The frequency and severity of cardiac arrhythmias were studied in 70 patients with spontaneous subarachnoid hemorrhage investigated prospectively with 24-hour Hotter monitoring. Patients were < 70 years old and without clinical and/or ECG signs of previous heart disease; Hoi ter monitoring was initiated within 48 hours of subarachnoid hemorrhage. Arrhythmias were detected in 64 of the 70 patien...

Arrhythmias during sleep are often detected on routine cardiac monitoring. Specialist cardiology opinion and input is often sought in order to assess whether nocturnal arrhythmias are clinically relevant or not. For the most part, bradyarrhythmias in the young fit individual are a variation of normal and require no further investigations. However even in normal sleep there are cardiovascular di...

Activity of Automatic Cells The normal rhythm of the mammalian heart results from spontaneous excitation of cells in the sinoatrial node. These cells possess the property of automaticity.' The transmembrane potential of working muscle fibers in the atria or ventricles demonstrates a rapid depolarization on excitation (phase 0), a period of variable duration during which the cell repolarizes (ph...

Sudden cardiac death in patients younger than 35 years of age is primarily due to genetic causes. Familial hypertrophic cardiomyopathy accounting for 30% to 40% is associated with structural heart disease while the Brugada syndrome and the long QT syndrome (LQTS) are associated with normal cardiac function. This is a review of the genetics of supraventricular and ventricular arrhythmias. Atrial...

INTRODUCTION Sleep apnea syndrome (SA) is a common breathing disorder that affects 5% of the North American adult population, with men being affected almost twice as much as women [1]. The condition has well defined associations with increased cardiovascular morbidity and mortality, arrhythmia, daytime hypersomnolence, motor vehicle accidents and neurocognitive dysfunction; but despite this it ...

OPINION STATEMENT This article reviews the appropriate evaluation and management of cardiac arrhythmias in the pregnant patient. Any treatment strategy in this patient population has the inherent potential to adversely affect the health of the unborn child. As such, there is no room for empiric therapy in these patients. Adequate arrhythmia documentation is paramount, preferably by noninvasive ...

S JIMPLE and fairly satisfactory rules have been established for the treatment of cardiac arrhythmias, but many problems remain unsolved. The latter chiefly concern those arrhythmias which are refractory to the generally accepted therapeutic measures. Patients still die from cardiac arrhythmias. Since readers of this journal are well acquainted with the routine aspects of the subject, emphasis ...

Cardiac arrhythmias represent a leading cause of morbidity and mortality in developed countries. In spite of intense research, the mechanisms of generation, maintenance and termination of theses arrhythmias are still not clearly understood. The ability to predict, prevent and treat these arrhythmias remains a major scientific challenge. In the last years, new technologies have produced a huge a...

We searched for nutrient deficiencies that could cause cardiac arrhythmias [premature atrial contractions (PACs), premature ventricular contractions (PVCs), atrial fibrillation, and related sinus pauses], and found literature support for deficiencies of taurine and l-arginine. Case histories of people with very frequent arrhythmias are presented showing 10-20g taurine per day reduced PACs by 50...

Hindlimb unloading (HU) is a well-established animal model of cardiovascular deconditioning. Previous data indicate that HU results in cardiac sympathovagal imbalance. It is well established that cardiac sympathovagal imbalance increases the risk for developing cardiac arrhythmias. The cardiac gap junction protein connexin 43 (Cx43) is predominately expressed in the left ventricle (LV) and ensu...