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Parenteral Nutrition

Chapter 100. Parenteral Nutrition

Which one of the following is an appropriate indication for PN?

A. Severe malnutrition with a functional GI tract

B. Intentional weight loss

C. Fluid and electrolyte deficits

D. Short-bowel syndrome

E. Well-nourished patient, NPO × 3 days

Which of the following commercially available concentrations of IV lipid emulsions is FDA approved ONLY for infusion in a TNA (ie, should not be directly infused into the patient or via Y-site)?

A. 2%

B. 10%

C. 15%

D. 20%

E. 30%

What is the maximum recommended osmolarity for a PN admixture that is administered via a peripheral vein (ie, peripheral PN, or PPN)?

A. 300 mOsm/L

B. 500 mOsm/L

C. 900 mOsm/L

D. 1500 mOsm/L

E. 2000 mOsm/L

Which of the following is an advantage of TNAs (total nutrient admixtures) over 2-in-1 PN formulations?

A. Stability is improved with TNAs.

B. Visual inspection is easier with TNAs.

C. A 0.22- micronbacterial retention filter may be used with TNAs.

D. A greater number of medications are compatible with TNAs.

E. Vein irritation is decreased with TNAs.

Which of the following actions will INCREASE the likelihood of calcium-phosphate precipitation in PN admixtures?

A. Refrigerating the PN bag

B. Use of calcium chloride as the calcium salt

C. Separating the addition of calcium and phosphate salts when compounding

D. Decreasing the pH of the PN solution

E. All of the above

Which of the following is a potential advantage of standardized, commercially available (premixed) PN formulations available in the United States?

A. They contain high concentrations of amino acids.


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