A nurse is caring for a 2-month-old infant who is postoperative following surgical repair of a cleft lip. Which of the following actions should the nurse take?

A patent ductus arteriosus (PDA) is a congenital heart defect associated with increased pulmonary blood flow. In normal fetal circulation, the ductus arteriosus allows blood to bypass the lungs since the baby receives oxygen from the mother's placenta. After birth, the ductus arteriosus should close, redirecting blood flow to the lungs for oxygenation. However, in some infants with PDA, the ductus arteriosus remains open, causing an abnormal connection between the aorta and the pulmonary artery. As a result, oxygenated blood from the aorta flows back into the pulmonary artery, increasing the workload on the lungs.

The other options are as follows:
A. Coarctation of the aorta - Coarctation of the aorta is a narrowing of the aorta, which obstructs blood flow and leads to increased blood pressure in the upper body and reduced blood flow to the lower body.
C. Tetralogy of Fallot - Tetralogy of Fallot is a combination of four heart defects that results in decreased pulmonary blood flow due to a ventricular septal defect (VSD), overriding aorta, pulmonary stenosis, and right ventricular hypertrophy.
D. Tricuspid atresia - Tricuspid atresia is a congenital heart defect where the tricuspid valve does not develop correctly, resulting in an absent or abnormal tricuspid valve. This defect prevents blood flow from the right atrium to the right ventricle and, therefore, reduces pulmonary blood flow.

Following a cardiac catheterization, the nurse should provide the parent with appropriate discharge instructions to ensure the child's proper recovery. The correct instruction to include is option B: "Give the child acetaminophen for discomfort."

Explanation:

Option A: Offering the child clear liquids for the first 24 hours is not a typical instruction following a cardiac catheterization. After the procedure, the child may be allowed to resume a regular diet, as tolerated, based on the healthcare provider's orders.

Option B: This is the correct instruction. After cardiac catheterization, the child may experience some discomfort at the insertion site or the area where the catheter was threaded through the blood vessels. Acetaminophen can be used to manage mild pain or discomfort.

Option C: Taking a tub bath for the first 3 days is not typically mentioned in discharge instructions after a cardiac catheterization. The nurse might advise the parent to avoid submerging the catheter insertion site in water for a specific period and instead use sponge baths until permitted by the healthcare provider.

Option D: Keeping the child home for 1 week is not a standard recommendation for a cardiac catheterization. The recovery period after a cardiac catheterization is usually shorter, and the child can often resume normal activities within a day or two, depending on the specific circumstances of the procedure and the child's condition.

The nurse should thoroughly review the specific discharge instructions provided by the healthcare provider and ensure the parent understands the care required at home, including any restrictions on activities or signs of potential complications that require immediate attention.