Ischemic cardiomyopathy revealed by central retinal artery occlusion (CRAO)
Ischemic cardiomyopathy revealed by central retinal artery occlusion (CRAO)
Ihsen Zairi1,&, Khadija Mzoughi1, Zouhayer Jnifene1, Fethia Ben Moussa1, Sofiene Kammoun1, Sana Fennira1, Nidhal Ben Moussa1, Jihen Brour2, Monia Cheour2, SondosKraiem1
1Department of Cardiology, Habib Thameur public hospital, Bab el Fallah, Tunis, Tunisia, 2Department of Ophthalmology, Habib Thameur public hospital, Bab el Fallah, Tunis, Tunisia
Ihsen Zairi, Department of Cardiology, Habib Thameur public hospital, Bab el Fallah, Tunis, Tunisia
Here we report a case of central retinal artery occlusionrevealing an ischemic cardiomyopathy. A 54-year old smoker man presented at the hospital because of sudden visual loss in his left eye. There was cherry-red spot in the macula in his left eye. We performed a fluorescein angiogram and cervical color Doppler. Later investigations revealed an ischemic cardiomyopathy undiagnosed until then.
Central retinal artery occlusion is a rare but one of the ophthalmological emergency with worse prognosis that causes definite loss of vision within few hours of installation. Assimilated to the ocular analogue of cerebral stroke, it results on impaired functional capacity and quality of life. After initial measures, further investigations are necessaryand can suggest the etiology of the CRAO.
A 54-year-oldmanwasadmittedtoHabib Thameur HospitalbecauseSudden loss of vision in the left eyefrom 12 hours. He is a smoker with nopastmedicalhistory. Cardiovascular exam revealed no abnormalities. Color fundus photograph of the left eye showing acute CRAO with cherry-red spot and cattle trucking of the arteriole (Figure 1). Fundus fluorescein angiography showed adelayedarterial transit time (Figure 2). After 25seconds from injection, there was no distal opacification. 180seconds later, multiple intra-arterial emboli were noticed.Ophthalmologist concluded to a central retinal artery occlusion. After initial management, the patient was referred to cardiology department for further investigations. He revealed a typical stable angina from two months. The EKG showed Antero-septal necrosis (QS from V1 to V3).
Trans-thoracicechocardiogram exam (apical four-chamber view) demonstrated a giant thrombus attached at the left ventricular apex, an impaired left ventricular ejection fraction with an antero-septal akinesis. Supra Aortic Doppler showed no stenosis. Coronary angiography revealed right coronary artery occlusion and a left coronary artery dissection. Patient was referred for a coronary artery bypass graft surgery.Thepostoperative coursewas uneventful and the patient was discharged few days later.
Central retinal artery occlusion is a rare but one of the ophthalmological emergency with worse prognosis that causes definite loss of vision within few hours of installation . The incidence is estimated to be 1 in 100?000 people and accounts for 1 in 10?000 ophthalmological outpatient visits . Assimilated to the ocular analogue of cerebral stroke, it results on impaired functional capacity and quality of life. Central retinal artery occlusionsignifies end-organ ischemia and has the same risk factors that in turn place an individual at risk of future cerebral stroke and ischemic heart disease. Blood supply to the retina originates from the ophthalmic artery.
Typical funduscopic findings of a pale retina with a cherry red macula result from obstruction of blood flow to the retina from the retinal artery, causing pallor, and continued supply of blood to the choroid from the ciliary artery, resulting in a bright red coloration at the thinnest part of the retina. These findings do not develop until an hour or more after embolism, and they resolve within days of the acute event. By this time, visual loss is permanent and primary optic atrophy has developed. In those with a cilioretinal artery supplying the macula, a cherry red spot is not observed.
There is currently no guideline-endorsed evidence for treatment. Therapy optionsinclude sublingual isosorbidedinitrate, systemic pentoxifylline or inhalation of a carbogen, hyperbaric oxygen, ocular massage, globe compression, intravenous acetazolamide and mannitol, anterior chamber paracentesis, and methylprednisolone with no superiority when compared to placebo . There has been recent interest in the use of tissue plasminogen activator (tPA) on the treatment of acute central retinal artery occlusion .
Causes of central retinal artery occlusion vary depending on the age and the riosk factors of the patient. An embolism, atherosclerotic changes, inflammatory endarteritis, angiospasm, or hydrostatic arterial occlusion may occlude the retinal artery. The mechanism of obstruction may be obvious from comorbid systemic disease or physical findings. Atrial fibrillation and ipsilateral carotid stenosis are more commonly associated with prolonged visual disturbances. Varma and al suggested a Vascular Workup for Patients withcentral retinal artery occlusion (Table 1) . 64% of patients suffering a CRAO had at least one new undiagnosed vascular risk factor, the most common being hyperlipidaemia (36%), followed by hypertension (27%) and diabetes (12%) . In addition, 27% of patients had an ipsilateral carotid stenosis of >50%. The result is analogous to another study, which found that 31% of patients had ipsilateral carotid stenosis of >50 and 71% had atherosclerotic plaques. In all, 52% had an abnormal echocardiogram, suggesting a cardioembolic source .
In our case, the etiology was an Embolus from the heart is the most common cause of CRAO in patients younger than 40 years.Emboli to the retinal circulation may originate at any point in the proximal circulation from the heart to the ophthalmic artery .
Ischemic cardiomyopathy is not rare and has the same risk factors that causes systemic vascular disease. Investigating by a cardiovascular examination should be one of the major steps in the Workup for Patients with central retinal artery occlusion.
The authors declare no competing interests.
IZ analyzed and interpreted the patient data regarding the cardiac mass and performed the final review of the manuscript. JZ helped to conduct the review of the literature and made a major contribution to the writing of the manuscript.JB and IZ prescribed tratement and follow up the patient. MC analyzed and interpreted the patient imagining data. JZ translated and reviewed the manuscript. All authors read and approved the final manuscript.
We thank the colleagues and the personnel of Habib Thameur Hospital at who have been of invaluable assistance.
Table 1: suggested vascular workup for patients with central retinal artery occlusion 
Figure 1: colour fundus photograph of the left eye showing acute CRAO with cherry-red spot and cattle trucking of the arterioles
Figure 2: fundus fluoresce in angiography. (A) 25seconds from injection: no distal opacification; (B) 180seconds from injection: multiple intra-arterial emboli with delayed opacification of distal branches
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Tables and figures
|Table 1: suggested vascular workup for patients with central retinal artery occlusion |
|Figure 1: colour fundus photograph of the left eye showing acute CRAO with cherry-red spot and cattle trucking of the arterioles|
|Figure 2: fundus fluoresce in angiography. (A) 25seconds from injection: no distal opacification; (B) 180seconds from injection: multiple intra-arterial emboli with delayed opacification of distal branches|
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