The ____ is a very long catheter placed within a vein in the antecubital fossa and threaded into the vena cava while under fluoroscopy.

Which of the following metabolic factors can hinder weaning? 1. Excessive carbohydrate feeding 2. Amino acid–based parenteral nutrition 3. Calorie intake = 1.5 ? resting energy expenditure (REE)

a. 2 and 3 only b. 1 and 2 only c. 1, 2, and 3 d. 1 and 3 only

Above what pressure-time index (PTI) will most patients be unable to sustain spontaneous breathing?

a. 0.03 b. 0.05 c. 0.10 d. 0.15