Wood
Carbon monoxide. For understanding the risks of CO exposure it's important to note that the body has no sensors for O2 content of blood, only for partial pressure of O2 (in carotid and aortic bodies). So, exposure to CO causes reduction of functional Hb and drop in O2 content but no drop in PO2 in arterial blood.
Swan Ganz catheter. When balloon is inflated, flow (Q) goes to zero. Since Q = P/R this means that P = 0. P is driving pressure which in this case is Pcatheter tip - Pleft atrium = 0. If this deltaP is 0, then Pcatheter tip = Pleft atrium.
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