by Sonal Singh, Noelle M. Cocoros, Xiaojuan Li, Kathleen M. Mazor, Mary T. Antonelli, Lauren Parlett, Mark Paullin, Thomas P. Harkins, Yunping Zhou, Paula A. Rochon, Richard Platt, Inna Dashevsky, Carly Massino, Cassandra Saphirak, Sybil L. Crawford, Jerry H. Gurwitz
ContextPotentially inappropriate prescribing of medications in older adults, particular those with dementia, can lead to adverse drug events including falls and fractures, worsening cognitive impairment, emergency department visits, and hospitalizations. Educational mailings from health plans to patients and their providers to encourage deprescribing conversations may represent an effective, low-cost, “light touch”, approach to reducing the burden of potentially inappropriate prescription use in older adults with dementia.
ObjectivesThe objective of the Developing a PRogram to Educate and Sensitize Caregivers to Reduce the Inappropriate Prescription Burden in Elderly with Alzheimer’s Disease (D-PRESCRIBE-AD) trial is to evaluate the effect of a health plan based multi-faceted educational outreach intervention to community dwelling patients with dementia who are currently prescribed sedative/hypnotics, antipsychotics, or strong anticholinergics.
MethodsThe D-PRESCRIBE-AD is an open-label pragmatic, prospective randomized controlled trial (RCT) comparing three arms: 1) educational mailing to both the health plan patient and their prescribing physician (patient plus physician arm, n = 4814); 2) educational mailing to prescribing physician only (physician only arm, n = 4814); and 3) usual care (n = 4814) among patients with dementia enrolled in two large United States based health plans. The primary outcome is the absence of any dispensing of the targeted potentially inappropriate prescription during the 6-month study observation period after a 3-month black out period following the mailing. Secondary outcomes include dose-reduction, polypharmacy, healthcare utilization, mortality and therapeutic switching within targeted drug classes.
ConclusionThis large pragmatic RCT will contribute to the evidence base on promoting deprescribing of potentially inappropriate medications among older adults with dementia. If successful, such light touch, inexpensive and highly scalable interventions have the potential to reduce the burden of potentially inappropriate prescribing for patients with dementia.ClinicalTrials.gov Identifier: NCT05147428.
Sudden death resulting from cardiorespiratory arrest carries a high mortality rate and frequently occurs out of hospital. Immediate initiation of cardiopulmonary resuscitation (CPR) by witnesses, combined with automated external defibrillator (AED) use, has proven to double survival rates. Recognising the challenges of timely emergency services in rural areas, the implementation of basic CPR training programmes can improve survival outcomes. This study aims to evaluate the effectiveness of online CPR-AED training among residents in a rural area of Tarragona, Spain.
Quasi-experimental design, comprising two phases. Phase 1 involves assessing the effectiveness of online CPR-AED training in terms of knowledge acquisition. Phase 2 focuses on evaluating participant proficiency in CPR-AED simulation manoeuvres at 1 and 6 months post training. The main variables include the score difference between pre-training and post-training test (phase 1) and the outcomes of the simulated test (pass/fail; phase 2). Continuous variables will be compared using Student’s t-test or Mann-Whitney U test, depending on normality. Pearson’s 2 test will be applied for categorical variables. A multivariate analysis will be conducted to identify independent factors influencing the main variable.
This study adheres to the tenets outlined in the Declaration of Helsinki and of Good Clinical Practice. It operated within the Smartwatch project, approved by the Clinical Research Ethics Committee of the Primary Care Research Institute IDIAP Jordi Gol i Gurina Foundation, code 23/081-P. Data confidentiality aligns with Spanish and European Commission laws for the protection of personal data. The study’s findings will be published in peer-reviewed journals and presented at scientific meetings.
To identify, synthesise and map systematic reviews of the effectiveness of nursing interventions undertaken in a neonatal intensive care unit or special care nursery.
This scoping review was conducted according to the JBI scoping review framework.
Review included systematic reviews that evaluated any nurse-initiated interventions that were undertaken in an NICU or SCN setting. Studies that reported one or more positive outcomes related to the nursing interventions were only considered for this review. Each outcome for nursing interventions was rated a ‘certainty (quality) of evidence’ according to the Grading of Recommendations, Assessment, Development and Evaluations criteria.
Systematic reviews were sourced from the Cochrane Database of Systematic Reviews and Joanna Briggs Institute Evidence Synthesis for reviews published until February 2023.
