Mr. Roberts, a 65-year-old male. presents to the emergency department with sudden onset of severe pain in his right eye. blurred vision, seeing halos around lights, nausea, and vomiting. His right eye is red the cornea appears cloudy, and his intraocular pressure is elevated. What is the most likely diagnosis?
Conjunctivitis
Acute angle-closure glaucoma
Retinal detachment
Migraine with aura
The Correct Answer is B
A. Conjunctivitis. Conjunctivitis generally presents with redness and discharge but does not cause elevated intraocular pressure, severe pain, or visual disturbances like halos.
B. Acute angle-closure glaucoma. Acute angle-closure glaucoma is characterized by sudden severe eye pain, blurred vision, halos around lights, nausea, and vomiting, along with elevated intraocular pressure and a cloudy cornea.
C. Retinal detachment. Retinal detachment may cause sudden vision loss or flashing lights but typically lacks pain, nausea, or vomiting, and does not affect intraocular pressure.
D. Migraine with aura. A migraine with aura may cause visual disturbances but does not present with eye pain, red eye, or elevated intraocular pressure.
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Correct Answer is A
Explanation
A. Administering mannitol intravenously: Mannitol is an osmotic diuretic that helps reduce ICP by drawing fluid out of brain tissue and decreasing cerebral edema, making it a priority intervention.
B. Encouraging the patient to hyperventilate: Controlled hyperventilation may reduce ICP temporarily by lowering CO₂ levels and causing cerebral vasoconstriction. However, it should only be done cautiously under close monitoring, and other ICP management techniques like mannitol administration take priority.
C. Administering a high-dose corticosteroid: Corticosteroids are generally ineffective for reducing ICP in traumatic brain injury and are typically not recommended in this scenario.
D. Performing a lumbar puncture immediately: Lumbar puncture is contraindicated in cases of increased ICP because it may lead to brain herniation due to the sudden release of pressure.
Correct Answer is C
Explanation
A. Administering pain medication: Pain management is essential, but in this case, the primary concern is potential airway compromise due to inhalation injury, which should be addressed first.
B. Applying a cool, wet cloth to burned areas: Cooling burned areas can help with pain and reduce burn severity but is not the priority in a case of suspected inhalation injury with airway compromise.
C. Administering high-flow oxygen via a non-rebreather mask: This client is at high risk for respiratory compromise due to inhalation injury; administering high-flow oxygen is the priority to ensure adequate oxygenation.
D. Initiating intravenous fluid resuscitation: Fluid resuscitation is essential for burn patients but is not the immediate priority over addressing potential airway and oxygenation issues.