In assessing a 2-year-old boy with croup, the practical nurse (PN) finds that he has become increasingly irritable and has developed tachypnea and resting stridor. Which intervention is best for the PN to implement?

Troponin I and CK-MB are cardiac enzymes that are released into the bloodstream when the heart muscle is injured or necrotic. Elevated levels of these enzymes indicate that the client has suffered a myocardial infarction (MI) or heart atack. The damaged heart tissue can impair the electrical conduction system of the heart and cause abnormal heart rhythms or dysrhythmias, which can be life-threatening. The PN should monitor the client's cardiac status closely and report any changes to the charge nurse.

The other options are not correct because:

1. The client is not at risk for pulmonary embolism, which is a blockage of a pulmonary artery by a blood clot or other material. Pulmonary embolism does not cause elevated cardiac enzymes, but it can cause chest pain, shortness of breath, and hypoxia.
2. The client is not at risk for recurrent long-term angina pain, which is chest pain caused by reduced blood flow to the heart muscle due to narrowed or blocked coronary arteries. Angina pain does not cause elevated cardiac enzymes, but it can be a warning sign of an impending MI.
3. The lab results do not indicate risk factors for transient ischemic atack (TIA), which is a temporary interruption of blood flow to a part of the brain due to a clot or plaque. TIA does not cause elevated cardiac enzymes, but it can cause neurological symptoms such as weakness, numbness, or speech difficulties.

A) Correct- Continuous monitoring of oxygen saturation ensures the client's oxygen levels remain within an acceptable range.
B) Incorrect - Discussing aggressive respiratory treatment options is not warranted based on the provided information. The current treatment plan includes appropriate interventions.
C) Incorrect - Obtaining a sputum culture is important for identifying infections, but it's not an immediate action in the context of the client's current symptoms.
D) Correct- Promoting comfort can help reduce anxiety and potentially improve breathing.
E) Correct- Educating the client about potential triggers supports better self-management.
F) Incorrect - Considering positive pressure ventilation is not indicated at this stage. The client's symptoms are being managed with other interventions.
G) Incorrect - Weaning supplemental oxygen is not mentioned in the patient data or nurses' notes as something that's currently necessary.
H) Incorrect - Preparing for deep tracheal suctioning is not warranted based on the patient data and the current treatment plan.