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Huntley GD, Michelena HI, Thaden JJ, Alkurashi AK, Pislaru SV, Pochettino A, Crestanello JA, Maleszewski JJ, Brown RD, Nkomo VT. Cerebral and Retinal Infarction in Bicuspid Aortic Valve. J Am Heart Assoc 2023; 12:e028789. [PMID: 36942747 PMCID: PMC10122894 DOI: 10.1161/jaha.122.028789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Background Description of cerebral and retinal infarction in patients with bicuspid aortic valve (BAV) is limited to case reports. We aimed to characterize cerebral and retinal infarction and examine outcomes in patients with BAV. Methods and Results Consecutive patients from 1975 to 2015 with BAV (n=5401) were retrospectively identified from the institutional database; those with confirmed cerebral or retinal infarction were analyzed. Infarction occurring after aortic valve replacement was not included. Patients were grouped according to infarction pathogenesis: embolism from a degenerative calcific BAV (BAVi); non-BAV, large artery atherosclerotic or lacunar infarction (LAi); and non-BAV, non-large artery embolic infarction (nLAi). There were 83/5401 (1.5%) patients, mean age 54±12 years and 28% female, with confirmed cerebral or retinal infarction (LAi 23/83 [28%]; nLAi 30/83 [36%]; BAVi 26/83 [31%]; other 4/83 [5%]). Infarction was embolic in 72/83 (87%), and 35/72 (49%) were cardioembolic. CHA2DS2-VASc score was 1.4±1.2 in BAVi (P=0.188 versus nLAi) and 2.3±1.2 in LAi (P=0.005). Recurrent infarction occurred in 41% overall (50% BAVi, P=0.164 and 0.803 versus LAi and nLAi). BAVi was more commonly retinal (39% BAVi versus 13% LAi, P=0.044 versus 0% nLAi, P=0.002). Patients with BAVi and LAi were more likely to have moderate-to-severe aortic stenosis and undergo aortic valve replacement compared with patients with nLAi. Conclusions Cardioembolism, often from degenerative calcification of the aortic valve, is a predominant cause of cerebral and retinal infarction in patients with BAV and is frequently recurrent. Cerebral and retinal infarction should be regarded as a complication of BAV.
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Affiliation(s)
| | | | - Jeremy J Thaden
- Department of Cardiovascular Medicine Mayo Clinic Rochester MN
| | | | - Sorin V Pislaru
- Department of Cardiovascular Medicine Mayo Clinic Rochester MN
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Ørskov M, Vorum H, Larsen TB, Skjøth F. Evaluation of Risk Scores as Predictive Tools for Stroke in Patients with Retinal Artery Occlusion: A Danish Nationwide Cohort Study. TH OPEN : COMPANION JOURNAL TO THROMBOSIS AND HAEMOSTASIS 2022; 6:e429-e436. [PMID: 36632285 PMCID: PMC9713298 DOI: 10.1055/s-0042-1758713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 09/28/2022] [Indexed: 12/03/2022]
Abstract
Purpose We investigated the 1-year risk of stroke in patients with retinal artery occlusion and evaluated the predictive and discriminating abilities of contemporary risk stratification models for embolic stroke. Methods This register-based cohort study included 7,906 patients with retinal artery occlusion from Danish nationwide patient registries between 1995 and 2018. The study population was stratified according to the number of points obtained in the stroke risk scores: the CHA 2 DS 2 -VASc score and the ESSEN Stroke Risk score. The 1-year risk of stroke within strata was evaluated and compared using the cox proportional hazards model. Furthermore, the discrimination of the risk scores as predictive tools for stroke risk assessment was investigated using C-statistics, Brier score, and the index of prediction accuracy. Results The stroke event rate in patients with retinal artery occlusion increased as the score increased for both risk scores, ranging from 3.62 (95% confidence interval [CI]: 2.46-5.31) per 100 person-years to 13.25 (95% CI: 11.78--14.89) per 100-person-years for increasing levels of the CHA 2 DS 2 -VASc score and from 3.97 (95% CI: 2.97-5.32) per 100 person-years to 16.43 (95% CI: 14.01-19.27) per 100 person-years for increasing levels of the ESSEN Stroke Risk score. Using a risk score of 0 as a reference, the difference was statistically significant for retinal artery occlusion patients with a CHA 2 DS 2 -VASc score of 2 or above and for all levels of the ESSEN Stroke Risk score. The C-statistics for the risk scores was 61% (95% CI: 58%-63%) and 62% (95% CI: 59-64%) for the CHA 2 DS 2 -VASc score and ESSEN Stroke Risk score, respectively. Conclusion The results suggested that the use of the CHA 2 DS 2 -VASc score and the ESSEN Stroke Risk score was applicable for risk stratification of stroke in patients with retinal artery occlusion, but discrimination was poor due to low specificity.
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Affiliation(s)
- Marie Ørskov
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark,Department of Clinical Medicine, Aalborg Thrombosis Research Unit, Faculty of Health, Aalborg University, Aalborg, Denmark,Address for correspondence Marie Ørskov, MSc Aalborg Thrombosis Research Unit and Department of Cardiology, Aalborg University HospitalAalborg, Denmark; Hobrovej 18-22, DK-9000 AalborgDenmark
| | - Henrik Vorum
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark
| | - Torben Bjerregaard Larsen
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark,Department of Clinical Medicine, Aalborg Thrombosis Research Unit, Faculty of Health, Aalborg University, Aalborg, Denmark
| | - Flemming Skjøth
- Department of Clinical Medicine, Aalborg Thrombosis Research Unit, Faculty of Health, Aalborg University, Aalborg, Denmark,Unit for Clinical Biostatistics, Aalborg University Hospital, Aalborg, Denmark
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Multani EK, Bajwa D, Multani PK, Nobakht E, Raj D, Paul RS, Paul RS. EYE DISEASE IN KIDNEY TRANSPLANTATION: CLINICAL CHALLENGES IN A UNIQUE PATIENT POPULATION. Surv Ophthalmol 2021; 67:1252-1269. [PMID: 34954092 DOI: 10.1016/j.survophthal.2021.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 11/30/2022]
Abstract
Eye disease is common among kidney transplant recipients and their management is challenging. Chronic kidney disease is associated with ocular complications, both independently and in the context of various systemic disorders. In addition, chronic immunosuppression predisposes kidney transplant recipients to an array of long-term ocular issues. This may be broadly categorized into infections, malignancies, and other immunosuppression-specific side effects. The interdependence of kidney disease, transplant pharmacotherapy and ocular health therefore requires a multispecialty approach. Although the kidney transplant population has grown along with the burden of associated oculopathies, systematic guidelines targeting this patient group are lacking. This evidenced-based narrative review summarizes the pertinent issues that may present in the ophthalmic and optometric clinical settings, with emphasis on collaborative management and directions for future research.
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Affiliation(s)
- Eisha K Multani
- MY EYE DR OPTOMETRISTS LLC, 1330 CONNECTICUT AVE NW, WASHINGTON DC, 20037, UNITED STATES
| | - Dalvir Bajwa
- THE NEWCASTLE UPON TYNE HOSPITALS, NHS FOUNDATION TRUST, ROYAL VICTORIA INFIRMARY, QUEEN VICTORIA ROAD, NEWCASTLE UPON TYNE NE1 4LP, UNITED KINGDOM
| | - Priyanika K Multani
- INLAND VISION CENTER OPTOMETRY, 473 E CARNEGIE DR, SUITE 100, SAN BERNADINO, CA 92408
| | - Ehsan Nobakht
- DIVISION OF KIDNEY DISEASE & HYPERTENSION, GEORGE WASHINGTON UNIVERSITY, 2150 PENNSYVANIA AVENUE, SUITE 3-438, WASHINGTON DC, 20037, UNITED STATES
| | - Dominic Raj
- DIVISION OF KIDNEY DISEASE & HYPERTENSION, GEORGE WASHINGTON UNIVERSITY, 2150 PENNSYVANIA AVENUE, SUITE 3-438, WASHINGTON DC, 20037, UNITED STATES
| | - Rohan S Paul
- DIVISION OF KIDNEY DISEASE & HYPERTENSION, GEORGE WASHINGTON UNIVERSITY, 2150 PENNSYVANIA AVENUE, SUITE 3-438, WASHINGTON DC, 20037, UNITED STATES
| | - Rohan S Paul
- DIVISION OF KIDNEY DISEASE & HYPERTENSION, GEORGE WASHINGTON UNIVERSITY, 2150 PENNSYVANIA AVENUE, SUITE 3-438, WASHINGTON DC, 20037, UNITED STATES.
