Which of the ff vitamins does a client lack if there is a problem with the absorption of calcium?

Correct Answer: D

Rationale: Vitamin D is essential for the absorption of calcium in the body. Without sufficient vitamin D, the absorption of calcium from the diet is impaired, leading to potential issues with calcium deficiency. Vitamin A, B, and C do not have a direct role in the absorption of calcium. Vitamin D helps regulate the amount of calcium and phosphate in the body, which are necessary for bone health, muscle function, and other important processes. Therefore, a lack of Vitamin D can contribute to weakened bones and potential health problems related to calcium deficiency.

Correct Answer: D

Rationale: Epinephrine is a vasoconstrictor, which means it causes blood vessels to narrow. When applied locally to the site of a nosebleed, epinephrine constricts the blood vessels in the nose, slowing down and stopping the bleeding. By constricting the blood vessels, epinephrine helps to reduce the blood flow to the area, allowing a clot to form and stop the bleeding. This is why option D, "It will constrict your vessels and slow down the bleeding," is the best response by the nurse to explain how epinephrine will help treat a nosebleed.

Correct Answer: A

Rationale: An initial sign or symptom of acute bronchitis is a nonproductive cough. This type of cough produces little to no phlegm or sputum. As the condition progresses, the cough may become productive, with the production of thick yellow or green mucus. Other common symptoms of acute bronchitis may include chest discomfort, fatigue, mild fever, and sore throat. Labored breathing is more commonly associated with conditions such as pneumonia or asthma, while anorexia and gastric ulceration are not typically initial signs of acute bronchitis.

Correct Answer: A

Rationale: Warfarin is an anticoagulant medication that works by inhibiting the production of certain clotting factors in the liver, thus prolonging the time it takes for blood to clot. An elevated INR level indicates that the blood is taking longer to clot than desired, potentially putting the patient at risk for bleeding. Vitamin K is the antidote for warfarin because it helps the liver produce these clotting factors, ultimately reversing the effects of warfarin and promoting normal blood clotting. Administering Vitamin K helps lower the INR level and reduce the risk of bleeding in patients on warfarin therapy. Therefore, in this scenario, Vitamin K would be the appropriate antidote to use for the patient with an elevated INR level.

Correct Answer: C

Rationale: In humoral immunity, the activation of B cells is facilitated by helper T cells. Helper T cells play a crucial role in coordinating the immune response by interacting with B cells. They secrete cytokines that stimulate B cells to proliferate and differentiate into antibody-secreting plasma cells. Without the assistance of helper T cells, the activation of B cells and the production of antibodies would be impaired. Cytotoxic T cells are involved in cell-mediated immunity, supressor T cells regulate immune response, and neutrophils are involved in phagocytosis and innate immunity, but they do not directly assist in B cell activation in humoral immunity.