BACKGROUND Klinefelter syndrome is the most common genetic cause of male infertility and affects approximately 1 in 500 live births. Although accompanying cardiac disorder is not a specific feature of Klinefelter syndrome, rarely associated anomalies such as mitral valve prolapse, atrial septal defect, ventricular septal defect, tetralogy of Fallot, patent ductus arteriosus, and hypertrophic ob...

The most common types of supraventricular tachycardia are caused by a reentry phenomenon producing accelerated heart rates. Symptoms may include palpitations (pulsation in the neck), chest pain, lightheadedness or dizziness, and dyspnea. It is unusual for supraventricular tachycardia to be caused by structurally abnormal hearts. Diagnosis is often delayed because of the misdiagnosis of anxiety ...

BACKGROUND Catheter ablation is a treatment that can cure various cardiac arrhythmias. Fluoroscopy is used to locate and direct catheters to areas that cause arrhythmias. However, fluoroscopy has several risks. Electroanatomic mapping (EAM) facilitates three-dimensional imaging without X-rays, which reduces risks associated with fluoroscopy. OBJECTIVE We describe a series of patient cases whe...

Supraventricular tachycardia (SVT) is the most common sustained arrhythmia in neonates and infants. Presentation of SVT in the neonate is usually subtle and frequently complicated by congestive heart failure. Despite the widespread use of β2-agonists, their safety has been questioned. Several studies have reported an increased incidence of cardiac arrhythmias in patients treated with these agen...

AF is characterised by uncoordinated electrical activation of the atria, apparent as the absence of coordinated P waves on the ECG. This rapid supraventricular activity then leads to an irregularly irregular and usually rapid ventricular response rate.[1] The pathophysiology of AF is complex and likely to be multifactorial. Its existence is reliant on the structural and electrical remodelling o...

Two patients with a long history ofparoxysmal supraventricular tachycardia are presented. The episodes of arrhythmia had been refractory to a wide variety of suppressive drugs and a significant deterioration in life style had resulted. Cardiac conduction studies demonstrated a re-entry mechanism, and it was possible to induce and terminate the tachycardia by appropriately timed electrical stimu...

In a prospective controlled clinical trial the natural history of cardiac arrhythmias and their prevention with prophylactic quinidine therapy were studied in 23 patients with acute coronary insufficiency without myocardial infarction. After a loading procedure, 300 mg of quinidine sulfate or placebo was administered orally every 6 hours for up to 5 days under balanced, random, double-blind con...

The heart rate variability signal is a valuable tool for cardiovascular system diagnostics. Processing this detects arrhythmia during long-term cardiac monitoring. It also analyzed to recognize abnormalities within the autonomic nervous system. helps in detecting various pathologies, such as atrial fibrillation (AF), supraventricular tachycardia (SVT), and congestive failure (CHF). As beneficia...

Supraventricular and ventricular dysrhythmias, as well as conduction disturbances of varying severity are frequently observed in chronic obstructive pulmonary disease (COPD). The type of arrhythmia that occurs in patients with COPD is influenced by their clinical state. Co-existing coronary heart disease, severe blood gas abnormalities and medication may precipitate the rhythm disturbances. Par...

I ntravenous amiodarone is a recognised treatment alternative for the conversion of atrial fibrillation to sinus rhythm. Consensus regarding dosage and duration of treatment has not been reached. 5 Our coronary care unit routinely uses intravenous amiodarone for conversion of supraventricular arrhythmia in various clinical settings. Following a loading dose of 300 mg/30 mins, two alternative do...