Background: Cardiac rehabilitation (CR) improves outcomes in heart disease yet remains vastly underutilized. Remote CR enhanced with a digital health intervention (DHI) may offer higher access and improved patient-centered outcomes over non-technology approaches. We sought to pragmatically determine whether offering a DHI improves CR access, cardiac risk profile, and patient-reported outcome measures. Methods: Adults referred to CR at a tertiary VA medical center between October 2017 and December 2021 were offered enrollment into a DHI alongside other CR modalities using shared decision-making. The DHI consisted of remote CR with a structured, 3-month home exercise program enhanced with multi-component coaching, a commercial smartphone app, and wearable activity tracker. We measured completion rates among DHI participants and evaluated changes in 6-min walk distance, cardiovascular risk factors, and patient-reported outcomes from pre- to post-intervention. Results: Among 1,643 patients referred to CR, 258 (16%) consented to the DHI where the mean age was 60 ± 9 years, 93% were male, and 48% were black. A majority (90%) of the DHI group completed the program. Over 3-months, significant improvements were seen in 6MWT (mean difference [MD] -29 m; 95% CI, 10 to 49; P < 0.01) and low-density lipoprotein cholesterol (MD -11 mg/dL; 95% CI, -17 to -5; P < 0.01), and the absolute proportion of patients who reported smoking decreased (10% vs 15%; MD, -5%; 95% CI, -8% to -2%; P < 0.01) among DHI participants with available data. No adverse events were reported. Conclusions: The addition of a DHI-enhanced remote CR program was delivered in 16% of referred veterans and associated with improved CR access, markers of cardiovascular risk, and healthy behaviors in this real-world study. These findings support the continued implementation of DHIs for remote CR in real-world clinical settings. Trial registration: This trial was registered on ClinicalTrials.gov: NCT02791685 (07/06/2016).

Background: Supervised exercise therapy (SET) is recommended in patients with symptomatic peripheral arterial disease (PAD) as first‐line therapy, although patient adoption remains low. Home‐based exercise therapy (HBET) delivered through smartphones may expand access. The feasibility of such programs, especially in low‐resource settings, remains unknown.Methods: Smart Step is a pilot randomized trial of smartphone‐enabled HBET vs walking advice in patients with symptomatic PAD in an inner‐city hospital. Participants receive a smartphone app with daily exercise reminders and educational content. A trained coach performs weekly phone‐based coaching sessions. All participants receive a Fitbit Charge HR 2 to measure physical activity. The primary outcome changes in 6‐minute walking test (6MWT) distance at 12 weeks over baseline. Secondary outcomes are the degree of engagement with the smartphone app and changes in health behaviors and quality of life scores after 12 weeks and 1 year.Results: A total of 15 patients are randomized as of December 15, 2019 with a mean (SD) age of 66.1 (5.8) years. The majority are female (60%) and black (87%). At baseline, the mean (SD) ABI and 6MWT were 0.86 (0.29) and 363.5 m, respectively. Enrollment is expected to continue until December 2020 to achieve a target size of 50 participants.Conclusions: The potential significance of this trial will be to provide preliminary evidence of a home‐based, “mobile‐first” approach for delivering a structured exercise rehabilitation program. Smartphone‐enabled HBET can be potentially more accessible than center‐based programs, and if proven effective, may have a potential widespread public health benefit.

Peripheral artery disease (PAD) is an atherosclerotic disease associated with significant functional impairment, morbidity, and mortality. Among women, PAD remains poorly recognized and undermanaged. Compared with men, women with PAD tend to be underdiagnosed or misdiagnosed, have poorer quality of life, and experience higher rates of PAD-related morbidity and cardiovascular mortality. In this review, we describe the sex- and gender-related differences in the epidemiology, presentation, diagnosis, and management of PAD. We provide specific recommendations to overcome these factors, including greater awareness and an increased emphasis on tailored and more aggressive interventions for women with PAD. Such changes are warranted and necessary to achieve more equitable outcomes in women with PAD, including improved limb outcomes, enhanced lifestyle, and cardiovascular risk reduction.