Correct Answer: A

Rationale: The bacterial glycocalyx is a sticky, gelatinous substance that surrounds the bacterial cell wall. It helps protect the bacteria from antibiotic and immunologic destruction by forming a barrier that prevents antibiotics and immune cells from effectively reaching and eliminating the bacterial infection. This protection allows the bacteria to persist and cause persistent infections, even when antibiotics are administered through the catheter.

Correct Answer: A

Rationale: Colloids, such as albumin and synthetic colloids like hydroxyethyl starch, do not enhance the oxygen-carrying capacity of the blood. They can help to increase the intravascular volume in cases of hypovolemia by osmotically drawing fluid into the intravascular space. This can help improve tissue perfusion by increasing blood pressure. Colloids do not have a direct effect on oxygen-carrying capacity or coagulation properties. Dextran therapy can cause adverse effects like anaphylaxis or renal failure, but it is not a general contraindication for all colloid administration in the treatment of hypovolemia.

Correct Answer: D

Rationale: High-density lipoproteins (HDLs) are often referred to as the "good cholesterol" because they help remove excess cholesterol from the bloodstream back to the liver for processing and excretion. Higher levels of HDL cholesterol are associated with a reduced risk of coronary artery disease and other cardiovascular diseases. A higher HDL level is considered beneficial for heart health, while lower levels are associated with an increased risk of heart disease. Monitoring HDL cholesterol levels is important in the management of coronary artery disease and assessing cardiovascular risk.

Correct Answer: B

Rationale: Furosemide belongs to the sulfonamide drug class. Physicians commonly prescribe furosemide for its diuretic effects in conditions like heart failure, hypertension, and edema. It is crucial for the nurse to assess the patient for allergies to sulfonamides before administering furosemide due to the potential for cross-reactivity between these drugs. Allergies to sulfonamides can lead to severe reactions, such as skin rashes, itching, and in rare cases, anaphylaxis. By identifying any potential allergies, the nurse can prevent adverse reactions and ensure patient safety.

Correct Answer: C

Rationale: The nurse should suggest the patient mix the cholestyramine powder with food or fruit, or at least 4 to 6 ounces of fluid. Cholestyramine is a medication that works by binding with bile acids in the intestine, which requires mixing the powder with a sufficient amount of fluid to ensure proper administration. Mixing the powder with 4 to 6 ounces of fluid or food will help prevent clumping and ensure optimal effectiveness of the medication. Mixing it with a carbonated soda drink (option
A) may not be ideal as the effervescence could affect the medication's stability. Adding the powder to any liquid and stirring vigorously (option
B) may not effectively dissolve the powder. Taking the powder dry followed by a glass of water (option E) may also not be as effective in ensuring proper administration as when mixed with food or fluid.