Citations

Introduction: Renal accessory arteries originate at the aorta and deliver renal blood flow independent of the main renal artery, while renal artery branches originate from and their flow depends on the main renal artery. However, the clinical significance of accessory arteries remains unclear. We tested the hypothesis that characteristics of renal accessory and/or branching arteries morphology are linked to resistant hypertension (RH). Methods: In a case-control study we compared the presence and characteristics of renal accessory and branching arteries (exposures) in individuals with RH (cases) vs. healthy kidney donors (normotensive controls) (Figure 1). Using MR angiography we calculated the length, diameter, tortuosity, and resistance (8*Length*blood viscosity)/(πr 4 )) of each artery (Figure 2). In separate logistic regression analyses we compared cases and controls for each of the following accessory or branching artery parameters: number of vessels, smallest diameter, length of longest vessel, greatest tortuosity, and greatest resistance. Results: We compared 89 unique RH cases to 248 unique normotensive controls (Table 1). For accessory arteries, their number was inversely related with RH (OR 0.38, 95% CI: 0.21 to 0.69, p<0.01), while length was mildly associated with RH (OR 1.06, 95% CI 1.00 to 1.13, p=0.04). Diameter and tortuosity were not associated in either direction. For branching arteries, RH was strongly associated with their diameter (OR 12.86, 95% CI 2.89 to 57.13, p<0.01), but more mildly and inversely with their resistance (OR 0.99, 95% CI: 0.97 to 1.00, p=0.01). The number and length of branching arteries were not associated in either direction. Conclusion: RH is strongly associated with a reduced number of accessory renal arteries and wider branching arteries, both being novel findings. Future longitudinal studies should determine if these changes are causally related to development of hypertension. Elucidation of this relationship may open new avenues for management of RH.

Abstract The environmental impact of computer-aided diagnosis (CADx) in colonoscopy is unknown. The potential to reduce greenhouse gas emissions by limiting unnecessary polypectomies may be offset by emissions associated with CADx devices. We quantified and compared the carbon footprint of colonoscopy with and without CADx. Life-cycle carbon emissions associated with endoscopic snares, polyp traps, histopathology, and CADx devices were estimated using life-cycle assessment software. The effect of CADx was estimated by the carbon dioxide equivalent (CO2e) emissions related to outcomes from a prospective cohort of patients who underwent colonoscopy with optical diagnosis under a leave-in-situ strategy (i.e. rectosigmoid polyps ≤5 mm predicted as non-neoplastic were not removed) with and without CADx assistance. We analyzed 1134 individuals (median age 67 years, 59% male) with 1716 colorectal polyps. Colonoscopy with CADx reduced the number of snares and polyp traps from 567 to 543 (difference: 24) and histopathology submissions from 1343 to 1278 (difference: 65). However, the total carbon footprint increased from 832 kg CO2e (95%CI 815 to 847) without CADx to 946 kg CO2e (95%CI 927 to 965) with CADx, corresponding to an absolute increase of 114 kg CO2e (95%CI 80 to 150) or 0.10 kg CO2e per colonoscopy. Using CADx under a leave-in-situ strategy increased the environmental burden of colonoscopy.

Importance Cardiovascular (CV) disease is the leading cause of death globally for both men and women, yet women remain historically underrepresented in CV clinical trials, despite facing a disproportionately high burden of morbidity and mortality in many forms of CV disease. Objective To determine the representation of women across a broad range of CV trials. Evidence Review The participation of women in CV trials registered on ClinicalTrials.gov from 2017 to 2023 was systematically determined through the extraction of publicly available information. Data were extracted to identify the country of study, disease type, trial size, clinical intervention, and age of the participants. The proportion of women and the ratio of number of female to male participants (F:M ratio) were calculated for each trial. The women’s participation:prevalence ratio (PPR) was estimated for each trial based on the relative prevalence of the disease by sex in the specified region. Findings A total of 1079 registered CV trials were identified, including 1 396 104 participants, of whom 571 641 (41.0%) were women. The F:M ratio was significantly lower for studies on arrhythmia (median [IQR], 0.5), coronary heart disease (median [IQR], 0.39 [0.33-0.70]), acute coronary syndrome (median [IQR], 0.32 [0.24-0.51]), and heart failure (median [IQR], 0.51 [0.32-0.87]) but higher for obesity (median [IQR], 1.44 [1.08-4.50]) and pulmonary hypertension (median [IQR], 2.86 [1.50-3.97]) trials. The F:M ratio was higher for trials on lifestyle interventions (median [IQR], 1.51 [0.77-3.24]) than for drug trials. PPRs were low for clinical trials on coronary heart disease (median [IQR], 0.66 [0.50-0.86]), acute coronary syndrome (median [IQR], 0.79 [0.51-0.87]), and stroke (median [IQR], 0.74 [0.61-0.95]). Representation of women in CV trials varied by disease state, region, intervention, and sponsor type. Conclusions and Relevance These findings highlight both progress and persistent challenges in representation of women within CV trials. These gaps not only limit the generalizability of trial outcomes but also perpetuate inequities in evidence-based care for women with CV conditions.

