Iron is absorbed in:

Correct Answer: D

Rationale: Iron is primarily absorbed in the duodenum, the first part of the small intestine. The duodenum is where iron is released from food and converted into a form that can be absorbed by the body. The acidic environment in the stomach helps to break down iron-containing compounds, but actual absorption occurs in the duodenum. The ileum and jejunum are also parts of the small intestine, but they are not the primary sites of iron absorption. The stomach is involved in initial digestion but not in the absorption of iron. Therefore, the correct answer is D, the duodenum.

Correct Answer: C

Rationale: Rationale: Antibiotics are ineffective in treating irritable bowel syndrome because IBS is not caused by bacterial infections. IBS is a functional disorder of the digestive system. Antibiotics do not target the underlying causes of IBS such as altered gut motility or visceral hypersensitivity. Therefore, using antibiotics to treat IBS would not address the root of the problem and would be ineffective. Other choices are incorrect because antibiotics are not the primary treatment for IBS, they are not used for pain relief in IBS, and there is no age restriction for prescribing antibiotics in IBS treatment.

Correct Answer: D

Rationale: The correct first nursing action is to apply an ice pack and compression dressings to the knee. This is to reduce swelling and control bleeding in the affected area, which is crucial for a client with hemophilia. Initiating an IV site for cryoprecipitate or type and cross-matching for transfusion may be necessary later, but the priority is to manage the immediate swelling and bleeding. Monitoring vital signs can wait until the initial intervention of addressing the knee swelling is done. This choice helps stabilize the client's condition and prevent further complications.

Correct Answer: D

Rationale: The correct answer is D: Performing a rectal examination. This should be avoided in a child with leukemia at risk for bleeding because it can increase the risk of rectal trauma and bleeding. Stool softeners (choice A) are appropriate to prevent constipation and straining. Frequent position changes (choice B) help prevent pressure ulcers. Visits with friends and siblings (choice C) are important for the child's emotional well-being.

Correct Answer: B

Rationale: The priority nursing diagnosis for a client with DIC experiencing decreased oxygen saturation is Impaired Gas Exchange (B). This is because impaired gas exchange directly affects oxygenation, which is crucial for tissue perfusion and overall patient well-being. Addressing gas exchange will help improve oxygen saturation levels and prevent further complications. Pain (A) is important but not the priority in this case. Ineffective Tissue Perfusion (C) is related but secondary to impaired gas exchange. Anxiety (D) is also important but addressing oxygenation takes precedence for immediate patient safety.