Correct Answer: B

Rationale: Abdominal rigidity and pain on palpation are not typical signs of pyloric stenosis. Pyloric stenosis usually presents with non-bilious projectile vomiting, a palpable olive-shaped mass in the upper abdomen, and signs of dehydration. A rounded abdomen and hypoactive bowel sounds are characteristic signs of pyloric stenosis. The hypertrophied pyloric muscle obstructs the passage of food from the stomach to the duodenum, leading to gastric distention, visible peristalsis, and vomiting. The infant may appear hungry after vomiting and will continue to feed, leading to weight loss. Visible peristalsis and weight loss are consistent with pyloric stenosis. The visible peristalsis occurs as the infant tries to force the stomach contents through the narrowed pyloric sphincter. Weight loss is a result of poor feeding and vomiting. Distention of the lower abdomen and constipation are not typical findings in pyloric stenosis. Constipation suggests a lower gastrointestinal issue, while pyloric stenosis primarily affects the upper gastrointestinal tract.

Correct Answer: C

Rationale: Administering syrup of ipecac is not recommended in cases of iron overdose. Ipecac was once used to induce vomiting in cases of poisoning, but it is no longer recommended due to potential complications and lack of evidence for effectiveness. Giving the child orange juice will not help in this situation. While vitamin C can enhance iron absorption, it does not have an effect on iron that has already been absorbed into the body. Contacting the poison control center is the appropriate action. They can provide immediate advice on what to do in cases of potential iron overdose. Providing a high-carbohydrate snack will not help in this situation. It will not affect the absorption or toxicity of the iron.

Correct Answer: A

Rationale: Tinea Capitis, also known as scalp ringworm, is primarily transmitted through direct contact with infected personal items such as towels, combs, or hats. Exposure to worm eggs through bare feet is not a mode of transmission for Tinea Capitis. This is more commonly associated with a different type of parasitic infection known as hookworm. Sitting on worm eggs is not a mode of transmission for Tinea Capitis. This is a misconception and there is no scientific evidence to support this claim. Airborne droplet transmission is not a mode of transmission for Tinea Capitis. Tinea Capitis is caused by a type of fungus, not a virus or bacteria, and it does not spread through the air via droplets.

Correct Answer: B

Rationale: It is not advisable for a parent to attempt to reinsert the tubes if they fall out. This could potentially cause harm to the child's ear. If the tubes fall out, the parent should call the healthcare clinic to report this. The healthcare provider can then decide on the appropriate next steps. It is not accurate to reassure the mother that the tubes will not fall out. Tympanostomy tubes are designed to fall out on their own after a certain period of time. Taking the child to an emergency department is not necessary unless there are signs of infection or other complications.

Correct Answer: A

Rationale: The child weighs 22 lb, which is approximately 10 kg (since 1 kg is approximately 2.2 lb). The prescribed dose of acetaminophen is 10 mg/kg.
Step 1 is: Calculate the total dose of acetaminophen for the child. This is done by multiplying the child's weight in kg by the prescribed dose in mg/kg. 10 kg×10 mg/kg=100 mg The available acetaminophen liquid is 160 mg/5 mL.
Step 2 is: Calculate the volume of acetaminophen liquid to administer. This is done by setting up a proportion with the total dose of acetaminophen and the concentration of the available liquid. x mL100 mg=5 mL160 mg Solving for x gives: x=160 mg mg×5 mL=3.125 mL
Therefore, the nurse should administer approximately 3.125 mL of the acetaminophen liquid.