BACKGROUND Heart failure prediction after acute myocardial infarction may have important clinical implications. OBJECTIVE To analyze the functional echocardiographic variables associated with heart failure in an infarction model in rats. METHODS The animals were divided into two groups: control and infarction. Subsequently, the infarcted animals were divided into groups: with and without he...

Heat transfer on the microand nano-scales has quickly become an important area of research and development due to its implications for use in MEMS/NEMS devices and electronics cooling [1–4] in the past decade. As these devices become more powerful with reduced volume/surface they will in turn generate more heat in a small area within a short time period, which needs to be removed as efficiently...

BACKGROUND Resting regional wall-motion abnormalities do not reliably distinguish ischemic from nonischemic cardiomyopathy. Dobutamine stress echocardiography with use of the wall-motion score index (WMSI) identifies coronary artery disease (CAD) in dilated cardiomyopathy (DCM), but the technique is subjective and further complicated by left bundle-branch block (LBBB). Long-axis motion is sensi...

background: waist circumference (wc) is an accurate and simple measure of abdominal obesity as compared to waist–hip ratio (whr). the aim of this study was to determine the correlation between body mass index (bmi) with wc and whr and suggest cutoff points for wc among rural malaysian adults. methods: a cross‑sectional study was conducted among 669 respondents from three villages in tanjung kar...

BACKGROUND AND OBJECTIVES The purpose of this study was to evaluate the relationship between myocardial strain and coronary flow reserve (CFR) in the prediction of myocardial functional recovery after acute myocardial infarction (AMI). SUBJECTS AND METHODS Consecutive patients with anterior ST elevation AMI were analyzed. Left ventricular (LV) strain, determined by 2-dimensional speckle track...

Background: Chest pain is the most common reason for patients to be referred to the emergency department of hospitals. This study was performed to compare the GRACE and TIMI scores in predicting important cardiovascular events in patients. Methods: This descriptive-analytical study was performed on 862 cardiac patients who were referred to the emergency department of Taleghani Hospital in Urmi...

The cutoff phenomenon describes a sharp transition in the convergence of an ergodic finite Markov chain to equilibrium. Of particular interest is understanding this convergence for the simple random walk on a bounded-degree expander graph. The first example of a family of bounded-degree graphs where the random walk exhibits cutoff in total-variation was provided only very recently, when the aut...

We present linear stability analysis of a pressure-driven flow in fluid-layer overlaying porous media the presence Couette component introduced by an upper impermeable wall. model dynamics Brinkman equation and couple it with Navier–Stokes for flows fluid-layer. The effect on is discussed detail varying permeability relative thickness fluid to layers. results show that changes from destabilizin...

Simulations involving the Lennard-Jones potential usually employ a cutoff at r = 2.5σ. This communication investigates the possibility of reducing the cutoff. Two different cutoff implementations are compared, the standard shifted potential cutoff and the less commonly used shifted forces cutoff. The first has correct forces below the cutoff, whereas the shifted forces cutoff modifies Newton's ...

BACKGROUND It has been reported that early surgery should be required for patients with type A aortic intramural hematoma (IMH) because it tends to develop classic aortic dissection or rupture. However, the anatomic features of type A IMH that develops dissection or rupture are unknown. The purpose of this study was to investigate the predictors of progression or regression of type A IMH by com...