Evaluation of Measure Dx, a Resource to Accelerate Diagnostic Safety Learning and Improvement.

BACKGROUND: Several strategies have been developed to detect diagnostic errors for organizational learning and improvement. However, few health care organizations (HCOs) have integrated these strategies into routine operations. To address this gap, the Agency for Healthcare Research and Quality released "Measure Dx: A Resource To Identify, Analyze, and Learn From Diagnostic Safety Events" in 2022. OBJECTIVE: We conducted an evaluation of Measure Dx to measure feasibility of implementation and effects on short-term and intermediate outcomes related to diagnostic safety. DESIGN: Prospective observational study. PARTICIPANTS: Teams from 11 HCOs, primarily academic medical centers. INTERVENTIONS: Participants were asked to use Measure Dx over approximately 6 months and attend monthly virtual learning collaborative sessions to share and discuss approaches to measuring diagnostic safety. MAIN MEASURES: Descriptive outcomes were gathered at the HCO level and included uptake of different case-finding strategies and the number of cases reviewed and confirmed to have diagnostic safety improvement opportunities. We collected information on organizational practices related to diagnostic safety at each HCO at baseline and at the conclusion of the project. KEY RESULTS: The 11 HCOs completed all requirements for the evaluation. Each of the four diagnostic safety case finding strategies outlined in Measure Dx were used by at least three HCOs. Across the cohort, participants reviewed 703 cases using a standardized data collection instrument. Of those cases, 224 (31.8%) were identified as diagnostic safety events with improvement opportunities. Unexpectedly, self-ratings on the checklist assessment declined for several organizations. CONCLUSIONS: Use of Measure Dx can help accelerate implementation of systematic approaches to diagnostic error measurement and learning across a variety of HCOs, while potentially enabling HCOs to identify opportunities to improve diagnostic safety practices.

Strategies for equity, diversity and inclusion in geriatric healthcare professional curricula: A scoping review protocol.

INTRODUCTION: The pursuit of Equity, Diversity and Inclusion (EDI) in healthcare education has garnered significant attention in recent years, reflecting a broader societal imperative for equitable healthcare delivery. However, existing curricula within geriatric healthcare education may not adequately address these diverse needs within their educational frameworks, inadvertently resulting in disparities in care delivery and outcomes. Within the realm of geriatric healthcare, addressing EDI is particularly crucial due to the diverse needs of older adult populations and the imperative for healthcare professionals to deliver culturally humble care. This review provides a comprehensive overview of strategies and curricular strategies, actions and/or initiatives to promote EDI within geriatric healthcare professional education. METHODS: This paper presents a protocol for a forthcoming scoping review. The methodology for this scoping review adheres to the framework outlined in the Joanna Briggs Institute (JBI) Manual, encompassing four main stages: (1) formulation of a search strategy, (2) screening and selection of evidence, (3) data extraction, and (4) analysis. We will conduct a comprehensive search of peer-reviewed and empirical literature. Additionally, we will explore the reference lists of included studies to identify any relevant sources. The synthesis of findings will be conducted through a narrative approach. Reporting of the methods and results will adhere to the guidelines provided by the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). DISCUSSION: Healthcare professionals must possess the knowledge, skills, and attitudes necessary to deliver culturally humble care that respects and responds to diverse older adults' unique needs and preferences. The review aims to fill a crucial gap in the literature by providing a comprehensive overview of strategies and curricular interventions designed to promote EDI within geriatric healthcare professional education. By mapping these strategies, actions and/or initiatives, the review seeks to identify trends, challenges, and opportunities for advancing EDI within geriatric care. The forthcoming review serves as a call to action for educators, healthcare institutions, and decision makers to prioritize EDI within geriatric healthcare education. The review identifies effective strategies and interventions for promoting EDI, providing actionable insights to inform the development of inclusive curricula, training programs, and institutional policies, which can contribute to cultivating a healthcare workforce better equipped to address the complex and evolving needs of aging populations equitably and compassionately.

Evaluating progress and accountability for achieving COP26 Health Programme international ambitions for sustainable, low-carbon, resilient health-care systems.