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Roskal-Wałek J, Wałek P, Biskup M, Odrobina D, Mackiewicz J, Głuszek S, Wożakowska-Kapłon B. Central and Branch Retinal Artery Occlusion-Do They Harbor the Same Risk of Further Ischemic Events? J Clin Med 2021; 10:jcm10143093. [PMID: 34300257 PMCID: PMC8307136 DOI: 10.3390/jcm10143093] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 12/22/2022] Open
Abstract
Purpose: Retinal artery occlusion (RAO) is associated with an increased risk of cardiovascular events such as ischemic stroke and myocardial infarction, but whether different RAO subtypes such as central retinal artery occlusion (CRAO) or branch retinal artery occlusion (BRAO) carry similar risk of these events is unclear. Our aim was to determine whether the risk of cardiovascular events differs between CRAO and BRAO. Methods: This single-center, retrospective study included 131 patients hospitalized in our clinic in 2010–2020 with CRAO or BRAO confirmed by ophthalmic examination. Data on demographics, previous ischemic stroke and myocardial infarction, comorbidities, the results of echocardiographic and ultrasound carotid artery examinations and laboratory tests were assessed. Data on ischemic stroke, myocardial infarction, and all-cause mortality occurring after RAO were obtained from the Polish National Health Service, which collects data on all publicly funded hospitalizations. Using these data, Kaplan-Meier analyses and Cox proportional hazard regression were performed. Results: Ischemic stroke occurred in 9.9% of patients after RAO: 10.6% in the CRAO group and 8.1% in the BRAO group (p = 0.662). Myocardial infarction occurred in 2.3% of patients after RAO: 2.1% in the CRAO group and 2.7% in the BRAO group (p = 0.843). All-cause mortality occurred in 22.9% of patients after RAO: 25.5% in the CRAO group and 16.2% in the BRAO group (p = 0.253). The composite endpoint of ischemic stroke, myocardial infarction, and all-cause mortality after RAO occurred in 28.2% of patients: 30.9% in the CRAO group and 21.6% in the BRAO group (p = 0.338). There was no difference between CRAO and BRAO in median time to ischemic stroke (32 vs. 76.4 months; p = 0.352), all-cause mortality (35.9 vs. 36.3 months; p = 0.876) or composite endpoint (37.5 vs. 41.5 months; p = 0.912) after RAO. The Kaplan-Meier analysis showed no differences between CRAO and BRAO in ischemic stroke, myocardial infarction, all-cause mortality, or the composite endpoint; similar results were obtained in analyses of patients with and without cardiovascular events before RAO. Conclusions: The prognosis for ischemic stroke, myocardial infarction, and all-cause mortality is similar in patients with CRAO and BRAO. Ischemic strokes occur with a similar frequency before and after RAO. Myocardial infarctions are observed significantly more frequently before an episode of RAO than after. The results of our study indicate that both CRAO and BRAO require expanded diagnostics to assess the risk of recurrent cardiovascular events, especially ischemic strokes, to implement appropriate prophylaxis and reduce mortality.
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Affiliation(s)
- Joanna Roskal-Wałek
- Collegium Medicum, The Jan Kochanowski University, 25-317 Kielce, Poland; (P.W.); (D.O.); (S.G.); (B.W.-K.)
- Ophthalmology Clinic, Voivodeship Regional Hospital, 25-736 Kielce, Poland;
- Correspondence: ; Tel.: +48-413-671-440; Fax: +48-413-671-510
| | - Paweł Wałek
- Collegium Medicum, The Jan Kochanowski University, 25-317 Kielce, Poland; (P.W.); (D.O.); (S.G.); (B.W.-K.)
- 1st Clinic of Cardiology and Electrotherapy, Swietokrzyskie Cardiology Centre, 25-736 Kielce, Poland
| | - Michał Biskup
- Ophthalmology Clinic, Voivodeship Regional Hospital, 25-736 Kielce, Poland;
| | - Dominik Odrobina
- Collegium Medicum, The Jan Kochanowski University, 25-317 Kielce, Poland; (P.W.); (D.O.); (S.G.); (B.W.-K.)
- Ophthalmology Clinic Boni Fratres Lodziensis, 93-357 Łódź, Poland
| | - Jerzy Mackiewicz
- Department of Vitreoretinal Surgery, Medical University of Lublin, 20-079 Lublin, Poland;
| | - Stanisław Głuszek
- Collegium Medicum, The Jan Kochanowski University, 25-317 Kielce, Poland; (P.W.); (D.O.); (S.G.); (B.W.-K.)
- Oncological, Endocrinological and General Surgery Clinic, Voivodeship Regional Hospital, 25-736 Kielce, Poland
| | - Beata Wożakowska-Kapłon
- Collegium Medicum, The Jan Kochanowski University, 25-317 Kielce, Poland; (P.W.); (D.O.); (S.G.); (B.W.-K.)
- 1st Clinic of Cardiology and Electrotherapy, Swietokrzyskie Cardiology Centre, 25-736 Kielce, Poland
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Neurologic complications of nonrheumatic valvular heart disease. HANDBOOK OF CLINICAL NEUROLOGY 2021; 177:33-41. [PMID: 33632451 DOI: 10.1016/b978-0-12-819814-8.00003-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Valvular heart disease (VHD) is frequently associated with neurologic complications. Cerebral embolism is the most common, since thrombus formation results from the abnormalities in the valvular surfaces and the anatomic and physiologic changes associated with valve dysfunction, including atrial or ventricular enlargement, intracardiac thrombi, and cardiac dysrhythmias. Prosthetic heart valves, particularly mechanical valves, are very thrombogenic, which explains the high risk of thromboembolism and the need for long-term anticoagulation. Transcatheter aortic valve replacement (TAVR) has emerged as a nonoperative alternative to surgical aortic valve replacement for patients with intermediate or high surgical risk, and the procedure also has a risk of cerebral ischemia. In addition, anticoagulation, the mainstay of treatment to prevent cerebral embolism, has known potential for hemorrhagic complications. The emergence of new oral anticoagulants with similar effectiveness to warfarin and a better safety profile has facilitated the management of patients with atrial fibrillation. However, their application in patients with mechanical heart valves is still evolving. The prevention and management of these complications requires an understanding of their natural history to balance the risks posed by valvular heart disease, as well as the risks and benefits associated with the treatment.
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Sanghi P, Malik M, Hossain IT, Manzouri B. Ocular Complications in the Prone Position in the Critical Care Setting: The COVID-19 Pandemic. J Intensive Care Med 2020; 36:361-372. [PMID: 32985317 DOI: 10.1177/0885066620959031] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE Ocular complications are common in the critical care setting but are frequently missed due to the focus on life-saving organ support. The SARS-CoV-2 (COVID-19) pandemic has led to a surge in critical care capacity and prone positioning practices which may increase the risk of ocular complications. This article aims to review all ocular complications associated with prone positioning, with a focus on challenges posed by COVID-19. MATERIALS AND METHODS A literature review using keywords of "intensive care", "critical care", "eye care", "ocular disorders", "ophthalmic complications," "coronavirus", "COVID-19," "prone" and "proning" was performed using the electronic databases of PUBMED, EMBASE and CINAHL. RESULTS The effects of prone positioning on improving respiratory outcomes in critically unwell patients are well established; however, there is a lack of literature regarding the effects of prone positioning on ocular complications in the critical care setting. Sight-threatening ophthalmic disorders potentiated by proning include ocular surface disease, acute angle closure, ischemic optic neuropathy, orbital compartment syndrome and vascular occlusions. CONCLUSIONS COVID-19 patients may be more susceptible to ocular complications with increased proning practices and increasing demand on critical care staff. This review outlines these ocular complications with a focus on preventative and treatment measures to avoid devastating visual outcomes for the patient.
