CDR Enteral and Parenteral Nutrition 2

Question 1

A patient receiving continuous enteral nutrition through a PEG tube develops diarrhea. Which intervention should be tried FIRST?

Accepted Answer

Slow the infusion rate and check for infectious causes

Answer

The first step is to slow the infusion rate and evaluate for infectious causes (such as C. difficile), medication-related causes, or formula intolerance before changing formula type or route.

Question 2

Which amino acid becomes conditionally essential during severe metabolic stress such as critical illness or major surgery?

Accepted Answer

Glutamine

Answer

Glutamine becomes conditionally essential during critical illness because demand exceeds endogenous production; it serves as the primary fuel for enterocytes and immune cells and helps maintain gut barrier integrity.

Question 3

What is the recommended protein goal (g/kg/day) for a critically ill adult patient without renal failure receiving nutrition support?

Accepted Answer

1.2–2.0 g/kg/day

Answer

ASPEN and SCCM guidelines recommend 1.2–2.0 g/kg/day of protein for critically ill adults to support wound healing, immune function, and minimize lean muscle loss during hypermetabolism.

Question 4

Which method of enteral nutrition delivery is most appropriate for a patient who cannot tolerate bolus feedings due to delayed gastric emptying?

Accepted Answer

Continuous infusion over 24 hours

Answer

Continuous infusion delivers formula at a slow, steady rate around the clock, minimizing the volume in the stomach at any given time and reducing risk of aspiration and intolerance in patients with delayed gastric emptying.

Question 5

A TPN solution containing dextrose, amino acids, and lipids in a single bag is called:

Accepted Answer

Total nutrient admixture (TNA) or 3-in-1 solution

Answer

A total nutrient admixture (TNA), also called a 3-in-1 or all-in-one solution, combines dextrose, amino acids, and lipid emulsion in a single bag for convenient administration.

CDR - Commission on Dietetic Registration Exam Practice Test

CDR - Commission on Dietetic Registration Exam Practice Test

CDR Enteral and Parenteral Nutrition 2