A patient's peripheral parenteral nutrition (PN) bag is nearly empty, and a new PN bag has not arrived yet from the pharmacy. Which intervention by the nurse is appropriate?

Correct Answer: B

Rationale: Correct Answer: B Rationale: 1. Infusing 5% dextrose in water will provide the patient with necessary calories and prevent hypoglycemia until the new PN bag arrives. 2. Dextrose infusion will help maintain glucose levels and prevent metabolic complications. 3. Monitoring capillary blood glucose every 6 hours (Choice A) may not provide immediate support to prevent hypoglycemia. 4. Decreasing the PN infusion rate (Choice D) may lead to inadequate nutrition and compromise patient's metabolic needs.

Correct Answer: B

Rationale: The correct answer is B: third molar. Wisdom teeth are the third molars located at the back of the mouth. They typically erupt in late teens or early twenties. Incisors (A) are front teeth for cutting, second bicuspids (C) help with chewing, and first cuspids (D) are also known as canines for tearing food. The key is understanding dental anatomy and the specific location/function of each tooth type.

Correct Answer: B

Rationale: The correct answer is B: protein. Urea is a waste product formed during the breakdown of proteins in the liver. Amino acids from protein metabolism are deaminated, leading to the formation of ammonia, which is then converted to urea in the urea cycle. Carbohydrates are not directly involved in urea synthesis. Lipids are primarily metabolized to produce energy and do not contribute to urea formation. Nucleic acids are broken down into nucleotides, not amino acids, and are not directly related to urea synthesis.

Correct Answer: B

Rationale: The correct answer is B: villi. Villi are finger-like projections inside the small intestine that increase the surface area for nutrient absorption. They contain blood vessels and lacteals. Microvilli (A) are tiny projections on the surface of villi that further increase surface area. Lacteals (C) are lymphatic vessels within villi that absorb fats. Lumens (D) refer to the inner space of a tubular structure and are not the finger-like extensions inside the small intestine.

Correct Answer: B

Rationale: The correct answer is B: digestion. Digestion is the process of breaking down food into simpler molecules through mechanical and chemical means in the digestive system. It involves the breakdown of complex nutrients into smaller components for absorption. Absorption (A) is the process of taking in nutrients into the bloodstream, not breaking down food. Ingestion (C) is the act of consuming food, not breaking it down. Secretion (D) is the release of enzymes and fluids involved in digestion, not the process of breaking down food itself.