In a patient without active bleeding, prophylactic platelet transfusion is typically indicated when the platelet count falls below:

In a patient without active bleeding, prophylactic platelet transfusion is typically indicated when the platelet count falls below:

• A. 20,000 per microliter
• B. 100,000 per microliter
• C. 10,000 per microliter
• D. 50,000 per microliter

Answer: (C)

Platelets are the key players in stopping bleeding, so when their count gets very low, even without an active bleed, the risk of spontaneous mucosal or intracranial bleeding rises. In this situation, the goal of prophylactic transfusion is to keep enough platelets to maintain hemostasis without waiting for a bleed to occur. The standard threshold used for asymptomatic patients is about 10,000 platelets per microliter. At this level, the risk of spontaneous bleeding becomes significant enough to justify transfusion, while higher thresholds are reserved for situations like planned invasive procedures or higher-risk patients. For example, around 20,000/µL can be used in certain contexts, and 50,000/µL or more is often targeted before procedures with bleeding risk, but routine prophylaxis in a patient without bleeding is centered on the 10,000/µL mark.

Platelets are the key players in stopping bleeding, so when their count gets very low, even without an active bleed, the risk of spontaneous mucosal or intracranial bleeding rises. In this situation, the goal of prophylactic transfusion is to keep enough platelets to maintain hemostasis without waiting for a bleed to occur. The standard threshold used for asymptomatic patients is about 10,000 platelets per microliter. At this level, the risk of spontaneous bleeding becomes significant enough to justify transfusion, while higher thresholds are reserved for situations like planned invasive procedures or higher-risk patients. For example, around 20,000/µL can be used in certain contexts, and 50,000/µL or more is often targeted before procedures with bleeding risk, but routine prophylaxis in a patient without bleeding is centered on the 10,000/µL mark.