complete solution 2026
Which event occurs during the expiration phase of ventilation?
A. The diaphragm contracts and pulls down.
B. The diaphragm relaxes and moves up.
C. The thoracic cavity enlarges.
D. The intrathoracic pressure becomes negative. - correct answer ✔B
Assessment may reveal subcutaneous emphysema in a patient with which injury?
A. Laryngeal injury
B. Diaphragmatic injury
C. Hemothorax
D. Tension pneumothorax - correct answer ✔A
The top portion of the thoracic cavity extends from which landmark?
A. Third rib
B. Bottom of the sternum
C. Manubrium
D. Top of the sternum - correct answer ✔D
Autotransfusion after chest tube insertion is contraindicated for which patient?
, A. A patient with religious objections to blood transfusions
B. A patient with immediate chest drainage of 650 mL of blood
C. A patient with chest drainage of 500 mL after 3 hours
D. A patient with a ruptured diaphragm - correct answer ✔D
Which intervention is appropriate for a patient with a flail chest?
A. Prepare for immediate surgical stabilization.
B. Infuse intravenous crystalloids at a rapid rate.
C. Manage pain.
D. Prepare for chest tube insertion. - correct answer ✔C
Which finding is a classic sign of cardiac tamponade?
A. Flat jugular veins
B. Hypertension
C. Muffled heart tones
D. Hemoptysis - correct answer ✔C
Which structure is the three-layered sac that surrounds and protects the heart?
A. Mediastinum
B. Pericardium
C. Visceral pleura