We should not exercise a patient if their platelets are under what?

• A. 50,000
• B. 5,000
• C. 20,000
• D. 10,000

Answer: (D)

The key idea is safety of movement when blood’s ability to clot is severely impaired. Platelets are essential for stopping bleeding, so when their count is very low, even mild activity can trigger or worsen bleeding. At a platelet count under 10,000 per microliter, the risk of spontaneous or exercise-induced bleeding becomes significant enough that any active exercise is avoided. The focus instead is on non-structural therapies and close monitoring until counts improve.

So, while higher low counts (like 20,000 or 5,000) carry bleeding risks too, the threshold used here emphasizes that below 10,000 the safest course is to stop active exercise and limit activity to passive or bedside care, with medical follow-up to address the thrombocytopenia.