A school nurse is assessing a child who fell from playground equipment and landed head-first. Which of the following manifestations should the nurse recognize as indicating the presence of increased intracranial pressure?

A. Coarctation of the aorta

Coarctation of the aorta involves a narrowing of the aorta, leading to decreased blood flow to the lower body. It is not associated with increased pulmonary blood flow.

B. Patent ductus arteriosus

Patent ductus arteriosus (PDA) is a congenital heart defect where the ductus arteriosus, a fetal blood vessel that usually closes shortly after birth, remains open. This allows blood to flow from the aorta into the pulmonary artery, increasing pulmonary blood flow. Therefore, option B is correct.

C. Tetralogy of Fallot

Tetralogy of Fallot is a congenital heart defect characterized by four abnormalities, including a ventricular septal defect (VSD), pulmonary stenosis, right ventricular hypertrophy, and an overriding aorta. While it can lead to cyanosis due to right-to-left shunting, it is not primarily associated with increased pulmonary blood flow.

D. Tricuspid atresia

Tricuspid atresia involves the absence of the tricuspid valve, leading to a lack of direct blood flow from the right atrium to the right ventricle. It usually presents with decreased pulmonary blood flow rather than increased pulmonary blood flow.

A. "Reye syndrome causes fatty changes in the liver."

This statement is correct. Reye syndrome is characterized by acute non-inflammatory encephalopathy and fatty changes in the liver, which can lead to liver dysfunction and failure.

B. "Reye syndrome leads to venous thrombus formation."

This statement is incorrect. Reye syndrome primarily affects the brain and liver, leading to cerebral edema and liver dysfunction. It does not typically involve venous thrombus formation.

C. "Reye syndrome is associated with misuse of acetaminophen."

This statement is incorrect. While the exact cause of Reye syndrome is not fully understood, it is not associated with the misuse of acetaminophen. However, there is a well-established association between Reye syndrome and the use of aspirin (salicylates) during viral infections, particularly in children and adolescents.

D. "Reye syndrome is linked to decreased serum ammonia levels."

This statement is incorrect. Reye syndrome is associated with increased serum ammonia levels due to liver dysfunction and impaired ammonia metabolism. Elevated ammonia levels can contribute to the encephalopathy seen in Reye syndrome.