Key Points The growing knowledge of single-gene causes of pediatric-onset kidney diseases necessitates a structured application of genetic testing in practice. The clinical application of a combined nephrogenetics approach for management of kidney diseases is not well described in pediatric settings. Real-world application of a kidney genetics workflow highlights clinical value and challenges to be addressed for its successful implementation. Background The expanding knowledge of identifiable genetic contributions to pediatric inherited kidney diseases, and the increasing availability of genetic testing resources necessitates a combined nephrogenetics clinical approach. Although such models are described for adults, the effect of a structured nephrogenetics workflow on children with inherited kidney disease has not been rigorously evaluated. Methods Clinical and genetic data of patients aged younger than 1–21 years over a 10-year period between 2014 and 2024 from a single-center pediatric inherited kidney disease outpatient program were evaluated. Genetic variants were classified as pathogenic/likely pathogenic and variants of uncertain significance (VUS). Patients were grouped into “informative” or “uninformative” groups based on the effect of genetic test results on disease management and outcomes. Results Of the N =356 patients evaluated for a known or suspected inherited kidney disease, N =188 received clinical genetic testing. Of these, N =147 had an “informative” genetic test affecting at least one positive clinical outcome. Patients with an “informative” genetic test mostly harbored a pathogenic/likely pathogenic variant ( N =122). An additional N =25 had a VUS reclassified as a “VUS-of-interest” affecting a positive outcome measure. Genetic test results led to change in clinical diagnosis (reverse phenotyping, 46%), informed specific diagnosis-based treatment (46%), avoided unnecessary immunosuppression (27%) or kidney biopsy (18%), and guided extrarenal evaluation (72%) in patients with an informative test. Patients with a glomerular (odds ratio [OR]=5.23; 95% confidence interval [CI], 1.96 to 13.96) or a tubular functional disease (OR=2.17; 95% CI, 1.31 to 5.59) were more likely and those with a structural kidney disease (OR=0.39; 95% CI, 0.25 to 0.60) were less likely to receive a genetic test when compared with all other disease categories combined. Conclusions This workflow integrated multidisciplinary care for children with inherited kidney disease and describes a model for actionable clinical care plans after genetic testing. Informative genetic tests were associated with positive outcomes, and notable challenges include access to combined nephrology and genetics expertise for informed testing and an effective result return including VUS interpretation.

The translation of AI-generated brain metastases (BM) segmentation into clinical practice relies heavily on diverse, high-quality annotated medical imaging datasets. The BraTS-METS 2023 challenge has gained momentum for testing and benchmarking algorithms using rigorously annotated internationally compiled real-world datasets. This study presents the results of the segmentation challenge and characterizes the challenging cases that impacted the performance of the winning algorithms. Untreated brain metastases on standard anatomic MRI sequences (T1, T2, FLAIR, T1PG) from eight contributed international datasets were annotated in stepwise method: published UNET algorithms, student, neuroradiologist, final approver neuroradiologist. Segmentations were ranked based on lesion-wise Dice and Hausdorff distance (HD95) scores. False positives (FP) and false negatives (FN) were rigorously penalized, receiving a score of 0 for Dice and a fixed penalty of 374 for HD95. The mean scores for the teams were calculated. Eight datasets comprising 1303 studies were annotated, with 402 studies (3076 lesions) released on Synapse as publicly available datasets to challenge competitors. Additionally, 31 studies (139 lesions) were held out for validation, and 59 studies (218 lesions) were used for testing. Segmentation accuracy was measured as rank across subjects, with the winning team achieving a LesionWise mean score of 7.9. The Dice score for the winning team was 0.65 ± 0.25. Common errors among the leading teams included false negatives for small lesions and misregistration of masks in space. The Dice scores and lesion detection rates of all algorithms diminished with decreasing tumor size, particularly for tumors smaller than 100 mm3. In conclusion, algorithms for BM segmentation require further refinement to balance high sensitivity in lesion detection with the minimization of false positives and negatives. The BraTS-METS 2023 challenge successfully curated well- annotated, diverse datasets and identified common errors, facilitating the translation of BM segmentation across varied environments and providing the tools for future development of personalized volumetric reports to patients undergoing BM treatment.