A global initiative to develop low-carbon, resilient health systems-the COP26 Health Programme-launched at the UN Framework Convention on Climate Change 26th Conference of the Parties (COP26) in 2021. As of May, 2024, 83 nations have committed to participate in this initiative. This analysis evaluates the effectiveness of existing and proposed indicators towards public monitoring and accountability to these commitments. Our findings reveal substantial gaps in data availability and indicator relevance, with many countries reporting process indicators that do not reflect actual progress towards achieving sustainable health-care systems. We found a dearth of suitable indicators and an urgent need to develop robust ones that are adaptable to different health-care system contexts. These indicators should be designed to capture tangible outcomes, support policy making, and prevent greenwashing. Integration of more robust indicators into independent scientific monitoring can support systematic inclusion of health care in global climate strategies, thereby enhancing the overall effectiveness of the COP26 Health Programme.

Application of a digital quality measure for cancer diagnosis in Epic Cosmos.

OBJECTIVES: Missed and delayed cancer diagnoses are common, harmful, and often preventable. We previously validated a digital quality measure (dQM) of emergency presentation (EP) of lung cancer in 2 US health systems. This study aimed to apply the dQM to a new national electronic health record (EHR) database and examine demographic associations. MATERIALS AND METHODS: We applied the dQM (emergency encounter followed by new lung cancer diagnosis within 30 days) to Epic Cosmos, a deidentified database covering 184 million US patients. We examined dQM associations with sociodemographic factors. RESULTS: The overall EP rate was 19.6%. EP rate was higher in Black vs White patients (24% vs 19%, P < .001) and patients with younger age, higher social vulnerability, lower-income ZIP code, and self-reported transport difficulties. DISCUSSION: We successfully applied a dQM based on cancer EP to the largest US EHR database. CONCLUSION: This dQM could be a marker for sociodemographic vulnerabilities in cancer diagnosis.

Peer support provider and recipients' perspectives on compassion in virtual peer support stroke programs: "You can't really be supportive without compassion".

BACKGROUND: Peer support programs demonstrate numerous benefits, including emotional, instrumental, informational, and affirmational social support. Since the COVID-19 pandemic, many peer support stroke programs in Canada have been delivered virtually. Compassion must be consistently applied to build meaningful interactions, but the shift to virtual services may have changed the quality of interaction and compassion in virtual services. While compassion is recommended in health and social services to improve outcomes, satisfaction, and service quality, compassion in virtual peer support stroke programs remains understudied. We aimed to describe compassionate support in virtual peer support stroke programs from peer support providers' and recipients' perspectives. METHODS: This qualitative descriptive study was guided by Sinclair & colleagues' model of compassion. Peer support recipients or peer support providers participated in interviews transcribed and analyzed using a hybrid thematic analysis. RESULTS: Sixteen were peer support recipients, six were peer support providers, and two were both peer support providers and recipients. Participants agreed that compassion was essential in these programs. Participants perceived compassion to be a result of the virtues of compassionate facilitators (i.e., genuineness, passion, and empathy), relational space, and communication within the virtual peer support stroke program (e.g., sense of awareness or intuition of compassion, aspects of engaged peer support provision), virtuous response (e.g., knowing the person and actions that made the peer support recipient feel like a priority). Compassion was facilitated by listening and understanding peer support recipients' needs as they relate to stroke (i.e., seeking to understand peer support recipients and their needs), attending to peer support recipients' needs (e.g., timely actions to address their needs), and achieving compassion-related program outcomes (e.g., alleviating challenges and enhancing wellbeing). The absence of these components (e.g., lacking genuineness, passion and empathy) was a barrier to compassion in virtual peer support stroke programs. CONCLUSIONS: Study findings describe facilitators and barriers to perceived compassion in virtual peer support stroke programs and provide practical recommendations that can be adapted into programs to improve program quality.

Communicating blood test results in primary care: a mixed methods systematic review.

Background Test result communication is important for patient-centred care, patient safety and primary care workload. Evidence is needed to ensure that test results are communicated safely and efficiently to patients in primary care. Aim To summarize existing evidence for blood test result communication between primary care providers and their patients and carers. Design and setting Mixed-methods systematic review Methods Medline, Embase, PsycINFO (Ovid); CINAHL (ESCOHost); and the Cochrane Library were searched from 2013 to September 2023. Primary studies of any design that provided information on the communication of blood test results by primary care staff to adult patients and carers were eligible for inclusion. Results There were 71 included studies, including 10 experimental studies and no randomized controlled trials. Study quality was mostly poor and risk of bias was high, partly due to a lack of reported information. Patients want more information about their blood test results, particularly in terms of 'what next', and prefer results to be provided quickly. Electronic methods such as online access or text messages were generally well accepted but not by everyone, and not for all results. Clinicians' opinions were mixed as to whether more information and direct release of test results to patients without clinician input was beneficial or could cause problems, such as increased workload. Conclusions We have identified a range of evidence on patient and clinician preferences, barriers and facilitators to test communication, which is particularly important in the current NHS context of a move towards patient online access.

