Pediatric HESI 2024

Correct Answer: D

Rationale: The classification system of congenital heart defects into acyanotic or cyanotic defects is problematic because children with acyanotic heart defects may develop cyanosis, complicating the differentiation. Cyanosis can occur in some acyanotic defects due to various reasons such as right-to-left shunting or decreased pulmonary blood flow, making the classification based solely on cyanosis misleading. Choice A is incorrect because while the classification may involve hemodynamics, the main issue lies in the potential for acyanotic defects to develop cyanosis. Choice B is incorrect as the ease of identifying children with cyanotic defects does not address the main problem with the classification system. Choice C is also incorrect as the presence of cyanosis is not the only factor determining the classification's validity.

Correct Answer: C

Rationale: In this scenario, asking about the gestational age is crucial as it helps determine the stage of labor and potential complications. Knowing the number of weeks of gestation can guide the healthcare provider in assessing the progress of labor and making decisions about the care of both the mother and the baby. Choices A, B, and D are not as relevant in this urgent situation. While knowing if the bag of waters has broken is important for assessing the progress of labor, determining gestational age is more critical at this point. Asking about regular prenatal care or the number of other children does not provide immediate information necessary for managing the current situation.

Correct Answer: B

Rationale: The correct way to prevent tinea pedis is by keeping the feet dry, especially between the toes, to decrease the risk of fungal infection. Choice A is incorrect as keeping the feet moist can promote fungal growth. Choice C is incorrect because nylon or synthetic socks can trap moisture, contributing to the growth of fungi. Choice D is incorrect as going barefoot in public, especially in areas like locker rooms, increases the risk of contracting tinea pedis.

Correct Answer: A

Rationale: The correct answer is A: 'Mental retardation occurs if PKU is untreated.' Phenylketonuria (PKU) is a metabolic disorder that results in the inability to metabolize phenylalanine properly. Without proper dietary management, high levels of phenylalanine can lead to severe mental retardation and other neurological problems. Therefore, educating parents about the importance of early and consistent treatment to prevent mental retardation is crucial. Choice B is incorrect because testing for PKU is typically done shortly after birth, not immediately. Choice C is incorrect because treatment for PKU primarily involves strict dietary management to control phenylalanine intake, not lifelong medications. Choice D is incorrect because PKU is inherited in an autosomal recessive pattern, not as an autosomal dominant gene.

Correct Answer: C

Rationale: Visible peristalsis and weight loss are classic clinical manifestations of pyloric stenosis. The obstruction at the pyloric sphincter causes visible peristalsis as the stomach tries to push food through the narrowed opening, leading to the appearance of waves across the abdomen. Weight loss occurs due to poor feeding and frequent vomiting associated with pyloric stenosis. Choices A, B, and D are incorrect. Abdominal rigidity and pain on palpation, rounded abdomen and hypoactive bowel sounds, as well as distention of the lower abdomen and constipation are not typically seen in pyloric stenosis.