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Affiliation(s)
- Priyanka Sanghi
- Department of Ophthalmology, Barking Havering and Redbridge University Hospitals NHS Trust, 156727Queens Hospital, Romford, UK
| | - Mohsan Malik
- Department of Ophthalmology, Barking Havering and Redbridge University Hospitals NHS Trust, 156727Queens Hospital, Romford, UK
| | - Ibtesham T Hossain
- Department of Ophthalmology, Barking Havering and Redbridge University Hospitals NHS Trust, 156727Queens Hospital, Romford, UK
| | - Bita Manzouri
- Department of Ophthalmology, Barking Havering and Redbridge University Hospitals NHS Trust, 156727Queens Hospital, Romford, UK
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Kim YD, Kim YK, Yoon YE, Yoon CH, Park KH, Woo SJ. Association of Retinal Artery Occlusion with Subclinical Coronary Artery Disease. J Korean Med Sci 2019; 34:e286. [PMID: 31726494 PMCID: PMC6856299 DOI: 10.3346/jkms.2019.34.e286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/19/2019] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND To evaluate the association between retinal artery occlusion (RAO) and subclinical coronary artery disease (CAD). METHODS We studied 41 patients with non-arteritic RAO without any history or symptoms of CAD, who had undergone coronary computed tomographic angiography (CCTA) for systemic atherosclerotic evaluation between 2007 and 2012. The age- and gender-matched control group comprised 4-fold subjects who were randomly selected from asymptomatic subjects who underwent CCTA during general health evaluation. Medical records and CCTA findings were compared between RAO patients and control groups. Multiple logistic regression analysis was carried out to assess the risk factors associated with CAD. RESULTS Cardiovascular risk factors were not significantly different between RAO patients and control groups. RAO patients showed higher coronary artery calcium score than did control subjects (267.9 ± 674.9 vs. 120.2 ± 289.5). On CCTA, the prevalence of obstructive CAD (diameter stenosis ≥ 50%) in RAO patients was significantly higher than that in controls (29% vs. 15%; odds ratio [OR], 3.0). RAO patients demonstrated a significantly higher segment-involvement score (SIS) (2.6 ± 3.0 vs. 1.6 ± 2.4) and segment-stenosis score (SSS) (3.6 ± 4.8 vs. 2.0 ± 3.3) than did controls. After adjustment of associated factors, RAO showed significant association (OR, 3.0) with obstructive CAD and extensive CAD (SIS > 4: OR, 2.8; SSS > 8: OR, 3.4). CONCLUSION Patients with RAO had a higher prevalence of subclinical obstructive CAD with a more extensive and heavier burden of coronary artery plaques than did age- and gender-matched controls. Physicians should understand the potential risk of CAD in RAO patients.
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Affiliation(s)
- Yong Dae Kim
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Yong Kyu Kim
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Yeonyee E Yoon
- Department of Cardiology, Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Chang Hwan Yoon
- Department of Cardiology, Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
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Hong JH, Sohn SI, Kwak J, Yoo J, Ahn SJ, Woo SJ, Jung C, Yum KS, Bae HJ, Chang JY, Jung JH, Lee JS, Han MK. Retinal artery occlusion and associated recurrent vascular risk with underlying etiologies. PLoS One 2017; 12:e0177663. [PMID: 28570629 PMCID: PMC5453434 DOI: 10.1371/journal.pone.0177663] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 05/01/2017] [Indexed: 11/25/2022] Open
Abstract
Background and purpose RAO is caused by various etiologies and subsequent vascular events may be associated with underlying etiologies. Our aim is to investigate the etiologies of RAO, the occurrence of subsequent vascular events and their association in patients with RAO. Methods We analyzed data from 151 consecutive patients presenting with acute non-arteritic RAO between 2003 and 2013 in a single tertiary-care hospital. The primary outcome was the occurrence of a vascular event defined as stroke, myocardial infarction, and vascular death within 365 days of the RAO onset. The Kaplan-Meier survival analysis and Cox proportional hazard model were used to estimate the hazard ratio of the vascular events. Results Large artery atherosclerosis (LAA) was the etiology more frequently associated with of RAO (41.1%, 62/151). During the one year follow-up, ischemic stroke and vascular events occurred in 8.6% and 9.9% of patients, respectively. Ten vascular events occurred in RAO patients attributed to LAA and 4 occurred in undetermined etiology. RAO patients with LAA had a nearly four times higher risk of vascular events compared to those without LAA (hazard ratio 3.94, 95% confidence interval 1.21–12.81). More than a half of all events occurred within one month and over three fourths of ischemic strokes occurred ipsilateral to the RAO. Conclusion After occurrence of RAO, there is a high risk of a subsequent vascular event, particularly ipsilateral stroke, within one month. LAA is an independent factor for the occurrence of a subsequent vascular event. Management for the prevention of secondary vascular events is necessary in patients with RAO especially with LAA. Large clinical trials are needed to confirm these findings.
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Affiliation(s)
- Jeong-Ho Hong
- Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Sung-Il Sohn
- Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Jaehyuk Kwak
- Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Joonsang Yoo
- Department of Neurology, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Seong Joon Ahn
- Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, Korea
| | - Se Joon Woo
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Cheolkyu Jung
- Department of Radiology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Kyu Sun Yum
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Hee-Joon Bae
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Jun Young Chang
- Department of Neurology, Gyengsang national university Changwon Hospital, Changwon, Korea
| | - Jin-Heon Jung
- Department of Critical care medicine & Neurology, Dong-A University Hospital, Busan, Korea
| | - Ji Sung Lee
- Clinical Trial Center, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
| | - Moon-Ku Han
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
- * E-mail:
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Fraser-Bell S, Symes R, Vaze A. Hypertensive eye disease: a review. Clin Exp Ophthalmol 2017; 45:45-53. [DOI: 10.1111/ceo.12905] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 12/07/2016] [Accepted: 12/14/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Samantha Fraser-Bell
- Save Sight Institute, Sydney University; Sydney New South Wales Australia
- Sydney Adventist Hospital Clinical School; Sydney University; Sydney New South Wales Australia
- Sydney Eye Hospital; Sydney New South Wales Australia
| | - Richard Symes
- Save Sight Institute, Sydney University; Sydney New South Wales Australia
- Sydney Eye Hospital; Sydney New South Wales Australia
| | - Anagha Vaze
- Save Sight Institute, Sydney University; Sydney New South Wales Australia
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Cardiovascular Risk Factors in Central Retinal Artery Occlusion: Results of a Prospective and Standardized Medical Examination. Ophthalmology 2015; 122:1881-8. [PMID: 26231133 DOI: 10.1016/j.ophtha.2015.05.044] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 11/21/2022] Open
Abstract
PURPOSE To analyze the underlying risk factors in patients with nonarteritic central retinal artery occlusion (CRAO) in a well-defined and homogenous group of patients enrolled in the European Assessment Group for Lysis in the Eye (EAGLE) study. DESIGN Analysis of the cardiovascular risk factors in a prospective, randomized clinical trial. PARTICIPANTS Seventy-seven EAGLE patients with nonarteritic CRAO. METHODS Analysis of vascular risk factors and underlying diseases detected by questionnaire and standardized physical examination within 1 month after occlusion. MAIN OUTCOME MEASURES The standardized physical examination included carotid Doppler ultrasonography, echocardiography, electrocardiography, blood pressure monitoring, pulse rate, urine analysis, body mass index analysis, and laboratory tests. RESULTS Seventy-seven of 84 patients had complete datasets for analysis. Fifty-two (67%) patients had cardiovascular risk factors in their medical history, and comprehensive phenotyping identified at least 1 new risk factor in 60 patients (78%; 95% confidence interval, 67%-87%). Thirty-one (40%) had carotid artery stenosis of at least 70%. Eleven patients experienced a stroke, 5 of those within 4 weeks after the CRAO occurred. Arterial hypertension was found in 56 (73%) patients and was newly diagnosed in 12 (16%) study participants. Cardiac diseases were also highly prevalent (22% coronary artery disease, 20% atrial fibrillation, and 17% valvular heart disease). CONCLUSIONS Previously undiagnosed vascular risk factors were found in 78% of all CRAO patients. The most meaningful risk factor was ipsilateral carotid artery stenosis. A comprehensive and prompt diagnostic work-up is mandatory for all CRAO patients.
