A nurse is suctioning the endotracheal tube of a client on mechanical ventilation.
During suctioning, the client's heart rate increases from 86/min to 110/min and becomes irregular. Oxygen saturation drops from 96 What is the priority nursing action?

This scenario requires understanding neurovascular pathophysiology following head trauma. Knowledge of early versus late signs of intracranial pressure is essential to identify neurological deterioration and prevent brain herniation. Clinical assessment focuses on mental status changes and autonomic vital sign stability.

Choice A rationale

Tachycardia is typically not a sign of increased intracranial pressure. Instead, Cushing triad occurs as a late sign, characterized by bradycardia, widened pulse pressure, and irregular respirations as the brainstem undergoes significant compression and ischemia.

Choice B rationale

Amnesia is a common finding following traumatic brain injury due to localized tissue damage or concussion. However, it is a static deficit rather than a dynamic indicator of rising pressure within the rigid cranial vault.

Choice C rationale

Hypotension is not an indicator of increased intracranial pressure. In the Cushing response, the body increases systolic blood pressure to maintain cerebral perfusion pressure against the rising resistance of the swelling brain tissue and cerebrospinal fluid.

Choice D rationale

Restlessness is an early sign of increased intracranial pressure resulting from decreased cerebral oxygenation. As pressure rises, the brain becomes hypoxic, leading to agitation, irritability, and decreased level of consciousness before more severe physical signs manifest.

Understanding the clinical presentation of thermal injuries is necessary to categorize burn depth accurately. This requires knowledge of integumentary layers, including the epidermis, dermis, and subcutaneous tissues, and how specific visual markers like eschar or mottling reflect the level of tissue destruction.

Choice A rationale

First degree burns, or superficial burns, involve only the epidermis. They are characterized by redness, pain, and mild edema without blistering or eschar. The skin remains intact and dry, unlike the mottled red skin and edema seen here.

Choice B rationale

Deep partial thickness burns extend into the deeper layers of the dermis. Findings include a mottled red appearance, moderate edema, and soft, dry eschar. These wounds take longer to heal and usually require surgical intervention for optimal recovery.

Choice C rationale

Superficial partial thickness burns involve the epidermis and upper dermis. They typically present with pink, moist skin and blister formation. The presence of soft eschar and mottled red skin indicates a deeper injury than what is characteristic here.

Choice D rationale

Full thickness burns involve the entire dermis and may reach subcutaneous fat or muscle. The skin appears waxy white, leathery, or charred. While eschar is present, it is usually hard and inelastic rather than soft and mottled.