Emergency Department Presentation of Retinal Artery Occlusion.

PURPOSE: To determine how frequently patients who present to an emergency department (ED) with a retinal artery occlusion (RAO) undergo brain imaging and cardiovascular testing and are hospitalized.

DESIGN

Retrospective cross-sectional study.

PARTICIPANTS

Patients who presented to an ED with an RAO in the National Emergency Department Sample (NEDS), a nationally representative United States database.

METHODS

The NEDS was queried to identify patients who presented to an ED with the primary diagnosis of RAO between 2006 and 2014. Patient and hospital characteristics were evaluated, and a multivariable regression was performed to determine predictors of hospitalization. Testing was categorized into 3 groups: (1) brain imaging performed using computed tomography or magnetic resonance; (2) carotid imaging performed using ultrasound, computed tomography, or magnetic resonance; and (3) cardiac testing performed using electrocardiogram or echocardiogram. The number of tests performed for each category was recorded.

MAIN OUTCOME MEASURES: Proportions of patients undergoing brain imaging, carotid imaging, or cardiac testing. Rate and predictors of hospitalization.

RESULTS

Among 259 343 582 ED visits, 2802 had a primary diagnosis of RAO. Patients were mostly aged ≥65 years (59%) and male (54%). Hypertension (59%), dyslipidemia (36%), and diabetes (20%) were the most common preexisting cardiovascular diseases. Brain imaging, carotid imaging, and cardiac testing were performed in 20.3%, 7.1%, and 23.8% of the patients, respectively; at least 1 test from each of these 3 categories was performed in 4.1% of the patients. Half of the patients were hospitalized. Factors that increased the chances of hospitalization included the following (P < 0.05): age of <45 years; female sex; a history of smoking; presenting to a metropolitan hospital and having giant cell arteritis, carotid artery disease, atrial fibrillation, cardiac valve disease, obesity, dyslipidemia, hypertension, diabetes, and chronic ischemic heart disease.

CONCLUSIONS

Most patients who presented to an ED with an RAO did not receive emergency brain imaging, carotid imaging, or basic cardiac testing. A multidisciplinary approach is needed to raise awareness that RAOs should be treated as a precursor of stroke or a stroke equivalent.