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Valsalva retinopathy and branch retinal artery occlusion after cardiopulmonary cerebral resuscitation. Am J Emerg Med 2014; 32:1293. [DOI: 10.1016/j.ajem.2014.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 08/01/2014] [Indexed: 11/22/2022] Open
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Cruz-Flores S. Neurologic complications of valvular heart disease. HANDBOOK OF CLINICAL NEUROLOGY 2014; 119:61-73. [PMID: 24365289 DOI: 10.1016/b978-0-7020-4086-3.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Valvular heart disease (VHD) is frequently associated with neurologic complications; cerebral embolism is the most common of these since thrombus formation results from the abnormalities in the valvular surfaces or from the anatomic and physiologic changes associated with valve dysfunction, such as atrial or ventricular enlargement, intracardiac thrombi, and cardiac dysrhythmias. Prosthetic heart valves, particularly mechanical valves, are very thrombogenic, which explains the high risk of thromboembolism and the need for anticoagulation for the prevention of embolism. Infective endocarditis is a disease process with protean manifestations that include not only cerebral embolism but also intracranial hemorrhage, mycotic aneurysms, and systemic manifestations such as fever and encephalopathy. Other neurologic complications include nonbacterial thrombotic endocarditis, a process associated with systemic diseases such as cancer and systemic lupus erythematosus. For many of these conditions, anticoagulation is the mainstay of treatment to prevent cerebral embolism, therefore it is the potential complications of anticoagulation that can explain other neurologic complications in patients with VHD. The prevention and management of these complications requires an understanding of their natural history in order to balance the risks posed by valvular disease itself against the risks and benefits associated with treatment.
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Affiliation(s)
- Salvador Cruz-Flores
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA.
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13
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Patel PS, Sadda SR. Retinal Artery Obstructions. Retina 2013. [DOI: 10.1016/b978-1-4557-0737-9.00051-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Grixti A, Sadri M, Datta AV. Uncommon ophthalmologic disorders in intensive care unit patients. J Crit Care 2012; 27:746.e9-22. [PMID: 22999481 DOI: 10.1016/j.jcrc.2012.07.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 07/08/2012] [Accepted: 07/10/2012] [Indexed: 11/18/2022]
Abstract
Ophthalmologic complications are frequently encountered in intensive care unit (ICU) patients (Grixti et al. Ocul Surf 2012;10(1):26-42). However, eye care is often overlooked in the critical care setting or just limited to the ocular surface because treatment is focussed on the management of organ failures. Lack of awareness about other less common intraocular sight-threatening conditions may have a devastating effect on the patient's vision. To identify specific, frequently missed uncommon ocular disorders in ICU, a literature review using the keywords "Intensive Care," "Eye care," "ITU," "ICU," "Ophthalmological disorders," "Eye disorders" was performed. The databases of CINAHL, PuBMed, EMBASE, and Cochrane library were searched. The higher quality studies are summarized in the table with statements of methodology to clarify the level of evidence. The most prevalent ophthalmologic disorders identified in critically ill subjects include exposure keratopathy, chemosis, and microbial keratitis. In addition, uncommon eye disorders reported in ICU include metastatic endogenous endophthalmitis, acute primary angle closure, ischemic optic neuropathy, pupil abnormalities, vascular occlusions, and rhino-orbital cerebral mucormycosis. Early diagnosis and effective treatment will help to prevent visual loss.
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Affiliation(s)
- Andre Grixti
- Department of Ophthalmology, Arrowe Park Hospital, Arrowe Park Rd, Upton, Wirral CH49 5PE, UK.
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15
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Natale F, Aronne L, Credendino M, Siciliano A, Allocca F, Weizs SH, Martone F, di Marco GM, Calabrò P, Tedesco MA, Russo MG, Calabrò R. Which is the correct management of patients with asymptomatic severe calcific aortic stenosis after symptomatic spontaneous calcium cerebral embolism? J Cardiovasc Med (Hagerstown) 2011; 12:428-9. [PMID: 21346590 DOI: 10.2459/jcm.0b013e328344bcc7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Elective surgery cannot be recommended in every patient with asymptomatic severe aortic stenosis, and predictors identifying high-risk patients need to be identified. In guidelines we read that elective surgery, at the asymptomatic stage, can only be recommended in selected patients, at low operative risk (see guidelines of European Society of Cardiology and American Heart Association), but we have not read any reference to patients with severe calcific aortic stenosis after symptomatic spontaneous calcium cerebral embolism. Because cardioembolic stroke is associated with poor prognosis compared to other stroke subtypes, in patients with asymptomatic severe aortic stenosis and spontaneous calcific embolic stroke valve replacement appears to offer the best hope of avoiding a recidivation of stroke and should be considered in most cases. On the contrary, is it still correct to consider as asymptomatic patients with severe aortic stenosis and cerebral thromboembolism from a calcified aortic valve?
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Affiliation(s)
- Francesco Natale
- Department of Cardiology, Second University of Naples, Naples, Italy.
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16
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Mohr J, Mast H. Carotid Artery Disease. Stroke 2011. [DOI: 10.1016/b978-1-4160-5478-8.10022-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Calcific aortic valve and spontaneous embolic stroke: A review of literature. J Neurol Sci 2009; 287:32-5. [DOI: 10.1016/j.jns.2009.07.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 06/28/2009] [Accepted: 07/23/2009] [Indexed: 11/15/2022]
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18
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Petzold A, Plant GT. Central and Paracentral Visual Field Defects and Driving Abilities. Ophthalmologica 2008; 219:191-201. [PMID: 16088237 DOI: 10.1159/000085727] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Accepted: 08/19/2004] [Indexed: 12/29/2022]
Abstract
The effect of central and paracentral visual field defects on driving abilities has until now received little attention. To date studies and surveys have concentrated on visual acuity and peripheral field loss. Here we summarise for the first time those diseases causing central visual field defects likely to be associated with binocular visual acuity adequate for driving.
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Affiliation(s)
- A Petzold
- Department of Neuroimmunology, Institute of Neurology, London, UK.
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19
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20
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Abstract
Hypertension has a range of effects on the eye. Hypertensive retinopathy refers to retinal microvascular signs that develop in response to raised blood pressure. Signs of hypertensive retinopathy are frequently seen in adults 40 years and older, and are predictive of incident stroke, congestive heart failure, and cardiovascular mortality--independently of traditional risk factors. Hypertension is also a major risk factor for the development of other retinal vascular diseases, such as retinal vein and artery occlusion, and ischaemic optic neuropathy. High blood pressure increases the risk of both development of diabetic retinopathy and its progression. Adequate control of blood pressure has been proven in randomised clinical trials to reduce vision loss associated with diabetic retinopathy. Finally, hypertension has been implicated in the pathogenesis of glaucoma and age-related macular degeneration. Recognition of the ocular effects of blood pressure could allow physicians to better manage patients with hypertension, and to monitor its end-organ effects.
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Affiliation(s)
- Tien Yin Wong
- Centre for Eye Research Australia, University of Melbourne, Australia.
