In the priority setting of care for a child with cystic fibrosis and a pulmonary infection, what is the most critical finding the nurse must address?

In the context of cystic fibrosis, the most critical finding to address is the child's inability to clear secretions. This condition leads to the accumulation of thick, sticky mucus in the lungs, which can obstruct airways and create an environment conducive to infections. When a child with cystic fibrosis is unable to clear secretions effectively, it significantly increases the risk of respiratory distress and ongoing pulmonary infections.

Addressing this issue is paramount because ensuring the patency of the airways directly influences the child's ability to breathe adequately and manage potential infections. Inability to clear secretions can also lead to further complications such as atelectasis, decreased oxygenation, and the worsening of pulmonary function. Therefore, implementing strategies such as chest physiotherapy or suctioning becomes urgent in this scenario.

While other findings, such as weight loss, difficulty breathing, and high fever, are also important in the overall care of a child with cystic fibrosis, the immediate threat to respiratory function and the heightened risk of complications associated with retained secretions make this issue the top priority for nursing intervention.