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Optimization of the Retinal Vein Occlusion Mouse Model to Limit Variability
Published on: August 6, 2021
Myocardial infarction and cerebrovascular accident in patients with retinal vein occlusion
Winifred Werther1, Laura Chu, Nancy Holekamp
1Genentech Inc, South San Francisco, California, USA. wwerther@jhsph.edu
Insights
Patients with retinal vein occlusion (RVO) have a nearly doubled risk of cerebrovascular accident (CVA) compared to controls. Myocardial infarction (MI) risk was similar between groups. This highlights RVO as a significant risk factor for stroke.
Area of Science:
- Ophthalmology
- Cardiology
- Neurology
- Public Health
Background:
- Retinal vein occlusion (RVO) is a significant vascular event affecting the eye.
- The association between RVO and systemic cardiovascular and cerebrovascular events requires further investigation.
- Understanding these risks is crucial for comprehensive patient management.
Purpose of the Study:
- To compare the incidence of myocardial infarction (MI) and cerebrovascular accident (CVA) in hospitalized patients with and without RVO.
- To quantify the risk of major adverse cardiovascular and cerebrovascular events associated with RVO.
Main Methods:
- Retrospective cohort study utilizing a US population-based health care claims database.
- Identification of patients with RVO and matched controls (age, sex).
- Analysis of MI and CVA event rates and calculation of adjusted rate ratios (RRs) for RVO versus controls, accounting for covariates.
Main Results:
- The incidence rate of MI was similar between patients with RVO (0.87 per 100 person-years) and controls (0.67 per 100 person-years), with an adjusted RR of 1.03 (P = .85).
- The incidence rate of CVA was significantly higher in patients with RVO (1.16 per 100 person-years) compared to controls (0.52 per 100 person-years).
- The adjusted RR for CVA was 1.72 (95% CI, 1.27-2.34; P = .001), indicating a nearly 2-fold increased risk in the RVO group.
Conclusions:
- Patients with RVO exhibit a significantly elevated risk of cerebrovascular accidents (stroke).
- No significant difference in myocardial infarction (heart attack) incidence was observed between RVO patients and controls.
- These findings underscore the importance of monitoring for cerebrovascular events in individuals with RVO.
Objective:
To compare the incidence rates of myocardial infarction (MI) and cerebrovascular accident (CVA) in hospitalized patients with and without branch or central retinal vein occlusion (RVO).
Methods:
In this retrospective cohort study, a US population-based health care claims database was used to identify patients with RVO and control patients, matched for age and sex. Events of MI, CVA, and covariates were identified for patients with and without RVO. Incidences of MI or CVA events prompting hospitalization and adjusted rate ratios (RRs) were calculated; RRs were adjusted for covariates consistent with risk factors for outcomes.
Results:
Of 4500 patients with RVO and 13,500 controls, the event rates for MI were 0.87 per 100 person-years and 0.67 per 100 person-years, respectively. The adjusted RR for MI was 1.03 (95% confidence interval [CI], 0.75-1.42; P = .85 for RVO vs controls). Event rates for CVA were 1.16 and 0.52 per 100 person-years for RVO and controls, respectively. The adjusted RR for CVA was 1.72 (95% CI, 1.27-2.34; P = .001) for RVO vs controls.
Conclusions:
This study provides quantitative data on the incidence of cardiovascular and cerebrovascular outcomes in patients with RVO in a large US population-based health care claims database. Event rates for MI were similar in patients with RVO and controls; however, the event rate for CVA in patients with RVO was almost 2-fold that observed in controls.
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