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21
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Ehrlich R, Mutzmacher L, Averbuch L, Dotan G, Hirsh R. Do complaints of amaurosis fugax and blurred vision after transcatheter device closure of atrial septal defect indicate microemboli to retinal vessels? Int J Cardiol 2005; 104:21-4. [PMID: 16137504 DOI: 10.1016/j.ijcard.2004.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2004] [Revised: 06/19/2004] [Accepted: 09/04/2004] [Indexed: 10/25/2022]
Abstract
Atrial septal defect (ASD) is a common diagnosis in adults undergoing surgical repair. The aim of the study was to determine if ocular symptoms following treatment are due to microemboli. The study group included 20 adult patients (9 men, 11 women, mean age 57.2 years) with ASD who had undergone successful closure with the Amplatzer occluder. Patients were treated with aspirin or warfarin during the 6 months after the procedure. All were evaluated neurologically and an ocular medical history was obtained. Ocular examination included the 120-point Humphery visual field. Transcranial Doppler (TCD) was performed to monitor the middle cerebral artery. Two patients complained of amaurosis fugax at 1 and 3 months after the procedure, and two patients complained of blurred vision at 3 and 4 months after the procedure. TCD performed within 24 h of the complaints revealed no abnormalities. In all patients, the neurological and ocular examinations, including the visual field test, were normal. In conclusion, microembolic events do not appear to be the cause of the ocular complaints in patients with ASD treated with Amplatzer occluder. Further studies in larger samples are needed to confirm these results.
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Affiliation(s)
- Rita Ehrlich
- Department of Ophthalmology, Rabin Medical Center, Beilinson Campus, Petah Tikva 49 100, Israel.
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22
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Ehrlich R, Mutzmacher L, Averbuch L, Dotan G, Hirsh R. Do Complaints of Amaurosis Fugax and Blurred Vision after Transcatheter Device Closure of Atrial Septal Defect Indicate Microemboli to Retinal Vessels? J Interv Cardiol 2005; 18:21-5. [PMID: 15788050 DOI: 10.1111/j.1540-8183.2005.00392.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Atrial septal defect (ASD) is a common diagnosis in young adults with congenital heart disease. The aim of this study was to determine if ocular symptoms following percutaneous treatment are due to microemboli. The study group included 20 adult patients (9 men, 11 women, mean age 57.2 years) with ASD who had undergone successful closure with the Amplatzer occluder. The patients were treated with aspirin or warfarin during 6 months after the procedure. All were evaluated neurologically and an ocular medical history was obtained. Ocular examination included the 120-point Humphrey visual field. Transcranial Doppler (TCD) was performed to monitor the middle cerebral artery. Two patients complained of amaurosis fugax at 1 and 3 months after the procedure, and two patients complained of blurred vision at 3 and 4 months after the procedure. TCD performed for 45 minutes within 24 hours of the visual complaints revealed no abnormalities. In all patients, the neurological and ocular examinations, including the visual field test, were normal. In conclusion, microembolic events could not be demonstrated to be the cause of the ocular complaints in patients with ASD treated with Amplatzer occluder. Further studies in larger samples are needed to confirm these results.
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Affiliation(s)
- Rita Ehrlich
- Department of Ophthalmology, Rabin Medical Center, Beilinson Campus, Petah Tikva and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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23
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Chin HS, Yoon JH, Moon YS, Oh JH. Transthoracic echocardiography and carotid Doppler ultrasound for detection of cardiac and carotid artery disease in patients with acute retinal artery obstruction. KOREAN JOURNAL OF OPHTHALMOLOGY 2005; 18:148-53. [PMID: 15635828 DOI: 10.3341/kjo.2004.18.2.148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We reviewed the medical records of patients with acute retinal artery obstruction (RAO) and evaluated the importance of transthoracic echocardiography (TTE) and carotid Doppler ultrasound in determining causes of cardiac and carotid artery origin in RAO. A retrospective case study conducted in the Department of Ophthalmology, Inha University Hospital, Korea comprised 26 patients presenting with acute RAO who underwent systemic evaluation, TTE and carotid Doppler ultrasound between June 1, 1997 and December 31, 2003. Among these 26 patients, abnormal cardiac findings were detected in 12 (46%) and abnormal carotid findings in 4 (15%). Furthermore, other risk factors for RAO were found in 2 (8%) and stroke broke out within 7 months after experiencing RAO in 4 (15%) of the 26 patients. In patients with acute RAO, TTE and carotid Doppler ultrasound play an important role in pinpointing the origins of retinal emboli. It is thought that TTE and carotid Doppler ultrasound may be essential examinations for determining the underlying cause, planning treatment strategies, and preventing stroke and death.
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Affiliation(s)
- Hee Seung Chin
- Department of Ophthalmology, College of Medicine, Inha University, Inchon, Korea
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24
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Kondamudi V, Reddy R, Kondamudi N, Harvey R, Delarosa M. Sudden painless unilateral vision loss caused by branch retinal artery occlusion: implications for the primary care physician. Am J Med Sci 2004; 327:44-6. [PMID: 14722396 DOI: 10.1097/00000441-200401000-00009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We report a case of sudden onset visual loss caused by branch retinal artery occlusion. Systematic search for the cause of branch retinal artery occlusion revealed Factor V Leiden mutation and antiphospholipid antibody syndrome as the cause. Implications for diagnosis and management are discussed.
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Affiliation(s)
- Vasantha Kondamudi
- Department of Family Practice, The Brooklyn Hospital Center, NY 11201, USA.
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25
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Wakefield MC, O'Donnell SD, Goff JM. Re-evaluation of carotid duplex for visual complaints: who really needs to be studied? Ann Vasc Surg 2003; 17:635-40. [PMID: 14534847 DOI: 10.1007/s10016-003-0073-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Amaurosis fugax (AF), Hollenhorst plaques, central retinal artery occlusion (CRAO), and nonspecific visual symptoms are all reasons for patient referral for carotid artery evaluation. This study reviews the management of patients with visual signs or symptoms based on their clinical presentation, carotid duplex results, follow-up data, and outcome. We performed a retrospective review of all patients presenting to the Vascular Surgery Clinic between June 1996 and December 2001 for carotid duplex scanning because of the indication of a visual disturbance. A total of 3560 carotid duplex examinations were performed during the study period; 98 were performed for a visual complaint or finding. A total of 11.1% of group 1 (Hollenhorst plaques), 22.2% in group 2 (CRAO), 45% in group 3 (AF), and 9.8% in group 4 (nonspecific visual symptoms) had significant carotid disease and underwent carotid endarterectomy. No patient who underwent screening carotid duplex and did not have surgically correctable disease developed significant carotid disease or symptoms from carotid disease during the study period. Hollenhorst plaques, CRAO, and nonspecific visual complaints are a poor predictor of significant carotid stenosis, while AF had a significantly higher rate of surgically correctable carotid stenosis. Patients with visual signs or symptoms need an initial screening carotid duplex examination. If this does not show surgically correctable disease, patients do not need to return for further examinations unless another indication arises.
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Affiliation(s)
- Matthew C Wakefield
- Peripheral Vascular Surgery Service, Walter Reed Army Medical Center, Washington, DC 20307, USA
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26
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Nakata A, Sekiguchi Y, Hirota S, Yamashita Y, Takazakura E. Central retinal artery occlusion following cardiac catheterization. JAPANESE HEART JOURNAL 2002; 43:187-92. [PMID: 12025906 DOI: 10.1536/jhj.43.187] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We describe a 66-year-old Japanese man in whom central retinal artery occlusion followed cardiac catheterization. After the procedure, blurred vision was noted in the right eye, and ophthalmological examination revealed an occlusion. Central retinal artery occlusion is a very rare but serious complication of cardiac catheterization. We should anticipate this potential risk to ensure prompt detection and treatment.