A total of 428 articles were identified; following screening, 81 reviews underwent full-text screening, and 34 articles met the inclusion criteria and were included in this review. Multiple nursing interventions reporting positive outcomes were identified and were grouped into seven categories. Respiratory 7/34 (20%) and Nutrition 8/34 (23%) outcomes were the most reported categories. Developmental care was the next most reported category 5/34 (15%) followed by Thermoregulation, 5/34 (15%) Jaundice 4/34 (12%), Pain 4/34 (12%) and Infection 1/34 (3%).
This review has identified nursing interventions that have a direct positive impact on neonatal outcomes. However, further applied research is needed to transfer this empirical knowledge into clinical practice.
Implementing up-to-date evidence on effective nursing interventions has the potential to significantly improving neonatal outcomes.
No patient or public involvement in this scoping review.
The aim of this study was to explore the relationship between sensory impairment and home care client's received care time.
A cross-sectional multi-source study.
Data from a self-reported staff survey on care time allocation were merged with registry data from the Resident Assessment Instrument registry (n = 1477). The data were collected during 1 week from 17 home care units in Finland in October 2021. The relationship between sensory impairment and clients received care time was examined using linear regression analyses.
The linear regression analyses showed that having vision impairment alone increased care time, while dual sensory impairment resulted in decreased received care time. Hearing impairment alone was not statistically significantly associated with care time.
The holistic care need of home care clients with dual sensory impairment may not be adequate. To ensure equality and the individually tailored care of clients, further attention must be paid to clients with sensory impairments, especially those with dual sensory impairment. Furthermore, the competence of home care workers to encounter and communicate with clients with sensory impairment must be developed to support the holistic care.
The sensory impairments of home care clients must be identified in time and considered in care planning and encountering clients.
As there is a risk that clients with dual sensory impairment are not able to fully express themselves, it is imperative that further attention is paid to clients with sensory impairments, to better understand and support this vulnerable group. Increased awareness and continuous education are needed to better identify and support home care clients with sensory impairment.
The study adheres to the STROBE reporting guidelines.
No patient or public contribution.
To examine the impact of implementing nurse-led consultations compared to physician-led consultations on the frequency of follow-up contacts within 14 days following an acute infectious consultation.
Monocentric, prospective cohort study.
The study was conducted in a multidisciplinary, capitation-based general practice in Belgium. Through analysis of patient files, the number of follow-up contacts within 14 days after an infection consultation was investigated to determine any difference between physician-led or nurse-led consultations. Secondary outcomes included pharmacological interventions and the prescribing behaviour of medical leave certificates.
A total of 352 consultations were analysed, of which 174 conducted by physicians and 178 by nurses. No significant difference was found in the number of follow-up contacts. However, the probability of a pharmacological intervention by a physician was revealed to be significantly higher. The presence or absence of such pharmacological intervention did not significantly influence the number of follow-up contacts.
This study demonstrates that nurses can be safely and efficiently utilized in acute infection care within a general practice setting. Although these results are promising, more extensive research is needed which incorporates the experiences of patients and healthcare providers. Furthermore, it is advisable to consider the experience and education of the nurses and incorporate them into the analyses.
This study addressed the high workload on general practitioners by researching a task shift in the acute infectious, primary health care. The results demonstrate the feasibility of this task shift, which may have an impact on primary health care professionals (whose workload may be reorganized), as well as on patients for whom primary care may become more accessible.
This study includes direct patient data from people who presented themselves with acute infectious complaints in a primary healthcare practice.
To develop a framework for understanding the stress appraisal process among acute care nurses during the COVID-19 pandemic.
A secondary analysis of open-ended responses from a cross-sectional survey of 3030 frontline, acute care nurses in New Jersey and the effect of burnout during the COVID-19 pandemic.
Lazarus and Folkman's transactional model of stress and coping guided the study. Thematic analysis was used to analyse 1607 open-ended responses.
Nine themes emerged during the secondary appraisal of stress. Five themes contributed to distress and burnout including (1) high patient acuity with scarce resources, (2) constantly changing policies with inconsistent messaging, (3) insufficient PPE, (4) unprepared pandemic planning and (5) feeling undervalued. Four themes led to eustress and contributed to post-traumatic growth including (1) team nursing to ensure sufficient resource allocation, (2) open channels of communication, (3) sense- of-duty and (4) personal strength from new possibilities.
