A patient is receiving continuous enteral nutrition through a small-bore silicone feeding tube. What should the nurse plan for when this patient has a computed tomography (CT) scan ordered?

Correct Answer: B

Rationale: Rationale: - Correct Answer (B): Shutting off the feeding 30-60 mins before the CT scan reduces the risk of aspiration or vomiting during the procedure, minimizing potential complications. - Incorrect Answer (A): Rescheduling the scan is not necessary if feeding is temporarily stopped before the procedure. - Incorrect Answer (C): Connecting the feeding tube to continuous suction is unnecessary and may lead to dehydration or electrolyte imbalances. - Incorrect Answer (D): Sending a suction catheter with the patient is not a standard practice for CT scans; aspiration risk can be minimized by stopping the feeding temporarily.

Correct Answer: C

Rationale: The correct answer is C: dentin. Dentin is the part of the tooth that closely resembles bone tissue because it is a hard, dense tissue similar to bone in composition and structure, providing support and protection to the tooth. Dentin is located beneath the enamel and cementum, forming the bulk of the tooth structure. Enamel (choice A) is the hardest tissue in the body but is not similar to bone tissue in composition. Cementum (choice B) is a hard tissue covering the roots of teeth but is not as similar to bone tissue as dentin. Gingiva (choice D) is the soft tissue that surrounds the teeth and is not similar to bone tissue.

Correct Answer: A

Rationale: The correct answer is A: cardiac. The cardiac part of the stomach is the region closest to the esophagus where food enters the stomach. It contains the cardiac sphincter, a muscular valve that regulates the passage of food from the esophagus into the stomach. The other choices, pyloric, fundus, and body, are incorrect because the pyloric region connects the stomach to the small intestine, the fundus is the top portion of the stomach, and the body is the main central region of the stomach where most digestion occurs.

Correct Answer: A

Rationale: The correct answer is A: Vitamin C. Vitamin C is water-soluble and not stored in the liver. It gets absorbed in the intestines and any excess is excreted in the urine. Vitamin D (choice B) is fat-soluble and stored in the liver. Vitamin B12 (choice C) is also stored in the liver. Vitamin A (choice D) is fat-soluble and stored in the liver as well. Thus, the correct answer is A as it is the only water-soluble vitamin among the options.

Correct Answer: A

Rationale: The correct answer is A: sinusoids. Sinusoids are specialized blood channels found in the liver that allow for the exchange of nutrients, waste products, and toxins between hepatocytes and blood. They play a crucial role in the liver's functions of detoxification, metabolism, and storage. Central vein (B) is a vessel located in the center of liver lobules, not a blood channel. Hepatic cells (C) refer to the liver cells themselves, not blood channels. Portal veins (D) are vessels that bring blood from the digestive organs to the liver, but they are not the special blood channels within the liver.