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Affiliation(s)
- Akio Nakata
- Department of Internal Medicine, Kurobe Municipal Hospital, Toyama, Japan
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27
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Tsaloumas MD, Kirwan J, Vinall H, O'Leary MB, Prior P, Kritzinger EE, Dodson PM. Nine year follow-up study of morbidity and mortality in retinal vein occlusion. Eye (Lond) 2000; 14:821-7. [PMID: 11584836 DOI: 10.1038/eye.2000.230] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
PURPOSE The aim of this study was to conduct a detailed retrospective follow-up of a large cohort of patients with retinal vein occlusion (RVO), examining morbidity and mortality, to investigate a possible relationship between RVO, large vessel disease and stroke, and to determine whether recurrence of RVO was influenced by treatment of associated medical conditions. METHODS A follow-up study was undertaken in 1994 of all patients (n = 588) who presented to the medical ophthalmology clinics of the Birmingham and Midland Eye Hospital between 1982 and 1989 with a definitive diagnosis of RVO. RESULTS Follow-up data were obtained on 549 patients (93%). Results showed that recurrence of RVO in the same or fellow eye was decreased by more than half in the follow-up group (3.3%) when compared with the known recurrence rate at initial presentation (8.8%). Comparison of the deceased with the survivors showed that the deceased patients were significantly older (mean age 70.2 vs 63.4 years). The prevalence of rubeosis iridis and smoking were statistically significantly increased when comparing the deceased with the survivors (p < 0.016 and p < 0.008 respectively). The deceased had a higher prevalence of diabetes (15.8% vs 10.1%), and there was a trend towards increased clinically evident macrovascular disease in those patients who had died (23.2% vs 19.5%). Neither hypertension nor hyperlipidaemia predicted death, as the prevalence rates of the two conditions were similar in survivors and those who had died (60.0% vs 60.6% and 48.4% vs 53.3%). The percentage of patients taking antiplatelet drug therapy was not different in the two groups (36.8% vs 38.3%). Analysis of the causes of death of the RVO population (n = 95) compared with the causes of death in the West Midlands population as a whole, showed that the percentage of deaths from myocardial infarction in the RVO population was significantly higher (23.1% vs 14.4%, p < 0.05). There was no statistical difference between the populations for ischaemic heart disease and stroke, although there was a trend for increased mortality from stroke (19% vs 13.5%). CONCLUSION These data suggest a relationship between RVO, mortality and increased cardiovascular risk factors (smoking, diabetes and macrovascular disease), and support the possibility of an association between RVO and stroke. They also support the potential value of medical treatment of underlying medical conditions in preventing recurrence of RVO.
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Affiliation(s)
- M D Tsaloumas
- Birmingham and Midland Eye Centre, City Hospital NHS Trust and Birmingham Heartlands NHS Trust Hospital, Birmingham, UK
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28
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Abstract
Occlusions of the retinal arterial and venous circulations are common causes of severe visual decline and can affect all age groups. Acute retinal arterial obstruction is often associated with critical cerebrovascular and cardiovascular disease that may require systemic treatment. Retinal venous obstruction may be the presentation of significant systemic hypertension, diabetes mellitus, and a greater risk for cardiovascular morbidity. Additional metabolic and hematologic abnormalities have been identified in patients with retinal occlusive disease. The authors review recent advances in the study of systemic conditions associated with retinal vascular occlusions and offer guidelines for appropriate medical evaluation of patients with retinal occlusive disease.
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Affiliation(s)
- F M Recchia
- Retina Service, Wills Eye Hospital, Philadelphia, Pennsylvania, USA
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29
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Tillett A, Edelsten C. Branch retinal artery occlusion: a case complicating acute rheumatic fever and dental abscess. HOSPITAL MEDICINE (LONDON, ENGLAND : 1998) 2000; 61:360-1. [PMID: 10953747 DOI: 10.12968/hosp.2000.61.5.1339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A15-year-old boy presented with a 2-month history of lethargy, weight loss and migratory arthralgia following an episode of pharyngitis while on holiday in the Mediterranean. Examination revealed the murmurs of mitral and aortic regurgitation which were confirmed on echocardiogram. The serum C-reactive protein (CRP) was high at 124 mg/litre and the streptococcal antibody titre markedly elevated at >1440 units. A diagnosis of acute rheumatic fever was made and penicillin commenced in addition to aspirin for joint pain. Three months after diagnosis he was asymptomatic, the CRP was normal and aspirin was discontinued. Six weeks later he presented with sudden onset of blurred vision in the right eye with a visual field defect in the nasal upper quadrant. There was no history of migraine and fundoscopy revealed an embolus at the disc with severe oedema below the macula consistent with occlusion of the inferotemporal branch of the retinal artery (Figure 1). Warfarin was commenced pending further investigation. Subsequent transoesophageal echo showed mild mitral regurgitation and minimal aortic regurgitation with no vegetations or thrombus. There was no evidence of arrhythmia and brain magnetic resonance imaging was normal. His protein C activity was transiently low at 64% (normal range 70–130%) and his CRP rose to 36 mg/litre. Aspirin was therefore substituted for warfarin. Three days later he presented with two dental abscesses requiring extraction. Fourteen months after presentation the superior altitudinal scotoma has improved and the retinal oedema resolved. Mild mitral valve regurgitation persists but aortic valve function appears normal. He continues on low dose aspirin and penicillin.
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Haase CG, Büchner T. Microemboli are not a prerequisite in retinal artery occlusive diseases. Eye (Lond) 1998; 12 ( Pt 4):659-62. [PMID: 9850260 DOI: 10.1038/eye.1998.164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Retinal artery occlusion (RAO) is caused by arterio-arterial or cardiovascular emboli in about 50% of all cases, but the role of non-embolic causes remains unclear. SUBJECTS AND METHODS We studied 27 patients with amaurosis fugax (AFX), branch retinal artery occlusion (BRAO), central retinal artery occlusion (CRAO) and anterior ischaemic optic neuropathy (AION). Patients underwent an evaluation of cerebrovascular and cardiovascular risk factors, measurement of haemorheological parameters, and Doppler/duplex sonography including ultrasound detection of cerebral microembolic signals and echocardiography. RESULTS Forty-one per cent of the patients had internal carotid atherosclerosis but only one patient had microembolic signals, probably due to a cardiac thrombus. Vascular risk factors, especially hypertension, were present in 82% of the patients correlating with abnormal haemorheological parameters such as increased thrombocyte reactivity. CONCLUSIONS Our results indicate that altered haemorheological parameters, especially increased thrombocyte reactivity and vascular risk factors such as arterial hypertension, are non-embolic causes of vascular disease in a significant number of patients with RAO. This should guide diagnostic and therapeutic considerations concerning RAO in cases without proven embolic sources.
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Affiliation(s)
- C G Haase
- Department of Neurology, University Hospital of Münster, Germany
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31
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Sharma S, Brown GC, Cruess AF. Accuracy of visible retinal emboli for the detection of cardioembolic lesions requiring anticoagulation or cardiac surgery. Retinal Emboli of Cardiac Origin Study Group. Br J Ophthalmol 1998; 82:655-8. [PMID: 9797667 PMCID: PMC1722615 DOI: 10.1136/bjo.82.6.655] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIM To determine the accuracy of visible retinal emboli as a diagnostic "test" for the likelihood of receiving anticoagulation or cardiac surgery based on the results of transthoracic echocardiography, in the setting of acute retinal arterial occlusion. METHODS A multicentre retrospective diagnostic study at Kingston Eye Centre, Queen's University, Kingston, Ontario; Wills Eye Hospital, Philadelphia; Ottawa Eye Institute, Ottawa, Ontario; and the Halifax Infirmary, Halifax, Nova Scotia of 104 patients with both embolic and nonembolic acute retinal arterial obstruction who underwent transthoracic echocardiography was performed, to determine the accuracy of visible retinal emboli as a diagnostic "test" for anticoagulation or cardiac surgery. Anticoagulation or surgical intervention on the basis of abnormalities was detected solely through the technology of transthoracic echocardiography. RESULTS 41 patients had visible retinal emboli (calcific, cholesterol, or fibrin). The remaining 63 had no evidence of embolic disease. The sensitivity of emboli for the likelihood of a patient receiving anticoagulation or cardiac surgery was 50%. The specificity, positive predictive value, and negative predictive value were 62%, 15%, and 90%, respectively. The likelihood ratio (LR = 1.31) obtained given the presence of a visible retinal embolus was neither clinically nor statistically significant (LR+ve = 1.31; 95% CI (0.91, 3.16)). This likelihood ratio, when applied to a patient with a pretest probability of 50%, results in a post-test probability of 56.7%. CONCLUSIONS These results demonstrate that the presence of a visible retinal embolus should not be the sole determinant of whether to order transthoracic echocardiography, as the likelihood ratio for a patient receiving anticoagulation or cardiac surgery, given the presence of a visible retinal embolus was only 1.31.
