A nurse is caring for a client who sustained blunt trauma to the eye and has been diagnosed with hyphema. Which nursing intervention is the priority?

Elevating the head of bed 30-45 degrees with strict bed rest is priority to promote drainage and prevent rebleeding in hyphema. Other interventions like ice packs or eye drops are secondary.

Understanding Hyphema and the Rationale for Priority Intervention

The priority nursing intervention for a client with a traumatic hyphema is to elevate the head of the bed to 30-45 degrees and maintain strict bed rest. This intervention directly addresses the fundamental goals of acute management: promoting the settling of blood in the anterior chamber and preventing rebleeding, which is the most significant complication.

When blunt trauma occurs, blood vessels in the iris or ciliary body rupture, causing red blood cells to accumulate in the anterior chamber. This collection of blood is the hyphema ^[1]. The immediate physiological concern is twofold. First, the blood cells can obstruct the trabecular meshwork, the eye's primary drainage system, leading to a rapid elevation in intraocular pressure (IOP). As noted in the literature, a transient elevation in IOP is a known complication that can progress to secondary glaucoma and optic nerve damage if not mitigated ^[1]. Second, the initial clot that stops the bleeding is fragile. A secondary hemorrhage, or rebleed, typically occurs 3 to 5 days after the initial injury, is often more severe, and carries a much higher risk of permanent vision loss due to corneal blood staining and uncontrolled glaucoma ^[1].

Elevating the head of the bed to 30-45 degrees uses gravity to promote inferior settling of the blood in the anterior chamber. This creates a fluid level, or "layering," which serves two critical functions. It clears the visual axis more quickly, and, most importantly, it facilitates the drainage of aqueous humor through the unblocked superior portion of the trabecular meshwork, thereby lowering the risk of elevated IOP. Strict bed rest minimizes movement, reducing the risk of dislodging the fragile clot and precipitating a rebleed. This combination of positioning and activity restriction is the cornerstone of conservative therapy to prevent the vision-threatening complications of glaucoma and corneal blood staining ^[1].

The other options are not the priority and can be detrimental. Applying ice packs may provide comfort but does not address the critical internal dynamics of IOP control and rebleed prevention. Encouraging frequent eye movements is contraindicated because it can disrupt the clot and increase the risk of rebleeding. While administering prescribed topical medications, such as cycloplegics or corticosteroids, is an important nursing function, it is not the initial, non-pharmacological priority action. The immediate, independent nursing action that establishes the physiological environment for healing and complication prevention is proper positioning and strict bed rest ^[1].