The nurse is caring for a client. For each assessment finding, click to specify if the assessment finding is consistent with pulmonary embolism, pneumonia, or pneumothorax. Each finding may support more than one disease process or none at all. There must be at least 1 selection in every column. There does not need to be a selection in every row.

Rationale for correct choices • Heart sounds: The presence of S3 and S4 heart sounds may indicate right ventricular strain or acute heart failure, which can occur secondary to a massive pulmonary embolism. This finding aligns with increased cardiac workload due to impaired pulmonary circulation. Heart sounds are not typically altered in pneumonia or pneumothorax unless severe cardiac compromise occurs. • Respiratory pattern: Tachypnea and labored breathing can occur in all three conditions. In pulmonary embolism, rapid breathing compensates for hypoxemia. In pneumonia, increased respiratory rate results from impaired gas exchange and inflammation. In pneumothorax, rapid breathing occurs due to decreased lung expansion and oxygenation. • Temperature: Fever (38.9° C/102° F) suggests an infectious process, consistent with pneumonia. Pulmonary embolism and pneumothorax typically do not present with elevated temperature unless secondary infection or inflammatory response is present. • Lung sounds: Bilateral crackles indicate fluid or exudate in the alveoli. In pneumonia, crackles result from consolidation and inflammation. In pulmonary embolism, crackles may reflect pulmonary infarction or edema from right-sided heart strain. Pneumothorax generally produces absent or decreased breath sounds rather than crackles, so crackles are less indicative.