Maximizing the Ability of Health IT and AI to Improve Patient Safety.

This Viewpoint discusses how health information technology (IT) and artificial intelligence (AI) can be used to transform patient safety.

Interventions to improve timely cancer diagnosis: an integrative review.

Cancer will affect more than one in three U.S. residents in their lifetime, and although the diagnosis will be made efficiently in most of these cases, roughly one in five patients will experience a delayed or missed diagnosis. In this integrative review, we focus on missed opportunities in the diagnosis of breast, lung, and colorectal cancer in the ambulatory care environment. From a review of 493 publications, we summarize the current evidence regarding the contributing factors to missed or delayed cancer diagnosis in ambulatory care, as well as evidence to support possible strategies for intervention. Cancer diagnoses are made after follow-up of a positive screening test or an incidental finding, or most commonly, by following up and clarifying non-specific initial presentations to primary care. Breakdowns and delays are unacceptably common in each of these pathways, representing failures to follow-up on abnormal test results, incidental findings, non-specific symptoms, or consults. Interventions aimed at 'closing the loop' represent an opportunity to improve the timeliness of cancer diagnosis and reduce the harm from diagnostic errors. Improving patient engagement, using 'safety netting,' and taking advantage of the functionality offered through health information technology are all viable options to address these problems.

Machine Learning to Enhance Electronic Detection of Diagnostic Errors.

This cohort study examines whether machine learning (ML) can enhance the ability of electronic triggers to identify possible missed opportunities in diagnosis.

Her2-positive breast cancer in a young patient with Li-Fraumeni syndrome: A comprehensive case study.

INTRODUCTION AND IMPORTANCE: Li-Fraumeni syndrome (LFS) is a rare hereditary disorder caused by mutations in the TP53 gene, leading to a significantly increased risk of developing various cancers at a young age, including breast cancer. CLINICAL PRESENTATION: This case report details the clinical journey of a 21-year-old female diagnosed with Grade 3 invasive ductal carcinoma, which was estrogen receptor low positive and progesterone receptor negative but positive for Her2 (3+) with a high Ki67 proliferation index. CLINICAL DISCUSSION: Genetic testing confirmed a TP53 mutation, establishing the diagnosis of LFS. The patient underwent neoadjuvant chemotherapy with TCHP (docetaxel, carboplatin, trastuzumab, pertuzumab), resulting in a complete clinical response. This was followed by bilateral skin-sparing and nipple-sparing mastectomy with sentinel lymph node biopsy and immediate reconstruction. Postoperative pathology confirmed a complete response to neoadjuvant therapy. The patient's treatment plan includes 12 cycles of trastuzumab and pertuzumab, with regular echocardiograms to monitor cardiac function and fertility preservation strategies involving monthly Lupron injections. Given the association of LFS with a high risk of multiple primary cancers, a rigorous surveillance strategy is essential. The psychological impact of a cancer diagnosis and the burden of living with a hereditary cancer syndrome were significant, necessitating comprehensive psychosocial support. CONCLUSION: Managing Li-Fraumeni syndrome (LFS) and its associated cancers, particularly in young patients, necessitates a comprehensive and multidisciplinary approach. Early genetic testing for TP53 mutations is crucial in identifying LFS, enabling personalized treatment plans and proactive surveillance strategies.

Charting Diagnostic Safety: Exploring Patient-Provider Discordance in Medical Record Documentation.

