A nurse is assessing the respiratory pattern of an older adult client who is receiving end-of-life care.
Which of the following assessment findings should the nurse identify as Cheyne-Stokes respirations?

Chest tube management requires distinguishing between expected findings and signs of tension pneumothorax. Knowledge of thoracic pressure dynamics and complications is essential. Immediate action is required when anatomical shifts indicate a significant increase in pleural pressure and compromised cardiac output.

Choice A rationale

Intermittent bubbling in the water seal chamber is a normal finding in a client with a pneumothorax. It indicates that air is being evacuated from the pleural space during expiration or coughing and does not require immediate reporting.

Choice B rationale

Mild crepitus, or subcutaneous emphysema, is common near the insertion site as small amounts of air leak into the tissues. While it should be monitored for progression, it is not as urgent as signs of mediastinal shift.

Choice C rationale

Drainage of 75 mL per hour of serosanguineous fluid is generally considered within the acceptable range post thoracotomy. Reporting is typically required if drainage exceeds 100 mL per hour or if the color changes to bright red.

Choice D rationale

This is a classic sign of a tension pneumothorax, a medical emergency. Rapid air accumulation increases intrapleural pressure, pushing the mediastinum and trachea toward the unaffected side, which can lead to rapid obstructive shock and death.

The nurse must apply knowledge of surgical decompression and wound care when explaining procedures to family members. Understanding how eschar restricts blood flow and how surgical incisions relieve pressure is critical for communicating the rationale behind life-saving interventions for severe burns.

Choice A rationale

An escharotomy involves making longitudinal incisions through the thick, leathery, necrotic eschar tissue. This relieves the pressure caused by edema in circumferential burns, restoring distal circulation and preventing compartment syndrome in the affected lower extremities.

Choice B rationale

Showering the client to remove dead tissue describes hydrotherapy or mechanical debridement. While this is part of routine burn care for wound cleansing, it does not address the circulatory emergency that necessitates a surgical escharotomy.

Choice C rationale

Grafting healthy skin onto a burned area is known as an autograft. This procedure is performed later in the recovery phase for wound closure and healing, not as an emergency measure to improve immediate limb circulation.

Choice D rationale

The use of specialized enzymes to remove dead tissue is enzymatic debridement. This chemical process is slower and is used to clean the wound bed, whereas an escharotomy is an immediate surgical intervention to restore perfusion..