The COVID-19 pandemic was a traumatic event for patients and the nursing workforce. Internal and external demands placed on acute care nurses increased burnout, however, a subset of nurses with adequate support experienced personal growth.
Beyond mental health interventions for acute care nurses, organizational interventions such as reevaluation of emergency action plans to optimize resource allocation, and work environment strategies such as improved communication and decision-making transparency are necessary.
To better understand how frontline acute care nurses experienced stress during COVID-19, a data-informed framework was developed that included a primary and secondary appraisal of stress. Themes contributing to distress and burnout were identified, and themes leading to eustress and post-traumatic growth were also identified. These findings can assist nurse leaders in optimizing strategies to reduce burnout and promote post-traumatic growth in the post-COVID years.
No patient or public contribution.
To describe the implementation of a trauma-informed model of care in the Post COVID Respiratory Clinic of a large tertiary referral centre in NSW.
Discussion paper.
Evidence gathered from a literature search (2008–2022) was used to develop a framework for management of patients presenting to this Post COVID Respiratory Clinic. This paper outlines the personal reflections of the clinic staff as they developed and implemented this framework. Ethical approval was obtained to report the data collected from patient reviews.
The literature highlights the high prevalence of trauma in patients following COVID-19 infection, as well as the larger population both during and after the pandemic. This experience of trauma was observed in patients seen within the clinic, indicating a need for specialized care. In response, a trauma-informed model of care was implemented.
Reconceptualizing COVID-19 as a ‘collective trauma’ can help healthcare workers understand the needs of post-COVID patients and enable them to respond empathetically. A trauma-informed model is complementary to this cohort as it specifically addresses vulnerable populations, many of whom have been further marginalized by the pandemic.
Frontline healthcare workers, particularly nurses, are well positioned to implement trauma-informed care due to their high-level of patient contact. Adequate allocation of resources and investment in staff is essential to ensure such care can be provided.
The COVID-19 pandemic has led to adverse physical and mental health outcomes for many. Trauma-informed care is a way to promote reengagement with the healthcare system in this group. Post COVID patients globally may benefit from this approach, as it aims to build trust and independence.
Feedback was sought from a patient representative to ensure this paper adequately reflected the experience of the post-COVID patient.
To evaluate a nurse-led model of supportive care in a COPD outpatient service from patient and caregiver perspectives.
Case study methodology.
Data were collected from semi-structured interviews with patients (n = 12) and caregivers (n = 7) conducted between April 2020 and September 2022. A purposive sampling strategy was used. Interviews were transcribed verbatim and analysed using content analysis with an inductive approach. COREQ guidelines informed reporting of this study.
Eight categories were identified from the data evaluating of the model of care relating to the most helpful aspects of COPD supportive care and suggested improvements to the model of care. The categories were: guidance with managing symptoms; participating in advance care planning; home visiting; expert advice; continuity and trust; caring; caregiver support and improvements to the model of care.
In a nurse-led model of COPD supportive care, what patients and caregivers valued most was expert advice and guidance with symptom management, flexible home visiting, participation in advance care planning, caring and continuity within an ongoing trusted therapeutic relationship. Understanding what patients and caregivers value most is essential in designing and delivering models of care that meet the needs of patients living with chronic, life-limiting illness.
Nurses can lead effective models of supportive care that offer valuable support to patients living with COPD and their caregivers.
by Sufia Dadabhai, Laura Quaynor, Antonio Bandala-Jacques, Linly Seyama, Md Hafizur Rahman, Richard Phiri, Michele R. Decker, Taha E. Taha
PurposeGender inequity and adverse health outcomes continue to be of concern among women in sub-Saharan Africa. We determined prevalence of intimate partner violence and excess fertility (having more children than desired) in reproductive age women in Malawi. We also explored factors associated with these outcomes and with spousal fertility intentions.
Patients and methodsIn a cross-sectional study, a total of 360 women and 410 men were recruited using multi-stage sampling from communities in a peri-urban setting in Blantyre District, Southern Malawi in 2021. Women and men were separately interviewed by trained study workers using a structured questionnaire. In addition to descriptive analyses, we used univariate and multivariate logistic regression models to assess associations of risk factors with the outcomes of intimate partner violence and excess fertility.
