A nurse is caring for a child who is experiencing an acute asthma attack. Which of the following medications should the nurse administer first?

A. Machine-like murmur:

A machine-like murmur typically refers to a continuous murmur, which can be heard throughout systole and diastole. While machine-like murmurs can be associated with certain cardiac conditions, such as patent ductus arteriosus (PDA), they are not typically heard in coarctation of the aorta. In coarctation of the aorta, a systolic ejection murmur may be heard over the upper left sternal border due to turbulent blood flow across the narrowed aortic segment.

B. Severe cyanosis:

Cyanosis refers to a bluish discoloration of the skin and mucous membranes due to decreased oxygenation of the blood. While cyanosis can occur in various congenital heart defects, such as tetralogy of Fallot, it is not a characteristic manifestation of coarctation of the aorta. Coarctation of the aorta typically results in decreased blood flow to the lower extremities rather than mixing of oxygenated and deoxygenated blood.

C. Decreased blood pressure in the legs:

This is the correct choice. Coarctation of the aorta is characterized by narrowing of the aorta, which leads to decreased blood flow to the lower extremities. Consequently, blood pressure measurements in the legs may be lower compared to those in the arms. This finding is often a key indicator of coarctation of the aorta.

D. Pulmonary edema:

Pulmonary edema refers to the accumulation of fluid in the lungs and is typically associated with conditions such as heart failure or fluid overload. While some congenital heart defects may lead to heart failure and subsequent pulmonary edema, coarctation of the aorta does not directly cause pulmonary edema. Instead, it primarily affects blood flow to the lower extremities due to the narrowing of the aorta.

A. Allow the child to see and touch IV tubing and supplies.

Allowing the child to see and touch the IV tubing and supplies can help familiarize them with the equipment and reduce anxiety. However, there may be a more appropriate action to take first.

B. Explain to the child's parents what role they will have during the procedure.

While it's important to involve the child's parents and inform them of their role during the procedure, the priority should be to prepare the child for the insertion itself.

C. Describe the procedure using visual aids.

Using visual aids can be helpful in explaining the procedure to the child and providing a clear understanding of what will happen. However, there may be a more appropriate action to take first.

D. Ask the child what he knows about the procedure.

This is the correct answer. Asking the child what they already know about the procedure allows the nurse to assess their understanding and address any misconceptions or concerns they may have. It also helps the nurse tailor their explanation to the child's level of understanding and provide information that is relevant and meaningful to them.