BACKGROUND: The 21st Century Cures Act enables patients to access their medical records, thus providing a unique opportunity to engage patients in their diagnostic journey. OBJECTIVE: To explore the concordance between patients' self-reported diagnostic concerns and clinician-interpreted information in their electronic health records. DESIGN: We conducted a mixed-methods analysis of a cohort of 467 patients who completed a structured data collection instrument (the Safer Dx Patient) to identify diagnostic concerns while reviewing their clinician's notes. We conducted a qualitative content analysis of open-ended responses on both the tools and the case summaries. Two clinical chart reviewers, blinded to patient-reported diagnostic concerns, independently conducted chart reviews using a different structured instrument (the Revised Safer Dx Instrument) to identify diagnostic concerns and generate case summaries. The primary outcome variable was chart review-identified diagnostic concerns. Multivariate logistic regression tested whether the primary outcome was concordant with patient-reported diagnostic concerns. SETTING: Geisinger, a large integrated healthcare organization in rural and semi-urban Pennsylvania. PARTICIPANTS: Cohort of adult patients actively using patient portals and identified as "at-risk" for diagnostic concerns using an electronic trigger algorithm based on unexpected visit patterns in a primary care setting. RESULTS: In 467 cohort patients, chart review identified 31 (6.4%) diagnostic concerns, of which only 11 (21.5%) overlapped with 51 patient-reported diagnostic concerns. Content analysis revealed several areas of discordant understanding of the diagnostic process between clinicians and patients. Multivariate logistic regression analysis showed that clinician-identified diagnostic concerns were associated with patients who self-reported "I feel I was incorrectly diagnosed during my visit" (odds ratio 1.65, 95% CI 1.17-2.3, p < 0.05). CONCLUSION: Patients and clinicians appear to have certain differences in their mental models of what is considered a diagnostic concern. Efforts to integrate patient perspectives and experiences with the diagnostic process can lead to better measurement of diagnostic safety.

Whose Job is it Anyway? A Qualitative Study of Providers' Perspectives on Diagnosing Anxiety Disorders in Integrated Health Settings.

Up to 33% of American adults will experience a diagnosable anxiety disorder in their lifetime. Approximately one-third of anxiety diagnoses assigned by mental health providers in outpatient settings are unspecified. The tendency of many providers to use an unspecified anxiety diagnosis may negatively impact the provision of evidence-based treatments for specific anxiety disorders. This study examines the perspectives of mental health providers working in an integrated and stepped health care system, asking how their roles and responsibilities shape their practices related to diagnosing specific anxiety disorders. The authors conducted semi-structured interviews with 32 Veteran Health Administration (VHA) mental health providers to understand their perspectives on diagnosing anxiety disorders. Matrix analysis was used to identify different roles and responsibilities articulated. Thematic analysis was used to highlight themes across providers' discussion of their roles in diagnosing and treating patients. The results show that, for most providers, assigning a specific diagnosis is a component of duties but rarely their focus. Second, it is unclear in which clinic setting a specific anxiety diagnosis should be made. Finally, among different types of mental health professionals, there is no clear designation on who should be providing a specific anxiety diagnosis. Altogether, results indicate that many providers feel making a specific diagnosis for anxiety is the responsibility of others-either those in other clinic settings or with other credentials. Findings call for clearer guidelines that specify individual clinician accountability for obtaining a specific anxiety diagnosis in a team-based environment.

A rapid review protocol of physiotherapy and occupational therapy telerehabilitation to inform ethical and equity concerns.

Background: Telerehabilitation (TR) has emerged as a feasible and promising approach for delivering rehabilitation services remotely, utilizing technology to bridge the gap between healthcare providers and patients. As new modalities of virtual care and health technologies continue to emerge, it is crucial to stay informed about the growing landscape of virtual care to ensure that telehealth service delivery is ethical and equitable, and improves the quality of services and patient outcomes. Objective: The primary objective of this article is to present the protocol of a rapid review to examine the equity-related aspects surrounding the implementation of TR. This includes a comprehensive analysis of the ethical dimensions and fairness concerns linked to this practice. Methods: A rapid review protocol was developed in accordance with Cochrane Rapid Reviews Methods Guidance. Medline and EMBASE databases were searched between January 2010 and March 2023. Study selection and data extraction will be conducted in two phases (Phase I) by two independent reviewers and subsequently (Phase II) by a single reviewer. Our study will utilize the PROGRESS-Plus and Equitable virtual rehabilitation in the metaverse era framework to identify dimensions where potential inequities may exist within TR interventions. Results: This rapid review is anticipated to enhance our knowledge of TR in the fields of physiotherapy and occupational therapy, with a specific focus on its influence on ethical and equitable practices and providing a foundation for informed decision-making and improved patient care. Conclusion: This rapid review will contribute to the advancement of our understanding of TR within physiotherapy and occupational therapy. Through synthesizing existing evidence, this study not only addresses current gaps in knowledge but also offers valuable insights for future research and clinical practice in TR services.