ResultsAmong women, lifetime prevalence of intimate partner violence was 23.1%, and excess fertility was experienced by 25.6%. Intimate partner violence was associated with male partners alcohol consumption (adjusted odds ratio 2.13; P = 0.019). Women were more likely to report excess fertility if they were older (adjusted odds ratio 2.0, P Conclusions
Intimate partner violence, excess fertility, and social and health inequities continue to be prevalent in Malawi. These data suggest the underlying proximal and distal factors associated with these adverse outcomes such as alcohol consumption may be addressed through education, couple interactive communication, and community dialogue. To ensure sustainability and effectiveness, strong leadership involvement, both governmental and non-governmental, is needed.
To evaluate midwives' level of stress and burnout during the COVID-19 Omicron phase in Italy. Secondary aims were to explore the impact of the pandemic on midwives' personal dimensions and professional activities and potential supporting strategies.
A mixed-methods study was undertaken from July to December 2022.
Data were collected using a national online observational survey. Descriptive and inferential analyses were performed to evaluate stress, burnout and the impact of the pandemic on personal and professional dimensions. A deductive qualitative approach was used to analyse open-ended responses, that were merged with quantitative data following a convergent mixed-methods approach.
A total of 1944 midwives participated in the survey. The stress summary score mean was 10.34, and 562 midwives (28.91%) experienced burnout. The intention to reduce working hours was reported by 202 midwives (10.39%), with 60.40% (n = 122) of them experiencing burnout. The intention to leave clinical practice within the following 2 years was reported by 239 (12.29%), with 68.20% (n = 163) of them experiencing burnout. All the personal dimensions and professional activities considered were defined by more than half of midwives as being impacted ‘Moderately’ or ‘To a great extent’ by pandemic. Stress and burnout frequencies increased when the midwives' perception of the pandemic effects was higher. Potential supporting strategies described by midwives as the most important in increasing their ability to cope with the pandemic were ‘Women's awareness of the midwives' role’ (n = 1072; 55.14%) and ‘Family and friends' emotional support’ (n = 746; 38.38%).
Our findings suggested strategies to support a positive and safe working environment for midwives during a pandemic emergency, with potential transferability to similar contexts when human resources are lacking. It is recommended that maternity services provide the necessary resources for a safe and supportive working environment to prevent high stress levels and chronic burnout.
Studies conducted during the first COVID-19 pandemic wave showed an increased level of stress, anxiety, burnout, post-traumatic stress disorder and depression experienced by healthcare professionals; moreover, midwives experienced drastic changes in care pathways and policies with struggles identified when providing high-quality woman-centred care following pandemic restrictions. Although it is recommended, there is lack of knowledge about long-term psychological effects of COVID-19 for midwives. Our study highlights that during the Omicron wave midwives experienced a high level of stress and burnout with an impact on individual dimensions and professional activities. Their stress and burnout were influenced by several factors, including restrictions in place, lack of organizational acknowledgement, work overload and need for extra childcare cover. Maternity services should provide the necessary resources for a safe and supportive working environment to prevent high stress levels and chronic burnout. Recommendations on how to facilitate this are suggested.
During the writing process, we referred to ‘The Strengthening the Reporting of Observational Studies Epidemiology Statement’, the guidelines for reporting observational studies from the Equator network.
No patient or public contribution.
Work overload conditions negatively impacted on the quality of maternity services. Improving organizational aspects, reducing working hours, promoting family and friends' emotional support and improving women's awareness of midwife's role were the main strategies reported by midwives. These suggestions for ensuring a positive and safe working environment for midwives during a pandemic emergency could potentially be applied to similar situations where human resources are lacking.
by Jake V. Hinton, Calvin M. Fletcher, Luke A. Perry, Noah Greifer, Jessica N. Hinton, Jenni Williams-Spence, Reny Segal, Julian A. Smith, Christopher M. Reid, Laurence Weinberg, Rinaldo Bellomo
BackgroundPlatelets (PLTS) and fresh frozen plasma (FFP) are often transfused in cardiac surgery patients for perioperative bleeding. Their relative effectiveness is unknown.
MethodsWe conducted an entropy-weighted retrospective cohort study using the Australian and New Zealand Society of Cardiac and Thoracic Surgeons National Cardiac Surgery Database. All adults undergoing cardiac surgery between 2005–2021 across 58 sites were included. The primary outcome was operative mortality.
