The physician orders the following mechanical ventilation settings for a patient. The patient's spontaneous respiratory rate is 22 breaths/min. What arterial blood gas abnormality may occur if the patient continues to be tachypneic at these ventilator settings?

Settings:

• Tidal volume: 800 mL
• FIO2: 50
• Respiratory rate: 14 breaths/min
• Mode assist/control
• PEEP: 10 cm

Rationale:

A. Clamping a chest tube after lung surgery is contraindicated because it can cause tension pneumothorax or accumulation of blood in the pleural space, worsening respiratory compromise.

B. While close monitoring is important, simply observing does not address the potential life-threatening complication. The amount of blood lost in a short period is concerning and requires immediate reporting and intervention.

C. Loss of 350 ml of blood in the first hour post-op is above expected post-surgical drainage and indicates possible hemorrhage. This is a priority finding because continued bleeding can lead to hypovolemic shock. Prompt communication with the physician is essential to initiate interventions such as fluid resuscitation, blood transfusion, or return to surgery if necessary.

D. Protamine is used to reverse heparin anticoagulation. There is no indication that the patient received heparin, and administering it without cause could be harmful. The priority is to report the hemorrhage and allow the physician to determine appropriate interventions.

Rationale:
A. Assure the patient that everything will be all right and that remaining calm is the best strategy is incorrect because while reassurance is supportive, it does not address the patient’s immediate communication needs, which are causing frustration.

B. Ask a family member to interpret what the patient is trying to communicate is incorrect because family members may not understand the patient’s intended message accurately, which can lead to miscommunication or frustration.

C. Ask the physician to wean the patient off the mechanical ventilator to allow the patient to speak freely is incorrect because weaning must be based on clinical readiness, not solely on communication needs. Premature weaning could compromise patient safety.

D. Express empathy and then encourage the patient to write, use a picture board, or spell words with an alphabet board is correct. These are alternative communication strategies for patients who are intubated or mechanically ventilated. By validating the patient’s feelings and providing tools for nonverbal communication, the nurse reduces frustration and supports patient autonomy and safety. This is considered best practice for facilitating communication in ventilated patients.