During auscultation of the lungs and heart, which finding is described?

• A. Breath sounds are diminished on the right, and heart sounds are normal.
• B. Breath sounds are clear and equal bilaterally, and heart sounds are normal.
• C. Breath sounds clear but asymmetrical, and heart sounds muffled.
• D. Breath sounds absent, heart sounds normal.

Answer: (B)

A clear and equal set of breath sounds with normal heart sounds reflects a lung and heart that are not currently affected by acute thoracic injury. When lung sounds are audible and equal on both sides, it suggests there isn’t a pneumothorax, significant contusion, or large effusion compromising ventilation. Normal heart sounds indicate there’s no evident impact on cardiac function such as tamponade or major injury that would muff or alter the heart sounds. In trauma assessment, this combination is reassuring and points to stable cardiopulmonary status at the moment of exam.

If breath sounds were diminished on one side, that could signal a pneumothorax or hemothorax on that side. Muffled heart sounds would raise concern for pericardial tamponade or a large pericardial effusion. Clear but asymmetrical breath sounds might reflect a localized airway issue or minor injury, while absent breath sounds would be a red flag for life-threatening conditions like tension pneumothorax or massive collapse.