01. The answer is: c. 94%. When resources are available to titrate the Fio2 and to monitor oxyhemoglobin saturation, it is reasonable to decrease the Fio2 when oxyhemoglobin saturation is 100%, provided the oxyhemoglobin saturation can be maintained at 94% or greater.
02. The incorrect answer is: c. During cardiac arrest, it may be used to detect increasing intrathoracic pressures.
03. The answers are: b. Epinephrine 0.1–0.5 mcg/kg/min (In 70-kg adult, 7–35 mcg/min) and d. Dopamine 5–10 mcg/kg/min. Both epinephrine and dopamine have alpha and beta adrenergic properties which will improve the heart rate and blood pressure. Norepinephrine and Phenylephrine have mostly alpha adrenergic properties which will improve the blood pressure. Dobutamine has beta adrenergic properties which will increase myocardial contractility.
04. The answer is: d. 45 – 55 mm Hg. Avoid excess ventilations. Begin at 1- - 12 breaths/min and titrate to a target PETCO2 of 35 – 45 mm Hg. Maintain FIO@ to a minimum to achieve SPO2 ≥ 94%
05. The answers are: a. Epinephrine 0.1 – 0.5 mgc/kg/min (7 – 35 mcg/min), b. Dopamine 5 – 10 mcg/kg/min, and d. Norepinephrine 0.1 – 0.5 mcg/kg/min (7 – 35 mcg/min). These are titrated to maintain a SBP over 90 mm Hg or a MAP over 65 mm Hg.