How can central venous access devices (CVADs) be of value in a patient receiving chemotherapy who has stomatitis and severe diarrhea?

Correct Answer: D

Rationale: Central venous access devices (CVADs) can be of value in a patient receiving chemotherapy who has stomatitis and severe diarrhea by allowing concentrated hyperalimentation fluid to be administered through the CVAD. Stomatitis and severe diarrhea can significantly affect oral intake and absorption of nutrients, leading to malnutrition and dehydration. By administering concentrated hyperalimentation fluid through a CVAD, the patient can receive the necessary nutrition and hydration directly into the bloodstream, bypassing the gastrointestinal tract. This can help maintain the patient's nutritional status and manage dehydration effectively during chemotherapy treatment.

Correct Answer: B

Rationale: Levodopa is absorbed via an active transport mechanism using amino acid transporters, allowing it to cross the blood-brain barrier for its therapeutic effect.

Correct Answer: C

Rationale: The fundamental action of drugs that can be used as a substitute for what is lacking in the body falls under the category of Replacement. In medical terms, replacement therapy is a type of treatment that involves replacing a hormone or other important substance that is deficient or lacking in the body. For example, individuals with hypothyroidism are often prescribed levothyroxine as a replacement therapy to make up for the thyroid hormone deficiency in their body. Similarly, insulin is used to replace the deficient insulin in individuals with diabetes. Therefore, when drugs are administered to compensate for a deficiency or lack of a specific substance in the body, they are categorized under the fundamental action of Replacement.

Correct Answer: B

Rationale: Propranolol, a beta-blocker, prevents migraines but requires consistent use'stopping if migraines cease risks rebound, showing a teaching gap. Pulse checking monitors bradycardia. Tiredness and orthostasis are expected. Abrupt cessation can worsen migraines, critical in prophylaxis where steady-state matters, making B the statement needing correction.

Correct Answer: D

Rationale: Antilipemic therapy is used to lower cholesterol levels in the blood. This type of therapy often places a strain on the liver as it metabolizes and processes the cholesterol-lowering medications. Therefore, patients receiving antilipemic therapy are at an increased risk of developing liver dysfunction. The nurse should monitor the patient closely for signs and symptoms of liver dysfunction, such as jaundice, abdominal pain, nausea, vomiting, and changes in liver function tests. Early detection and intervention can help prevent serious complications associated with liver dysfunction.