introduction atrial standstill is a rare condition, characterized by absence of atrial electrical and mechanical activity evident in surface electrocardiography echocardiography, or fluoroscopy, which is associated with unresponsiveness of atria to maximal output electrical stimulation. this condition can be present with thromboembolic complication, low cardiac output, and sometimes palpitation...

Popliteal artery pseudoaneurysm is a rare injury occurring in total knee replacement surgeries. The symptoms are usually pain and swelling on the affected side which prompts immediate investigations. Surgical endovascular interventions both available options for intervention with covered stents being preferred choice. In this study, we report case of 72-year-old female diagnosed right popliteal...

OBJECTIVES To compare the time course of resumption of mechanical performance of the left and right atrium after the novel method of internal low-energy cardioversion (CV) and conventional external CV of atrial fibrillation (AF). BACKGROUND Right atrial performance has been shown to normalize before the left atrium after external CV. However, no data on atrial function after internal CV are a...

Hyperthyroidism has been associated with atrial fibrillation (AF), however, hyperthyroidism induced ion channel changes which may predispose to AF have not been fully elucidated. To understand the electrophysiological changes occurring in left and right atrium with hyperthyroidism, the patch-clamp technique was utilized to compare action potential duration (APD) and whole cell currents in myocy...

INTRODUCTION Bursts of tachycardia arising in the pulmonary veins may play an important role in perpetuating atrial fibrillation (AF). However, the role of the coronary sinus (CS) in the perpetuation of AF has been unclear. The aim of this study was to determine whether the CS plays a role in perpetuation of AF. METHODS AND RESULTS Pulmonary vein isolation was performed by segmental ostial ab...

T HE cardiac atria of the normal adult are nearly equal in size; the right averages 163 ml. in capacity, the left 140 ml.' The left atrium is more prone to enlarge, usually in association with mitral valve disease; it rarely reaches extreme volumes of 3,000 ml.2 Extreme left atriomegaly was first reported as "aneurysmal dilatation of the left auricle" in 1849 by Hewett,3 but the clinical aspect...

We hypothesized that pituitary adenylate cyclase-activating polypeptide (PACAP) activates intracardiac postganglionic parasympathetic nerves and has a different effect than cervical vagal stimulation. We measured effective refractory period (ERP) and conduction velocity at four atrial sites [high right atrium (HRA), low right atrium (LRA), high left atrium (HLA), and low left atrium (LLA)] and ...

An asymptomatic patient with cardiomegaly caused by isolated right atrial standstill is reported. The right atrium showed no evidence of contraction on pressure records or angiographically, while the left atrium functioned normally.

BACKGROUND In patients presenting with non-ST elevation myocardial infarction, we investigated the relationship of left atrial deformational parameters evaluated by 2-dimensional speckle tracking imaging (2D-STI) with conventional echocardiographic diastolic dysfunction parameters and brain natriuretic peptide level. MATERIAL AND METHODS We enrolled 74 non-ST segment elevation myocardial infa...

Aims. To determine the role of prevalence low-voltage areas in occurrence arrhythmia recurrence after interventional treatment atrial fibrillation (AF). Methods. The study included 38 patients with paroxysmal (52.6%) and persistent (47.4%) forms AF who underwent using high-density electroanatomical mapping (at least 10,000 EGM points). Analysis maps was performed completion ablation procedure. ...