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Affiliation(s)
- S Sharma
- Coordinating Centre, Queen's University, Kingston Ontario, Canada
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32
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Dodson PM, Kritzinger EE. Medical cardiovascular treatment trials: relevant to medical ophthalmology in 1997? Eye (Lond) 1997; 11 ( Pt 1):3-11. [PMID: 9246268 DOI: 10.1038/eye.1997.2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- P M Dodson
- Department of Diabetes, Birmingham Heartlands Hospital and Birmingham and Midland Eye Centre, Birmingham, UK
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Smit RL, Baarsma GS, Koudstaal PJ. The source of embolism in amaurosis fugax and retinal artery occlusion. Int Ophthalmol 1994; 18:83-6. [PMID: 7814205 DOI: 10.1007/bf00919244] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To assess the diagnostic value of an extensive cardiac screening and of carotid artery duplex scanning in patients suspected of suffering from retinal embolism, we examined 41 consecutive patients (mean age 59.6 years, range 36-74) who presented either with amaurosis fugax or with a retinal artery occlusion. In spite of extensive investigations, we found no cause in 27 patients (66%). In 11 patients (27%), symptoms were likely to be due to a stenosis or an occlusion of the ipsilateral carotid artery. In only 1 patient (2%), the heart was likely to be a source of embolism. We conclude that in patients in this age group suffering from either amaurosis fugax or a retinal artery occlusion, a carotid artery duplex scanning should be performed first as this investigation is more likely to provide useful information than an extensive cardiac screening (ECG, Holter 24-hour monitoring and precordial echocardiography).
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Affiliation(s)
- R L Smit
- Eye Hospital Rotterdam, The Netherlands
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Müller M, Kessler C, Wessel K, Mehdorn E, Kömpf D. Low-Tension Glaucoma: A Comparative Study With Retinal Ischemic Syndromes and Anterior Ischemic Optic Neuropathy. Ophthalmic Surg Lasers Imaging Retina 1993. [DOI: 10.3928/1542-8877-19931201-07] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
This review of acute visual failure covers the clinical manifestations and management of ocular strokes CRA occlusion, BRA occlusion and AION. The diagnostic process for each patient requires meticulous attention to: 1. Blood pressure, heart rate and rhythm, palpation of the temporal arteries, and auscultation of the heart, neck, eyes and head. 2. Dilated funduscopic examination. 3. Immediate blood tests: complete blood count, PT, PTT, platelet count, ESR, fibrinogen level, fasting blood sugar, cholesterol, triglyceride and blood lipids. A test for antiphospholipid antibodies (ACLA and LA) is recommended in unexplained cases of CRA occlusion. Non-invasive investigations should utilise a battery of tests: 1. Carotid non-invasive studies; the useful tests give information about the presence of a haemodynamic lesion (Dopper ultrasonography and oculoplethysmography), analyse the bruit to determine the residual lumen diameter (phonoangiography), or image the artery with ultrasound (B-Scan ultrasonography). 2. Two-dimensional echocardiogram Invasive investigations are required in selected patients: 1. A temporal artery biopsy 2. A carotid arteriogram if the patient is a candidate for endarterectomy. The patient can be screened first with a non-invasive MRA of the neck and brain. 3. A timed FFA, particularly in cases of CRA occlusion when occlusion of the ophthalmic artery is suspected, in cases of AION of possible embolic origin or in AION to document the position of the watershed zone of the choroidal circulation and its relation to the optic nerve head. Emergency treatment in CRA occlusion is designed to lower intra-ocular pressure and dislodge the embolus. In impending CRA occlusion heparin is useful. Urgent systemic corticosteroids are needed when CRA occlusion, or AION are due to arteritis. In other situations treatment is directed towards preventing recurrence or involvement of the other eye by reducing or eliminating identified risk factors.
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Affiliation(s)
- S H Wray
- Harvard Medical School, Department of Neurology, Massachusetts General Hospital, Boston 02114
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36
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Gordon DL, Hayreh SS, Adams HP. Microangiopathy of the brain, retina, and ear: improvement without immunosuppressive therapy. Stroke 1991; 22:933-7. [PMID: 1853414 DOI: 10.1161/01.str.22.7.933] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We describe a pregnant young woman with branch retinal arteriolar occlusions, encephalopathy, and hearing loss in whom we demonstrated a patent foramen ovale. She improved while receiving anticoagulants and no immunosuppressive therapy. The microangiopathic syndrome of retinopathy, encephalopathy, and deafness may be due to a disturbance of coagulation and/or microembolism.
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Affiliation(s)
- D L Gordon
- Department of Neurology, University of Iowa College of Medicine, Iowa City 52242
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Hankey GJ, Slattery JM, Warlow CP. Prognosis and prognostic factors of retinal infarction: a prospective cohort study. BMJ (CLINICAL RESEARCH ED.) 1991; 302:499-504. [PMID: 2012845 PMCID: PMC1669576 DOI: 10.1136/bmj.302.6775.499] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To determine the prognosis and adverse prognostic factors in patients with retinal infarction due to presumed atheromatous thromboembolism or cardiogenic embolism. DESIGN Prospective cohort study. SETTING University hospital departments of clinical neurology. PATIENTS 99 patients with retinal infarction, without prior stroke, referred to a single neurologist between 1976 and 1986 and evaluated and followed up prospectively until death or the end of 1986 (mean follow up 4.2 years). INTERVENTIONS Cerebral angiography (55 patients), aspirin treatment (37), oral anticoagulant treatment (eight), carotid endarterectomy (13), cardiac surgery (six), and peripheral vascular surgery (two). MAIN OUTCOME MEASURES Death, stroke, coronary events, contralateral retinal infarction; survival analysis confined to 98 patients with retinal infarction due to presumed artheromatous thromboembolism or cardiogenic embolism (one patient with giant cell arteries excluded), and Cox's proportional hazards regression analysis, including age as a prognostic factor. RESULTS During follow up 29 patients died (21 of vascular causes and eight of non-vascular or unknown causes), 10 had a first ever stroke, 19 had a coronary event, and only one developed contralateral retinal infarction. A coronary event accounted for more than half (59%) of the deaths whereas stroke was the cause of only one death (3%). Over the first five years after retinal infarction the actuarial average absolute risk of death was 8% per year; of stroke 2.5% per year (7.4% in the first year); of coronary events 5.3% per year, exceeding that of stroke; and of stroke, myocardial infarction, or vascular death 7.4% per year. Prognostic factors associated with an increased risk of death were increasing age, peripheral vascular disease, cardiomegaly, and carotid bruit. Adverse prognostic factors for serious vascular events were increasing age and carotid bruit for stroke, and increasing age, cardiomegaly, and carotid bruit both for coronary events and for stroke, myocardial infarction, or vascular death. CONCLUSIONS Patients who present with retinal infarction due to presumed atherothromboembolism or cardiogenic embolism are at considerable risk of a coronary event. The risk of stroke, although high, is not so great. Not all strokes occurring after retinal infarction relate directly to disease of the ipsilateral carotid system, although this is probably the most common cause. Few patients experience contralateral retinal infarction. Non-arteritic retinal infarction should be diagnosed or confirmed by an ophthalmologist, and the long term care of patients with the condition should involve a physician who has an active interest in managing vascular disease.
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Affiliation(s)
- G J Hankey
- Department of Clinical Neurosciences, Western General Hospital, Edinburgh
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Abstract
Coronary artery disease and ischemic cerebrovascular disease are leading causes of morbidity and mortality in the United States. Coronary artery disease often coexists with asymptomatic carotid artery atherosclerosis, transient ischemic attacks, or ischemic stroke. Numerous studies have shown that mortality from all forms of ischemic cerebrovascular disease is primarily due to coronary artery disease. Thus, there is increasing interest in identifying coronary artery disease in patients with cerebrovascular disease, including those without clinical manifestations of heart disease. We review the use of current noninvasive techniques to detect coronary artery disease and present practical approaches to screen for ischemic heart disease. Current diagnostic imaging methods for potential cardioembolic sources of cerebral infarction are also discussed.
