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Background The COVID-19 pandemic disrupted the way care is delivered to patients with chronic conditions such as heart failure (HF). Many outpatient encounters are now conducted virtually via telehealth. Whether virtual visit for HF results in similar type of interventions as when the patient is seen in person is not known. Methods Starting on March 15, 2020, all non-time sensitive outpatient in-person appointments at our institution were cancelled and transitioned to virtual appointments where possible. We included all patients seen in a tertiary care HF clinic from February 18 to March 13 (pre-Covid) and from March 16 to May 15 (post-COVID). We examined the volume of in-person and virtual visits and compared medication titration rates pre- and post-COVID. Results The study cohort included 745 patients, mean age 60.7+/-15.3 years, 65.2% male, 80.9% Caucasian, 7.7% Hispanic/Latino. Of these, 227 patients were seen pre-COVID and 518 post-COVID. All appointments were in-person pre-COVID. After the change, only 18% of appointments were in-person while 82% were virtual. Outpatient volume decreased after March 15, but gradually increased, eventually to volumes that exceeded pre-COVID (Figure). Detailed results on medication titration are shown in Table. Diuretic titration took place in 33/227 (14.5%) of patients pre-COVID and 83/518 (16.0%) post-COVID (p=NS). Among 567 patients with HF with reduced ejection fraction (HFrEF), titration of guideline-directed medical therapy (GDMT) took place in 86/172 (50.0%) of patients pre-COVID and 159/395 (40.2%) post-COVID (p=0.03). Among the 395 HFrEF patients seen post-COVID, GDMT was titrated in 33/68 (48.5%) patients seen in person and 126/327 (38.5%) seen virtually - p=0.13. Barriers to medication titration in virtual visits were lack of blood pressure readings and lack of recent laboratory results. Conclusion Telehealth has become an essential method of outpatient care delivery for chronic HF. Once implemented, it offered efficiencies including improved access to the HF clinic thanks to higher throughput capacity compared to physical clinic space. However, we identified that GDMT titration took place less frequently than during in-person visits. Since it is anticipated that telehealth use will continue into the future, approaches to maximize GDMT in the absence of traditional direct physical contact with HF patients are needed.

Background: Impaired qualitative and quantitative left ventricular (LV) rotational mechanics predict cardiac remodeling progression and prognosis after myocardial infarction. We investigated whether cardiac rotational mechanics can predict cardiac recovery in chronic advanced cardiomyopathy patients. Methods and Results: Sixty-three patients with advanced and chronic dilated cardiomyopathy undergoing implantation of LV assist device (LVAD) were prospectively investigated using speckle tracking echocardiography. Acute heart failure patients were prospectively excluded. We evaluated LV rotational mechanics (apical and basal LV twist, LV torsion) and deformational mechanics (circumferential and longitudinal strain) before LVAD implantation. Cardiac recovery post-LVAD implantation was defined as (1) final resulting LV ejection fraction ≥40%, (2) relative LV ejection fraction increase ≥50%, (iii) relative LV end-systolic volume decrease ≥50% (all 3 required). Twelve patients fulfilled the criteria for cardiac recovery (Rec Group). The Rec Group had significantly less impaired pre-LVAD peak LV torsion compared with the Non-Rec Group. Notably, both groups had similarly reduced pre-LVAD LV ejection fraction. By receiver operating characteristic curve analysis, pre-LVAD peak LV torsion of 0.35 degrees/cm had a 92% sensitivity and a 73% specificity in predicting cardiac recovery. Peak LV torsion before LVAD implantation was found to be an independent predictor of cardiac recovery after LVAD implantation (odds ratio, 0.65 per 0.1 degrees/cm [0.49–0.87]; P =0.014). Conclusions: LV rotational mechanics seem to be useful in selecting patients prone to cardiac recovery after mechanical unloading induced by LVADs. Future studies should investigate the utility of these markers in predicting durable cardiac recovery after the explantation of the cardiac assist device.

In dilated cardiomyopathy, a condition characterized by chamber enlargement and reduced myocardial contractility, decreases in β-adrenergic receptor density and increases in Gαi and β-adrenergic receptor kinase activities attenuate the stimulation of adenylyl cyclase in response to catecholamines. PDE3 inhibitors have been used to ‘overcome’ the reduction in cAMP generation by blocking cAMP hydrolysis. These drugs increase contractility in the short-term, but long-term administration leads to an increase in mortality that correlates with an increase in sudden cardiac death. Whether separate mechanisms account for these beneficial and harmful effects, and, if so, whether PDE3 can be targeted so as to increase contractility without increasing mortality are questions that remain unanswered.

Transesophageal echocardiogram (TEE) is considered the gold standard modality in detecting left atrial appendage (LAA) thrombi in patients with atrial fibrillation (AF). However, this is a semi-invasive procedure with potential life-threatening complications. Cardiac computed tomography (CCT) has