trauma or during surgical bleeding, so bleeding tends to be prolonged. Counts this low still may not cause spontaneous bleeding at rest, but they compromise hemostasis in situations with tissue injury, making bleeding harder to control. In contrast, a count as low as 5,000 to 8,000 is severe thrombocytopenia with a high risk of spontaneous bleeding and requires urgent intervention; counts in the 100,000–120,000 or 150,000–200,000 ranges are within or above normal hemostatic levels, where bleeding risk is minimal during trauma or surgery.

Platelets are essential for the initial formation of the hemostatic plug after vessel injury. A normal platelet count is about 150,000 to 450,000 per microliter. When the count falls into the 50,000 to 80,000 range, there aren’t enough platelets to rapidly and reliably form a stable plug after trauma or during surgical bleeding, so bleeding tends to be prolonged. Counts this low still may not cause spontaneous bleeding at rest, but they compromise hemostasis in situations with tissue injury, making bleeding harder to control.

In contrast, a count as low as 5,000 to 8,000 is severe thrombocytopenia with a high risk of spontaneous bleeding and requires urgent intervention; counts in the 100,000–120,000 or 150,000–200,000 ranges are within or above normal hemostatic levels, where bleeding risk is minimal during trauma or surgery.