Non-ischemic dilated cardiomyopathy (DCM) represents a significant cause of heart failure, defined as the presence of left ventricular (LV) dilatation and systolic dysfunction unexplained solely by abnormal loading conditions or coronary artery disease. Cardiac resynchronization therapy (CRT) has emerged as a cornerstone in the management of heart failure, particularly in patients with DCM. However, identifying patients who will benefit the most from CRT remains challenging. Speckle tracking echocardiography (STE) has garnered attention as a non-invasive imaging modality that allows for the quantitative assessment of myocardial mechanics, offering insights into LV function beyond traditional echocardiographic parameters. This comprehensive review explores the role of STE in guiding patient selection and optimizing outcomes in CRT for DCM. By assessing parameters such as LV strain, strain rate, and dyssynchrony, STE enables a more precise evaluation of myocardial function and mechanical dyssynchrony, aiding in the identification of patients who are most likely to benefit from CRT. Furthermore, STE provides valuable prognostic information and facilitates post-CRT optimization by guiding lead placement and assessing response to therapy. Through an integration of STE with CRT, clinicians can enhance patient selection, improve procedural success rates, and ultimately, optimize clinical outcomes in patients with DCM. This review underscores the pivotal role of STE in advancing personalized management strategies for DCM patients undergoing CRT.

Despite significant advancements in medical therapy, heart failure with reduced ejection fraction (HFrEF) continues to be a significant cause of death and disability. Reversible ischaemic left ventricular dysfunction due to viable myocardium is one such contributing factor. In these cases, coronary revascularization has shown promise in improving left ventricular function and prognosis. For patients with HFrEF and wide QRS, cardiac resynchronization therapy (CRT) is an effective option to address electromechanical dyssynchrony. However, approximately 30% of patients do not respond positively to CRT, highlighting the need to refine candidate selection for this treatment. In some patients with reduced HFrEF, there is a condition known as classical low-flow, low-gradient aortic stenosis (AS) that may be observed. This condition is characterized by a low transaortic flow, which leads to reductions in both the transaortic mean gradient and aortic valve area. Decision-making regarding revascularization, CRT, and pharmacological treatment play a crucial role in managing HFrEF. Cardiac imaging can be valuable in guiding decision-making processes and assessing the prognosis of patients with HFrEF. Among the imaging modalities, dobutamine stress echocardiography has come a long way in establishing itself as a feasible, safe, effective, relatively cheap non-invasive technique. The aim of this review is to explore the current literature on the utility of low-dose stress echocardiography in diagnosing and prognosticating patients with HFrEF.

Background/Objectives: Telemedicine (TM) has emerged as a promising tool for improving heart failure (HF) management by allowing non-invasive, remote patient monitoring. However, patient adherence to TM plays a critical role in its effectiveness. This systematic review aims to assess adherence levels to non-invasive TM interventions and explore factors influencing compliance. Methods: This systematic review followed the PRISMA guidelines. A literature search was conducted across the PubMed, Medline, Web of Science, and Google Scholar databases to identify prospective randomized controlled trials published between January 2010 and June 2024. The inclusion criteria included studies focused on non-invasive TM in HF patients with a follow-up period longer than three months. Adherence rates were categorized as high (≥80%), moderate (60–79%), or low (<60%). Results: Of the 136 identified studies, 6 met the inclusion criteria. Three studies reported high adherence (>80%), and three moderate adherence (60–79%). Older patients (≥65 years) showed higher adherence, with two studies exceeding 85% adherence. Studies with higher female participation (>30%) reported better adherence, with two exceeding 88%. Across studies, a lack of racial diversity was especially notable, apart from a study that included a population with 69% black and 31% Hispanic participants, where adherence was 50% for ≥10 uploads over a 90-day period. Seasonal variations affected adherence, with December being the lowest (47–69%) and August the highest (>85%). Monitoring multiple health parameters correlated with better adherence (>85%) compared to single-parameter tracking (50–74%). Conclusions: TM is a promising tool for HF management, but adherence differs by age, sex, and the complexity of monitoring. To optimize TM use, standardized adherence measures and tailored strategies are needed.