RESPIRATORY MCQ

He has a CVL with TPN, and a Swan-Ganz catheter in situ, both for the last 10 days. He is on ceftriaxone for persisting bilateral pulmonary infiltrates and blood cultures to date have been negative. He becomes very unwell and clinically septic, with T° 40, BP 70/50. His blood and urine are sent for culture, and his CXR is unchanged. ................
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