Objective: Diabetes is a defining disease of the 21st century because of its rising prevalence, association with obesity, and enormous health impact. Abundant evidence shows that lifestyle interventions can delay or prevent type 2 diabetes (T2D) in adults, offer relief, and sometimes achieve complete remission. Despite this empowering message, there are no clinical practice guidelines that focus primarily on lifestyle interventions as first-line management of prediabetes and T2D. Our objective, therefore, is to offer pragmatic, trustworthy, and evidence-based guidance for clinicians in using the 6 pillars of lifestyle medicine—nutrition, physical activity, stress management, sleep, social connectedness, avoidance of risky substances—for managing adults with T2D and in preventing T2D in adults with prediabetes or a history of gestational diabetes mellitus. Methods: We used well-established, peer-reviewed guideline methodology to develop evidence-based key action statements (recommendations) that facilitate quality improvement in clinical practice. The guideline development group included 20 members representing consumers, advanced practice nursing, cardiology, clinical pharmacology, behavioral medicine, endocrinology, family medicine, lifestyle medicine, nutrition and dietetics, health education, health and wellness coaching, sleep medicine, sports medicine, and obesity medicine. Recommendation strength was based on the aggregate evidence supporting a key action statement plus a comparison of associated benefits vs harms/costs. Multiple literature searches, conducted by an information specialist, identified 8 relevant guidelines, 118 relevant systematic reviews, and 112 randomized clinical trials. The guideline underwent extensive internal, external, and public review and comment prior to publication. Results: We developed 14 key action statements and associated evidence profiles, each with a distinct quality improvement goal in the context of lifestyle interventions for T2D. Strong recommendations were made regarding advocacy for lifestyle interventions; assessing baseline lifestyle habits; establishing priorities for lifestyle change; prescribing aerobic and muscle strength physical activity; reducing sedentary time; identifying sleep disorders; prescribing nutrition plans for prevention and treatment; promoting peer/familial support and social connections; counseling regarding tobacco, alcohol, and recreational drugs, and establishing a plan for continuity of care. Recommendations were made regarding identifying the need for psychological interventions and for adjusting (deprescribing) pharmacologic therapy. We include numerous tables and figures to facilitate implementation, a plain-language summary for consumers, and an executive summary for clinicians as separate publications. Conclusions: There is robust research evidence supporting the efficacy of lifestyle interventions in preventing, treating, and achieving remission of T2D in adults. Our multidisciplinary guideline development group successfully synthesized this evidence into 14 key action statements that can be used by clinicians and other healthcare professionals to improve quality of care for adults with, or at-risk for, T2D. Despite the research gaps and implementation challenges we highlight in the guideline we believe strongly that our recommendations have immediate relevance and can help raise awareness and shift the paradigm of T2D management towards optimal use of lifestyle interventions.

This executive summary highlights evidence-based recommendations for using lifestyle interventions in the treatment and remission of type 2 diabetes (T2D) and prediabetes in adults. The summary and guideline are intended for any clinician or healthcare professional in a community or non-inpatient healthcare setting involved in managing non-pregnant adults with T2D, prediabetes or a history of gestational diabetes mellitus (GDM). The purpose of this executive summary is to provide a succinct overview of the key action statements (recommendations) from Lifestyle Interventions for Treatment and Remission of Type 2 Diabetes and Prediabetes in Adults: A Clinical Practice Guideline from the American College of Lifestyle Medicine. This is the first diabetes guideline to emphasize lifestyle interventions as the foundation of management and is also the first to focus on all six pillars of lifestyle medicine (plant-predomination nutrition, regular physical activity, restorative sleep, stress reduction, social connectedness, and avoiding risky substances), including behavior change strategies. This summary is not intended to substitute for the full guideline, which should be read before taking the recommended actions. The guideline on which this summary is based was developed with a priori methodology that has been previously published, refined, and used in over 20 multidisciplinary, trustworthy, and evidence-based national guidelines. The guideline development group included 20 members representing consumers, advanced practice nursing, cardiology, clinical pharmacology, behavioral medicine, endocrinology, family medicine, lifestyle medicine, nutrition and dietetics, health education, health and wellness coaching, sleep medicine, sports medicine, and obesity medicine. We developed 14 key action statements and associated evidence profiles, each with a distinct quality improvement goal in the context of lifestyle interventions for T2D. Strong recommendations were made regarding advocacy for lifestyle interventions; assessing baseline lifestyle habits; establishing priorities for lifestyle change; prescribing aerobic and muscle strength physical activity; reducing sedentary time; identifying sleep disorders; prescribing nutrition plans for prevention and treatment; promoting peer/familial support and social connections; counseling regarding tobacco, alcohol, and recreational drugs, and establishing a plan for continuity of care. Recommendations were made regarding identifying the need for psychological interventions and for adjusting (deprescribing) pharmacologic therapy. We include numerous tables and figures to facilitate implementation, a plain-language summary for consumers, and an executive summary for clinicians as separate publications. Although not a substitute for the full clinical practice guideline, this executive summary can provide insight into the key guideline recommendations, to whom they apply, and to how they might alter care. These recommendations offer detailed, explicit, and evidence-based strategies for successful lifestyle behavior change, making them relevant not only to our guideline but to other guidelines and standards that advocate for lifestyle change in managing adults with T2D.