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# Spontaneous bleeding usually occurs with a platelet count of:

 # Spontaneous bleeding usually occurs with a platelet count of:
A. Less than 50000/mm3
B. 50000-75000/ mm3
C. 75000-100000/ mm3
D. 100000-150000/mm3



The correct answer is: A. Less than 50000/mm3.

Spontaneous bleeding does not usually occur until the platelet count falls below 20 × 109/L, unless their
function is also compromised. Purpura and spontaneous bruising are characteristic but there may also be oral, nasal, gastrointestinal or genitourinary bleeding. Severe thrombocytopenia (< 10 × 109/L) may result in retinal haemorrhage and potentially fatal intracranial bleeding, but this is rare.

Reference: Davidson's Principles and Practice of Medicine, 22nd Edition, Page No. 1008.

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