Electrophysiological evidence of right atrial epicardial connections in a case with recurrent common atrial flutter.

The majority of the cavotricuspid isthmus (CTI) region consists of discretely arranged muscle bundles separated by connective tissue. Heterogeneity in the anatomic arrangement of the muscle bundles results in differences in the endocardial and epicardial activation patterns. We present a case of recurrent atrial flutter (AFL) despite the presence of a complete endocardial CTI block.

The role of the renal resistance index in patients with heart failure with reduced or preserved ejection fraction.

Background: Renal impairment is a common phenomenon that portends a poor prognosis of heart failure (HF). The renal arterial resistance index (RRI) can be useful for defining renal function and predicting outcomes in patients with HF. This study aimed to investigate the determining factors of the RRI in HF patients with preserved ejection fraction (HFpEF) and with reduced EF (HFrEF).

Prognostic impact of electrocardiographic left ventricular hypertrophy following transcatheter aortic valve replacement.

Background: Left ventricular hypertrophy (LVH) develops with both structural and electrical remodeling in response to elevated afterload due to aortic stenosis (AS). This study evaluated the prognostic value of electrocardiographic LVH (ECG LVH) after transcatheter aortic valve replacement (TAVR).

Methods: A retrospective study including 157 consecutive patients who underwent TAVR was conducted.

Clinical Predictors of Coronary Artery Plaque Progression by Quantitative Serial Assessment Using 320-Row Computed Tomography Coronary Angiography in Asymptomatic Patients with Type 2 Diabetes Mellitus.

Background: Natural history of coronary plaque progression (PP) in patients with diabetes mellitus (DM) remains unclear. This study aimed to investigate the clinical predictors of coronary PP in patients with DM.

Methods: In this prospective observational study, we analyzed 70 asymptomatic patients (age, 64.