Depolarization wave and mechanics in the paced heart
نویسنده
چکیده
v This organ deserves to be styled the starting point of life and the sun of our microcosm just as much as the sun deserves to be styled the heart of the world.
منابع مشابه
The P wave and P-R interval. Effects of the site of origin of atrial depolarization.
The atria of 37 patients were paced from selected sites during cardiac surgery. When the atria were paced from endocardial sites low in the right atrium, the P waves in ECG leads II, III, and aVF were shown to be either negative, biphasic, or positive, depending on the site paced. When the endocardial sites were paced, the P-R intervals were, almost without exception, less than 0.12 sec. When t...
متن کاملPaced ECG Morphology – Reveals More than What It Conceals
Ventricular paced rhythms can mask ECG changes of several conditions. This is because the paced ventricular rhythm does not follow the normal pattern of depolarization through the bundle of His and the bundle branches. Instead, depolarization initially occurs at the tip of the pacemaker lead which is usually at the apex or the septum. The depolarization then proceeds through the myocardium from...
متن کاملMindfulness-Based Interventions for parents of slow-paced people: A Systematic review and meta-analysis
Objective: Mindful-based interventions have been the focus of attention among the third wave of cognitive-behavioral followers, in recent years. A variety of interventional techniques such as acceptance, emotional control, cognitive restructuring are increasingly incorporated into the interventional framework directed to help slow-paced population parents and caregivers. Method: The present stu...
متن کاملCardiac electro-mechanics in numerico
Pacing leads, attached to the heart wall, continuously move and deform during the cardiac cycle. Knowledge about deformation is needed for optimal lead design and pacing site. The overall aim of the study is to quantify motion and deformation of lead and wall, using a finite element model of the beating heart. In this study the relation between electrical activation (moment of depolarization) a...
متن کاملMechanics of 2D Elastic Stress Waves Propagation Impacted by Concentrated Point Source Disturbance in Composite Material Bars
Green’s function, an analytical approach in inhomogeneous linear differential equations, is the impulse response, which is applied for deriving the wave equation solution in composite materials mediums. This paper investigates the study of SH wave’s transmission influenced by concentrated point source disturbance in piezomagnetic material resting over heterogeneous half-space. Green function ap...
متن کامل