ResultsOf 174,796 eligible patients, 15,360 (8.79%) received PLTS in the absence of FFP and 6,189 (3.54%) patients received FFP in the absence of PLTS. The median cumulative dose was 1 unit of pooled platelets (IQR 1 to 3) and 2 units of FFP (IQR 0 to 4) respectively. After entropy weighting to achieve balanced cohorts, FFP was associated with increased perioperative (Risk Ratio [RR], 1.63; 95% Confidence Interval [CI], 1.40 to 1.91; P Conclusion
In perioperative bleeding in cardiac surgery patient, platelets are associated with a relative mortality benefit over FFP. This information can be used by clinicians in their choice of procoagulant therapy in this setting.
by Jacinda M. Nicklas, Laura Pyle, Andrey Soares, Jennifer A. Leiferman, Sheana S. Bull, Suhong Tong, Ann E. Caldwell, Nanette Santoro, Linda A. Barbour
BackgroundPostpartum women with overweight/obesity and a history of adverse pregnancy outcomes are at elevated risk for cardiometabolic disease. Postpartum weight loss and lifestyle changes can decrease these risks, yet traditional face-to-face interventions often fail. We adapted the Diabetes Prevention Program into a theory-based mobile health (mHealth) program called Fit After Baby (FAB) and tested FAB in a randomized controlled trial.
MethodsThe FAB program provided 12 weeks of daily evidence-based content, facilitated tracking of weight, diet, and activity, and included weekly coaching and gamification with points and rewards. We randomized women at 6 weeks postpartum 2:1 to FAB or to the publicly available Text4baby (T4B) app (active control). We measured weight and administered behavioral questionnaires at 6 weeks, and 6 and 12 months postpartum, and collected app user data.
Results81 eligible women participated (77% White, 2% Asian, 15% Black, with 23% Hispanic), mean baseline BMI 32±5 kg/m2 and age 31±5 years. FAB participants logged into the app a median of 51/84 (IQR 25,71) days, wore activity trackers 66/84 (IQR 43,84) days, logged weight 17 times (IQR 11,24), and did coach check-ins 5.5/12 (IQR 4,9) weeks. The COVID-19 pandemic interrupted data collection for the primary 12-month endpoint, and impacted diet, physical activity, and body weight for many participants. At 12 months postpartum women in the FAB group lost 2.8 kg [95% CI -4.2,-1.4] from baseline compared to a loss of 1.8 kg [95% CI -3.8,+0.3] in the T4B group (p = 0.42 for the difference between groups). In 60 women who reached 12 months postpartum before the onset of the COVID-19 pandemic, women randomized to FAB lost 4.3 kg [95% CI -6.0,-2.6] compared to loss in the control group of 1.3 kg [95% CI -3.7,+1.1] (p = 0.0451 for the difference between groups).
ConclusionsThere were no significant differences between groups for postpartum weight loss for the entire study population. Among those unaffected by the COVID pandemic, women randomized to the FAB program lost significantly more weight than those randomized to the T4B program. The mHealth FAB program demonstrated a substantial level of engagement. Given the scalability and potential public health impact of the FAB program, the efficacy for decreasing cardiometabolic risk by increasing postpartum weight loss should be tested in a larger trial.
To explore Remote Area Nurses' experiences of the implementation of workplace health and safety policies and risk mitigation strategies in Australian very remote primary health clinics.
This qualitative study used online semi-structured interviews, with participants purposively sampled to maximize variation in work location and service type. Data were analysed using a reflexive thematic analysis approach. Coding was carried out inductively, with NVivo 12 aiding data management.
The interviews were conducted from 24 Februrary 2021 to 06 March 2021 with Remote Area Nurses from very remote primary health clinics in Australia.
Fifteen Remote Area Nurses participated in the study.
Thematic analysis revealed varied approaches to workplace safety among the different health services and regions. While the spread of ‘never alone’ policies in many clinics addressed one of the significant risks faced by Remote Area Nurses, gaps remained even for hazards specifically highlighted in existing work health and safety legislation. Meaningful collaboration with staff and the community, local orientation, preparation for the role and providing quality care were protective factors for staff safety. Understaffing, unsafe infrastructure and inadequate equipment were common concerns among Remote Area Nurses.
Health services need to prioritize workplace safety and take a continuous quality improvement approach to its implementation. This will include ensuring safety strategies are appropriate for the local context, improving infrastructure maintenance, and establishing sustainable second responder systems such as a pool of drivers with local knowledge.
Poor personal safety contributes to burnout and high turnover of staff. Nurses' insights into the barriers and enablers of current workplace safety strategies will aid policymakers and employers in future improvements.
COREQ reporting guidelines were followed.
A panel of six Remote Area Nurses collaborated in the development of this project.
