A patient has been ordered the powdered form of the bile acid sequestrant colestipol. Which of the following does the nurse identify as true?

Correct Answer: D

Rationale: The correct statement is that the colestipol should be administered 1 hour before or 4 to 6 hours after any other oral medication. Bile acid sequestrants like colestipol can bind to other medications, reducing their absorption and effectiveness. Therefore, they should be taken separately from other medications to prevent any interactions. Additionally, colestipol should ideally be administered with meals to improve tolerability and adherence, although this was not one of the options given in the question.

Correct Answer: A

Rationale: When taking digoxin, low levels of potassium can cause an increased risk of digoxin toxicity. This is because digoxin and potassium compete for binding sites on the sodium-potassium pump in cardiac cells. Low potassium levels can lead to enhanced binding of digoxin to these pumps, resulting in increased concentrations of digoxin within the cells and potential toxicity. Therefore, it is important to monitor potassium levels regularly while taking digoxin to prevent complications.

Correct Answer: D

Rationale: Packed red blood cells (PRBCs) always require cross-matching with the recipient to prevent a transfusion reaction. Cross-matching is crucial for PRBCs because they contain red blood cells with antigens on their surface that may react with antibodies in the recipient's plasma, potentially causing a transfusion reaction. Cross-matching involves testing the compatibility of donor red blood cells with the recipient's plasma to ensure a safe transfusion. Other blood products like granulocytes, platelets, and plasma do not contain red blood cells and, therefore, do not require cross-matching.

Correct Answer: C

Rationale: Lithium is primarily used to stabilize mood and prevent manic episodes in individuals with bipolar disorder. It is a mood-stabilizing medication that helps to lessen the severity and frequency of manic episodes. Lithium is not used to lower blood glucose, slow the heart rate, or heal ulcers. It is important to follow the prescribed dosage and have regular monitoring of lithium levels in the blood to ensure its effectiveness and prevent toxicity.

Correct Answer: A

Rationale: Warfarin is an anticoagulant medication that works by inhibiting the body's ability to clot blood. While it is an effective medication for preventing blood clots and strokes, one of its major complications is the increased risk of bleeding. This can manifest as easy bruising, nosebleeds, bleeding gums, or more serious internal bleeding in organs such as the stomach or brain. Cramps, fever, and nausea are not common complications of Warfarin use.