Arrhythmias are common problems in hypertensive patients. The presence and complexity of both supraventricular and ventricular arrhythmias may influence morbidity, mortality, as well as the quality of life of patients. Diastolic dysfunction of the left ventricle, left atrial size and function, and left ventricular hypertrophy have been suggested as the underlying risk factors for supraventricul...

There is a small but potentially avoidable incidence of death associated with childhood supraventricular tachycardia.1 2 The time of greatest risk is when the child presents for the first time and requires therapeutic intervention. Infants and children tolerate arrhythmias less well than adults as they are more dependent on heart rate for cardiac output and have less reserve.3 4 They are also a...

Major spontaneous variation in cycle length during supraventricular tachycardia is quite an uncommon phenomenon, which sometimes can mislead a correct diagnosis. We describe a patient who developed spontaneous variation in cycle length during electrophysiologic study in whom the coronary sinus cannulation was extremely difficult. In this situation, careful inspection of the mechanisms associate...

Pacemakers were implanted in 10 of 14 patients with dizziness and syncopal episodes of long duration, due to sino-atrial block. Paroxysmal supraventricular tachycardia, notably atrial fibrillation, had occurred in 6 patients. Medical treatment was unsatisfactory in 3 of these and pacemaker therapy was given. This abolished both syncope and paroxysmal tachycardia. Sinoatrial block and supraventr...

Atrioventricular nodal re-entry tachycardia is a common supraventricular arrhythmia. The rate of recurrence is relatively high, and accordingly ablative therapy became the first-line suggested therapy. In this review, we highlight the electrocardiographic clues to the diagnosis of atrioventricular nodal re-entry tachycardia, also we present the electrophysiological data and maneuvers that enabl...

Distinction between ventricular tachycardia (VT) and supraventricular tachycardia (SVT) with aberrant conduction has major therapeutic and prognostic implications. Exclusive assessment of lead aVR, using a fourstep algorithm can rapidly make such distinction with a high degree of diagnostic accuracy. To illustrate the concept, we present the case of a 70-year-old female with a prior history of ...