AIMS We sought to determine the incidence, mechanisms, and time to syncope recurrence in patients with spontaneous syncopal monomorphic ventricular tachycardia (SyMVT) treated with an implantable cardiac defibrillator (ICD). METHODS AND RESULTS Incidence and causes of syncope following ICD implantation in consecutive patients (n=26) with spontaneous SyMVT were compared with those found in con...

Drug abuse is considered as the most common poisoning in the world. Stimulants agent especially amphetamines and methamphetamines are among important abused substances. Different types of neurologic, psychiatric, respiratory, gastrointestinal, and cardiogenic complications have been reported to be related to methamphetamine consumption. Some of these substances could cause dysrhythmias which is...

Glossopharyngeal neuralgia is a rare pain syndrome presenting with paroxysms of pain in the region of the glossopharyngeal nerve. Even more uncommon is the association between glossopharyngeal neuralgia and cardiac syncope. In these patients, the cardiovascular consequences may include bradycardia, hypotension and cardiac arrest. We describe the case of a 40-year-old patient who presented with ...

BACKGROUND Potassium deficiency may cause cardiac arrhythmias culminating in syncope or sudden death. METHODS An inquiry performed among physicians caring for a total of 249 patients with inborn salt-losing tubulopathies revealed that acute cardiac complications occurred in seven children. RESULTS Four patients died suddenly and three had severe syncope. These episodes occurred in the conte...

BACKGROUND Current clinical diagnosis of long-QT syndrome (LQTS) includes genetic testing of family members of mutation-positive patients. The present study was designed to assess the clinical course of individuals who are found negative for the LQTS-causing mutation in their families. METHODS AND RESULTS Multivariate Cox proportional hazards model was used to assess the risk for cardiac even...

Syncope is a relatively common occurrence in the general population accounting for up to 6% of hospital medical admissions and at least 3% of accident and emergency visits each year. 2 In a proportion of cases, syncope continues to pose a clinical dilemma despite the development of new diagnostic techniques. Mortality and serious morbidity associated with syncope are generally low overall but o...

Syncope, a transient loss of consciousness, is a common clinical problem. The most common causes of syncope are cardiovascular in origin and are associated with a high rate of mortality in patients with underlying heart disease, transient myocardial ischemia, and other less common cardiac abnormalities.1 The primary purpose of the evaluation of the patient with syncope is to determine whether t...

An electric pacemaker may, under certain circumstances, compete with an intrinsic cardiac rhythm and share control of the heart. Should an electric stimulus fall in the vulnerable phase of the ventricular cycle, potentially dangerous arrhythmias may be provoked (Sowton, 1965; Siddons and Sowton, 1967; Bilitch, Cosby, and Cafferky, 1967). " Ventricular-programmed " or " demand " pacemakers, whic...

Dental trauma secondary to a syncopal episode occurs rarely in the pediatric population. Although the majority of these events occurs in patients with a benign medical history, a subset of these cases occur in patients with a genetic predisposition to cardiac arrhythmia. Long QT syndrome, characterized by prolonged cardiac ventricular repolarization, represents one genetic condition in which pa...

Coronary artery anomalies are among the neglected topics in cardiology. Anomalous origin of the left main coronary artery from the right sinus of valsalva is a rare coronary anomaly observed in 0.15% of patients. During exercise, the distended aorta and pulmonary artery with increased blood flow may squeeze the Left Main Coronary Artery (LMCA) between them. Even though arrhythmias are common ca...