To explore how emerging adult-aged women self-manage their sexual and reproductive health and to generate a grounded theory of these self-management processes.
Grounded theory methods using a constructivist approach.
Between September 2019 and September 2020, 18‑ to 25-years-old women (n = 13) were recruited from a 4-year university, a 2-year community college, and neighbourhoods surrounding the institutions of higher education. Individual interviews were transcribed verbatim and qualitatively analysed using a constant comparative method and inductive coding.
The theory purports that core processes of sexual and reproductive health self-management used by the women in this study included both passive and (re)active processes. These processes expanded upon and/or maintained the women's accessible sexual and reproductive health knowledge, behaviour and beliefs, defined as the sexual and reproductive health repertoire. The processes appeared to be cyclical and were often initiated by a catalysing event or catalyst and resulted in conversations with confidantes, or trusted individuals. A catalyst was either resolved or normalized by expanding or maintaining the sexual and reproductive health repertoire.
The resulting theory, EMeRGE Theory, offers insight into the complex and cyclical processes emerging adult-aged women use to simultaneously develop and adapt their foundational sexual and reproductive health knowledge, behaviours and beliefs.
This explication of emerging adult-aged women's sexual and reproductive health self-management processes can be used by nurses and nurse researchers to better address this population's unique health needs.
The EMeRGE Theory provides valuable guidance for future exploratory and intervention research aimed at improving the health and well-being of emerging adult-aged women.
The authors adhered to the Consolidated Criteria for Reporting Qualitative studies (COREQ) in preparation of this publication.
No patient or public contribution.
Many long-term care facilities in the United States face significant problems with nurse retention and turnover. These challenges are attributed, at least in part, to moral distress and a negative nurse practice environment.
The purpose of the study was divided into two parts: first, to investigate the relationships among nurse practice environment, moral distress, and intent to stay; second, to explore the potential mediating effect of the nurse practice environment on the intent to stay among those with high levels of moral distress.
This study was a descriptive, cross-sectional survey using targeted sampling.
A total of 215 participants completed the surveys. Participants were nationally representative of long-term care nurses by age, years of experience, employment status, and type of health setting.
This study was an online national survey of long-term care nurses' perceptions of their intent to stay, moral distress level (Moral Distress Questionnaire), and nurse practice environment (Direct Care Staff Survey). Structural equation modeling analysis explored intent to stay, moral distress, and the nurse practice environment among long-term care nurses.
The mean moral distress score was low, while the mean nurse practice environment and intent to stay scores were high. Moral distress had a significant, moderately negative association with the nurse practice environment (β = −0.41), while the nurse practice environment had a significant, moderately positive association with intent to stay (β = 0.46). The moral distress had a significant, moderately negative association with intent to stay (β = −0.20). The computed structural equation modeling suggested a partially mediated model (indirect effect = −0.19, p = 0.001).
Since the nurse practice environment partially mediates the relationship between moral distress and intent to stay, interventions to improve the nurse practice environment are crucial to alleviating moral distress and enhancing nurses' intent to stay in their jobs, organizations, and the nursing profession.
Our study demonstrated that the nurse practice environment mediates moral distress and intent to stay. Interventions to improve the nurse practice environment are crucial to alleviating moral distress and enhancing nurses' intent to stay in their jobs, organizations, and the nursing profession.
by Jay B. Lusk, Lauren Wilson, Vinit Nalwade, Ailin Song, Matthew Schrag, Valerie Biousse, Fan Li, Sven Poli, Jonathan Piccini, Ying Xian, Emily O’Brien, Brian Mac Grory
Central retinal artery occlusion (CRAO; retinal stroke or eye stroke) is an under-recognized, disabling form of acute ischemic stroke which causes severe visual loss in one eye. The classical risk factor for CRAO is ipsilateral carotid stenosis; however, nearly half of patients with CRAO do not have high-grade carotid stenosis, suggesting that other cardiovascular risk factors may exist for CRAO. Specifically, prior studies have suggested that cardioembolism, driven by underlying atrial fibrillation, may predispose patients to CRAO. We describe the design of an observational, population-based study in this protocol. We evaluate two specific objectives: 1) To determine if atrial fibrillation is an independent risk factor for CRAO after adjusting for medical and cardiovascular risk; 2) To determine if use of oral anticoagulation can modify the risk of CRAO for patients with atrial fibrillation. This protocol lays out our strategy for cohort definition, case and control definition, comorbidity ascertainment, and statistical methods.