A nurse is caring for a client with hyphema following blunt trauma to the eye. Which nursing intervention should be the priority?

Elevating the head of bed promotes blood settling and prevents rebleeding, which is critical in hyphema management. Other options like ice packs, mydriatics, or eye movements are not priority and may increase risk.

Understanding Hyphema and the Priority Nursing Intervention

When a client presents with a hyphema, which is an accumulation of blood in the anterior chamber of the eye, the immediate nursing priority is to prevent rebleeding and reduce the risk of vision-threatening complications. The correct intervention is to elevate the head of the bed to 30-45 degrees and maintain strict bed rest.

Pathophysiology and Clinical Rationale

A hyphema most commonly results from blunt trauma that tears the blood vessels of the iris or ciliary body, causing blood to pool in the anterior chamber ^[1]. The primary danger in the initial days following the injury is a secondary hemorrhage, or rebleed, which typically occurs 3 to 5 days after the initial trauma. A rebleed is often more severe than the original bleed and dramatically increases the risk of two serious complications: elevated intraocular pressure (IOP) leading to glaucoma and corneal blood staining, which can cause permanent vision loss ^[1].

The priority nursing actions are directly aimed at facilitating the settling of blood and preventing rebleeding. Elevating the head of the bed to 30-45 degrees uses gravity to help the red blood cells settle inferiorly, away from the trabecular meshwork. This settling is crucial because it clears the visual axis and, more importantly, unblocks the eye's drainage system, helping to keep the IOP within a safe range. Strict bed rest minimizes the risk of sudden movement, Valsalva maneuvers, and any activity that could increase IOP and dislodge the fragile clot, precipitating a secondary hemorrhage.

Analysis of Incorrect Options

- Option 2: Apply ice packs to the affected eye for 20 minutes every hour. While applying a cold compress can help with periorbital edema and provide some comfort, it does not address the core pathophysiological risk of rebleeding and elevated IOP. It is a comfort measure, not the priority intervention for preventing vision loss.
- Option 3: Instill prescribed mydriatic eye drops to dilate the pupil. Mydriatic drops dilate the pupil, which stretches the already torn iris vessels and can pull the clot away from the injury site. This action can directly precipitate a secondary hemorrhage. Cycloplegic drops, not mydriatics, are sometimes used to paralyze the ciliary muscle for pain relief from ciliary spasm, but pupil dilation is generally avoided in the acute phase of hyphema.
- Option 4: Encourage frequent eye movements to prevent blood clot formation. This action is contraindicated. The goal is to protect the formed clot to prevent rebleeding. Encouraging eye movement would mechanically stress the clot and the injured vessels, significantly increasing the likelihood of a secondary hemorrhage.

The foundational principle in hyphema management is to create an environment that allows the injured vessels to heal and the clot to stabilize. Elevating the head of the bed and enforcing strict rest are the cornerstone nursing interventions that directly support this physiological goal and prevent the complications of glaucoma and corneal blood staining highlighted in the clinical evidence ^[1].