You admitted to the hospital the previous evening a 4-year-old boy who presented with cough，fever，and mild hypoxia. At the time of his admission，he had evidence of a right upper lobe consolidation on his chest radiograph. A blood culture has become positive in less than 24 hours for Staphylococcus aureus. Approximately 20 hours into his hospitalization， the nurse calls you because the child has acutely worsened over the last few minutes， with markedly increased work in breathing and increasing oxygen requirement. As you move swiftly to the childs hospital room，you will order which of the following?
A: A second chest radiograph to evaluate for pneumatocele formation
B: A large-bore needle and chest tube kit for aspiration of a probable tension pneumothorax
C: A change in antibiotics to include gentamicin
D: A sedative to treat the childs attack of severe anxiety
E: A thoracentesis kit to drain his probable pleural effusion