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Affiliation(s)
- S Sirna
- Department of Internal Medicine, University of Iowa College of Medicine, Iowa City
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Rancurel G, Marelle L, Vincent D, Catala M, Arzimanoglou A, Vacheron A. Spontaneous calcific cerebral embolus from a calcific aortic stenosis in a middle cerebral artery infarct. Stroke 1989; 20:691-3. [PMID: 2655188 DOI: 10.1161/01.str.20.5.691] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Calcific emboli from a calcific aortic stenosis is an uncommon event, usually following local trauma, as from cardiac surgery or left heart catheterization or as a sequel to bacterial endocarditis. We report what we believe to be the first case of a spontaneous calcareous emboli demonstrated by cranial computed tomography. In this patient, systemic hypertension and mild aortic insufficiency may have caused increasing mechanical forces acting on the aortic cusps and may have precipitated embolism.
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Affiliation(s)
- G Rancurel
- Clinique Neurologique, Hôpital de La Salpétrière, Paris, France
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41
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Merchut MP, Gupta SR, Naheedy MH. The relation of retinal artery occlusion and carotid artery stenosis. Stroke 1988; 19:1239-42. [PMID: 3176083 DOI: 10.1161/01.str.19.10.1239] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We retrospectively studied 46 patients with symptomatic retinal artery occlusion and assessed the pattern and extent of carotid artery disease ipsilateral to the retinal artery occlusion. Ipsilateral internal carotid artery atherosclerotic lesions were virtually limited to the cervical arterial segment; 50% of such lesions were plaques or stenoses of less than or equal to 60%, whereas 15% of the angiograms were normal. No clinical features were significantly associated with a flow-limiting carotid stenosis of greater than 60%. Contrary to previous reports, the type of retinal artery occlusion, whether branch or central artery occlusion, was not predictive of severe underlying carotid stenosis or occlusion. Likely mechanisms of retinal artery occlusion include in situ thrombosis and emboli from carotid, and possibly cardiac, sources. Extension of thrombus from an occluded carotid artery into the ophthalmic artery did not appear to be a mechanism of retinal artery occlusion.
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Affiliation(s)
- M P Merchut
- Department of Neurology, Loyola University Medical Center, Maywood, IL 60153
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42
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Giuffrè G. Delayed filling of retinal and ciliary circulation after central retinal artery occlusion. Doc Ophthalmol 1988; 69:325-30. [PMID: 3060337 DOI: 10.1007/bf00162746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The filling times of the retinal and choroidal circulation were evaluated in 17 patients with central retinal artery occlusion by means of fluorescein angiography. A correlation between the filling times of the two circulations was found. However, two filling patterns were seen: first, both fillings delayed; second, both fillings normal. It is probable that in the former case an obstructive disease of the carotid arteries exists, while in the latter case an important pathology of the carotid arteries is lacking, favouring a rapid restoration of the retinal circulation. This hypothesis seems to be confirmed by the results of the Doppler velocimetry of the carotid arteries.
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Affiliation(s)
- G Giuffrè
- Istituto di Clinica Oculistica, Università di Palermo, Italy
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Douglas DJ, Schuler JJ, Buchbinder D, Dillon BC, Flanigan DP. The association of central retinal artery occlusion and extracranial carotid artery disease. Ann Surg 1988; 208:85-90. [PMID: 3389947 PMCID: PMC1493569 DOI: 10.1097/00000658-198807000-00012] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
To determine the incidence of associated carotid artery disease and the effect of carotid endarterectomy on subsequent neurologic sequelae, a retrospective study of 66 patients with central retinal artery occlusion (CRAO) was undertaken. Ipsilateral extracranial carotid artery disease was present in 23 of 33 patients (70%) who had carotid arteriography. Sixteen patients had carotid endarterectomy following their CRAO (Group I) and 50 did not (Group II). Seven of the 40 patients available for follow-up in Group II had a subsequent stroke (mean follow-up: 54 months). Of the seven Group II patients shown to have associated carotid disease (Group IIs), three (43%) had a subsequent stroke during follow-up (mean: 28.3 months) compared to zero in Group I (p = 0.033; mean follow-up: 18.7 months). Because of the strong association between CRAO and ipsilateral carotid artery disease and because of the significantly higher incidence of subsequent ipsilateral stroke in CRAO patients with carotid disease who did not undergo endarterectomy, thorough evaluation of the carotid arteries followed by carotid endarterectomy, if indicated, is warranted in CRAO patients who have no other obvious etiology for the occlusion.
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Affiliation(s)
- D J Douglas
- Department of Surgery, University of Illinois College of Medicine, Chicago 60612
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Visonà A, Lusiani L, Castellani V, Ronsisvalle G, Bonanome A, Nicolin P, Ventura A, Pagnan A. Hemispheric TIA and amaurosis fugax: what is their relation to stenotic lesions of internal carotid artery? Heart Vessels 1987; 3:91-5. [PMID: 3693261 DOI: 10.1007/bf02058525] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We evaluated the correlation of clinical and echo-Doppler findings from the internal carotid artery (ICA) in 17 patients with amaurosis fugax (AF) and in 68 patients with hemispheric TIA (H-TIA). In the study population as a whole, moderate stenoses (20%-49% diameter reduction) were the most prevalent finding in the symptomatic ICA, being detectable in 51.6% of cases. Total occlusions were found in an unexpectedly high percentage (7.5%). Asymptomatic ICAs, that were contralateral to the symptoms, showed the same degree of atherosclerotic involvement as the symptomatic ICAs. When we compared AF with H-TIA, we found a significantly higher prevalence of severe hemodynamically significant stenoses in the former (52.6% vs. 18.8%, chi-square test 10.85, P less than 0.05). Thus, we conclude that in the vast majority of patients with transient neurological symptoms a bilateral ICA involvement is to be expected. The side on which the symptoms occur does not indicate which ICA is more severely stenotic except in AF, where a severe involvement of the ipsilateral ICA is most likely.
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Affiliation(s)
- A Visonà
- Istituto di Medicina Clinica-Clinica Medica I, Università di Padova, Italy
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Abstract
Embolism with brain infarction rarely complicates calcific aortic stenosis (CAS). We report a case with severe CAS where the patient experienced multiple embolic strokes immediately following retrograde heart catheterization. Calcific emboli in the cerebral arteries were demonstrated by computed tomography (CT).
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Abstract
A retrospective case note survey of 139 cases of carotid territory TIAs was carried out. Angiographic evidence of carotid stenosis was more frequently encountered when the patient's attacks consisted of symptoms suggestive of ischemia of small cortical territories with involvement restricted to the arm or leg or to dysphasia. Attacks of hemiparesis affecting face, arm and leg, or arm and leg were less often associated with carotid stenosis. If patients described any attacks of a restricted nature the chance of finding carotid stenosis was 47%, if not 16%. It is argued that these findings are a reflection of the varied pathogenesis of TIAs, and the relevance of this heterogeneity to the interpretation of clinical trials is briefly mentioned.
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Shapiro LM, Westgate CJ, Shine K, Donaldson R. Is cardiac ultrasound mandatory in patients with transient ischaemic attacks? BMJ : BRITISH MEDICAL JOURNAL 1985; 291:786-7. [PMID: 3929941 PMCID: PMC1417143 DOI: 10.1136/bmj.291.6498.786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Dawson DJ, Khan AN, Shreeve DR. Psoas muscle hypertrophy: mechanical cause for "jogger's trots?". BMJ : BRITISH MEDICAL JOURNAL 1985; 291:787-8. [PMID: 3929942 PMCID: PMC1417148 DOI: 10.1136/bmj.291.6498.787] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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50
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Tomsak RL. Digital subtraction carotid angiography and retinal artery obstruction. Ophthalmology 1985; 92:63A. [PMID: 3903596 DOI: 10.1016/s0161-6420(85)38998-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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