MSFinals-2043

MSFinals-2043

A 75-year-old woman who is in hospital for pneumonia begins to deteriorate on her third day of intravenous antibiotics. She develops purple bruises on her skin and on the inside of her mouth, and tells you that she feels short of breath and fatigued. Her platelet count has dropped from 165 × 109/l to 43 × 109/l over the last two days. She also complains of blurred vision in the last few hours.
Which of the following will form part of her initial management?