Your patient has just had an ABG drawn by the respiratory therapist when you walk into the room and see the patient gasping for air with the SpO2 decreasing.

The patient reports feeling short of breath and having chest pain.

You suspect the patient has an air embolism from the syringe going into the radial artery.

What is your PRIORITY intervention?

Choice A rationale

Placing an NG tube could potentially worsen a basilar skull fracture or cause further injury by penetrating the cranial vault if the cribriform plate is compromised. This intervention is contraindicated when clear fluid, possibly cerebrospinal fluid, is draining from the nose, indicating a potential breach in the dura mater.

Choice B rationale

Testing the clear fluid for the presence of glucose is a critical diagnostic step. Cerebrospinal fluid (CSF) contains glucose, whereas nasal secretions do not. A positive glucose test strongly indicates a CSF leak, which is a significant complication of facial trauma that requires specific management to prevent intracranial infection. Normal CSF glucose ranges from 40 to 70 mg/dL.

Choice C rationale

Encouraging coughing and deep breathing would increase intrathoracic and intracranial pressure, which could exacerbate a CSF leak and potentially introduce pathogens into the intracranial space. This action should be avoided as it poses a risk for further neurological complications such as meningitis.

Choice D rationale

Placing a mustache dressing on the patient might absorb the drainage but does not address the underlying issue of a potential CSF leak. Furthermore, applying pressure or occluding the nares could impede the free flow of CSF, potentially leading to a build-up of pressure and increasing the risk of retrograde infection into the central nervous system.

Choice A rationale

A positive sputum culture definitively identifies the pathogenic microorganisms responsible for the infection within the lungs. This microbiological evidence is crucial for confirming the presence of pneumonia and guiding appropriate antibiotic therapy, distinguishing VAP from other pulmonary issues.

Choice B rationale

A new fever indicates a systemic inflammatory response, often triggered by an infection. In the context of a ventilated patient, a new onset of fever, particularly above 38°C (100.4°F), strongly suggests the presence of a new infection, such as ventilator-associated pneumonia.

Choice C rationale

An SpO2 of 98% indicates excellent oxygen saturation. While desirable, it does not rule out VAP, as patients can initially maintain good oxygenation despite developing an infection, especially if the pneumonia is localized or mild in its early stages.

Choice D rationale

A respiratory rate of 14 breaths per minute is within the normal range. A normal respiratory rate does not indicate the presence or absence of VAP, as patients with early or localized pneumonia might not exhibit significant changes in their respiratory patterns initially.

Choice E rationale

New infiltrates on a Chest X-Ray indicate areas of consolidation or fluid accumulation within the lung tissue. These radiological findings are highly suggestive of pneumonia, as the inflammatory process associated with infection leads to alveolar filling and opacities visible on imaging.