The parents of a child who has been diagnosed with sickle cell anemia ask why their child experiences pain. What is the most likely cause of the pain?

Correct Answer: B

Rationale: The correct answer is B: Obstructed blood flow. In sickle cell anemia, the sickle-shaped red blood cells can clump together, obstructing blood flow in the vessels. This obstruction leads to tissue hypoxia (lack of oxygen) and necrosis, causing pain. Choice A, inflammation of the vessels, is not the primary cause of pain in sickle cell anemia. Choice C, overhydration, is unrelated to the pathophysiology of sickle cell anemia. Choice D, stress-related headaches, is not a characteristic symptom of sickle cell anemia.

Correct Answer: A

Rationale: The correct answer is A: Chest physiotherapy. In cystic fibrosis, chest physiotherapy and aerosol medications are fundamental components of treatment to help clear mucus from the lungs, reduce the risk of infections, and improve breathing. Mucus-drying agents (Choice B) are not typically used in the treatment of cystic fibrosis. Prevention of diarrhea (Choice C) is not a primary focus in the treatment of cystic fibrosis. Insulin therapy (Choice D) is not relevant to cystic fibrosis, as it is a treatment for diabetes.

Correct Answer: C

Rationale: The correct answer is C, 'Faulty dentition.' The older child with cleft lip and palate may experience psychological difficulties due to the cosmetic appearance of the defect, issues with impaired speech, and faulty dentition. This can lead to problems with dental alignment, crowding, missing or malformed teeth, and other dental issues. Choices A, B, and D are incorrect as cognitive impairment, altered growth and development, and physical abilities are not typically considered long-term complications of cleft lip and palate.

Correct Answer: B

Rationale: The hallmark sign of intussusception is currant jelly-like stools, which result from the mixture of blood and mucus in the stool due to the sloughing of intestinal mucosa. Mucus-like stools (Choice A) are not typically associated with intussusception. Tarry, black stools (Choice C) are characteristic of gastrointestinal bleeding higher up in the gastrointestinal tract, such as from a peptic ulcer. Green, soft stools (Choice D) are more indicative of rapid transit through the intestines, possibly due to dietary factors or infections such as gastroenteritis.

Correct Answer: A

Rationale: The correct answer is A: Abduction. The use of the Pavlik harness is to maintain the hips in abduction for 4 to 6 months to treat developmental hip dysplasia. This position helps in stabilizing the hip joint and promoting proper growth and development. Choices B, C, and D are incorrect because the Pavlik harness specifically aims to hold the child's femurs in abduction, not adduction, flexion, or extension.