Health Care Actions for Reducing Plastic Use and Pollution.

This Viewpoint proposes a comprehensive sociotechnical approach spanning the entire plastics life cycle to reduce plastic use and pollution in health care.

A Rare Case of Idiopathic Reversible Cerebral Vasoconstriction Syndrome.

BACKGROUND Reversible cerebral vasoconstriction syndrome (RCVS) is a rare disease that is classified as a condition of diffuse cerebral artery constriction. RCVS can be complicated with transient neurological deficits, seizures, ischemic strokes, and hemorrhagic strokes. A thunder-clap headache, described as being the worst headache a patient can experience, is the predominant symptom in RCVS, which contributes to why RCVS is underdiagnosed as an ischemic stroke or migraine. CASE REPORT In this case study, we present a healthy 34-year-old Black woman who presented to the Emergency Department 3 times over a period of 4 days with concerns of severe headaches. In her first Emergency Department visit, she had a normal computed tomography scan of the brain. Her third Emergency Department visit resulted in hospitalization due to seizures, and a computed tomography brain scan done then showed acute intracranial hemorrhaging. The patient ultimately received a diagnosis of RCVS during her hospitalization. CONCLUSIONS RCVS is the most notable mimicker of other similar-presenting vasculopathies, such as primary angiitis of the central nervous system and posterior reversible encephalopathy syndrome. It is important to note that thunder-clap headache, as well as complications such as intracranial hemorrhaging and seizures, can arise not just from other diseases but from RCVS as well; hence, an early diagnosis is critical to avoid complications, especially if initial imaging is negative.

A unique intersection: Exploring an exophytic, pedunculated hepatic hemangioma with gastric connection in a case report.

Hepatic hemangiomas are commonly benign liver tumors, typically asymptomatic and predominantly located in the right lobe. This case report details an exceptional instance of a left-lobe hepatic hemangioma manifesting as an exophytic, pedunculated mass resembling a gastric tumor. A 77-year-old woman with a history of melanoma presented with a mass incidentally discovered during evaluations for chest pain. Advanced imaging techniques, including computed tomography (CT) and endoscopic ultrasound (EUS), identified this mass as a benign, pedunculated hemangioma extending from the left hepatic lobe toward the gastric fundus. Given the tumor's benign nature and the patient's lack of symptoms, a conservative management approach was adopted. This case emphasizes the importance of accurate imaging and diagnostic assessment in managing atypical hepatic hemangiomas, highlighting the need to carefully consider rare growth patterns and locations in differential diagnoses to avoid unnecessary interventions. Such cases reinforce the complexity of diagnosing and managing unusual presentations of common benign tumors.

How is diagnostic uncertainty communicated and managed in real world primary care settings?

BACKGROUND: Managing diagnostic uncertainty is a major challenge in primary care due to factors such as the absence of definitive tests, variable symptom presentations and disease evolution. Maintaining patient trust during a period of investigative uncertainty, whilst minimising scope for diagnostic error is a challenge. Mismanagement can lead to diagnostic errors, treatment delays, and suboptimal patient outcomes. OBJECTIVE: Our aim was to explore how UK primary care physicians (GPs) address and communicate diagnostic uncertainty in practice. DESIGN: This qualitative study used video and audio-recordings. Verbatim transcripts were coded with a modified, validated tool to capture GPs' actions and communication in primary care consultations that included diagnostic uncertainty. The tool includes items relating to advice regarding new symptoms or symptom deterioration (sometimes called 'safety netting'). Video data was analysed to identify GP and patient body postures during and after the delivery of the management plan. PARTICIPANTS: All patient participants had a consultation with a GP, were over the age of 50 and had (1) at least one new presenting problem or (2) one persistent problem that was undiagnosed. APPROACH: Data collection occurred in GP-patient consultations during 2017-2018 across 7 practices in UK during 2017-2018. KEY RESULTS: GPs used various management strategies to address diagnostic uncertainty, including (1) symptom monitoring without treatment, (2) prescribed treatment with symptom monitoring, and (3) addressing risks that could arise from administrative tasks. GPs did not make management plans for potential treatment side effects. Specificity of uncertainty management plans varied among GPs, with only some offering detailed actions and timescales. The transfer of responsibility for the management plan to patients was usually delivered rather than negotiated, with most patients confirming acceptance before concluding the discussion. CONCLUSIONS: We offer guidance to healthcare professionals, improving awareness of using and communicating management plans for diagnostic uncertainty.

Diagnostic Discordance, Uncertainty, and Treatment Ambiguity in Community-Acquired Pneumonia : A National Cohort Study of 115 U.S. Veterans Affairs Hospitals.

BACKGROUND: Evidence-based practice in community-acquired pneumonia often assumes an accurate initial diagnosis. OBJECTIVE: To examine the evolution of pneumonia diagnoses among patients hospitalized from the emergency department (ED). DESIGN: Retrospective nationwide cohort. SETTING: 118 U.S. Veterans Affairs medical centers. PATIENTS: Aged 18 years or older and hospitalized from the ED between 1 January 2015 and 31 January 2022. MEASUREMENTS: Discordances between initial pneumonia diagnosis, discharge diagnosis, and radiographic diagnosis identified by natural language processing of clinician text, diagnostic coding, and antimicrobial treatment. Expressions of uncertainty in clinical notes, patient illness severity, treatments, and outcomes were compared. RESULTS: Among 2 383 899 hospitalizations, 13.3% received an initial or discharge diagnosis and treatment of pneumonia: 9.1% received an initial diagnosis and 10.0% received a discharge diagnosis. Discordances between initial and discharge occurred in 57%. Among patients discharged with a pneumonia diagnosis and positive initial chest image, 33% lacked an initial diagnosis. Among patients diagnosed initially, 36% lacked a discharge diagnosis and 21% lacked positive initial chest imaging. Uncertainty was frequently expressed in clinical notes (58% in ED; 48% at discharge); 27% received diuretics, 36% received corticosteroids, and 10% received antibiotics, corticosteroids, and diuretics within 24 hours. Patients with discordant diagnoses had greater uncertainty and received more additional treatments, but only patients lacking an initial pneumonia diagnosis had higher 30-day mortality than concordant patients (14.4% [95% CI, 14.1% to 14.7%] vs. 10.6% [CI, 10.4% to 10.7%]). Patients with diagnostic discordance were more likely to present to high-complexity facilities with high ED patient load and inpatient census. LIMITATION: Retrospective analysis; did not examine causal relationships. CONCLUSION: More than half of all patients hospitalized and treated for pneumonia had discordant diagnoses from initial presentation to discharge. Treatments for other diagnoses and expressions of uncertainty were common. These findings highlight the need to recognize diagnostic uncertainty and treatment ambiguity in research and practice of pneumonia-related care. PRIMARY FUNDING SOURCE: The Gordon and Betty Moore Foundation.

Hospital commitments to address diagnostic errors: An assessment of 95 US hospitals.

BACKGROUND: Diagnostic errors are a leading cause of patient harm. In 2022, the Leapfrog Group published a report containing 29 evidence-based practices that hospitals can adopt to reduce diagnostic errors. OBJECTIVES: To understand the extent to which US hospitals have already implemented these practices, we conducted a national pilot survey of Leapfrog-participating hospitals. METHODS: To reduce respondent burden, we divided the 29 practices across two surveys: one focused on organizational culture and structure (Domain 1), and the second focused on the diagnostic process itself (Domain 2). RESULTS: A total of 95 hospitals from 23 states responded to one or both surveys. On average, hospitals reported implementing 9 of the 16 practices (56%) in Domain 1 and 8 of the 13 practices (62%) in Domain 2. The rate of practice implementation varied greatly, with some hospitals implementing as few as three practices in their domain. The most commonly implemented practices were ensuring access to medical interpreters, continuous access to radiologists, ensuring staff and patients can report diagnostic errors and concerns, and having a formal process to identify and notify patients when diagnostic errors occur. The least implemented practices included convening a multidisciplinary team focused on diagnostic safety and quality, a CEO commitment to diagnostic excellence, conducting diagnosis-focused risk assessments, and training clinicians to optimize clinical reasoning in the diagnostic process. CONCLUSIONS: The findings suggest large and important implementation gaps for practices related to diagnostic excellence and can inform new initiatives to promote diagnostic excellence in US hospitals.