A 39-year-old woman treated with itraconazole for onychomycosis developed palpitation and dizziness during her treatment. Premature ventricular contractions (PVC) were detected during monitoring in the emergency room. Twenty-four hour holter electrocardiogram revealed aberrant premature atrial contractions (PACs) and PVCs. Corrected QT interval was in normal limits. After discontinuing the ther...

Electrocardiographic signal averaging techniques have demonstrated a low-amplitude late potential and a long filtered QRS complex in patients with ventricular tachycardia (VT) after myocardial infarction. Complex ventricular ectopy and left ventricular aneurysms have also been associated with VT. The purposes of this study were (1) to determine whether the findings from the signal-averaged elec...

Spirito et all report on the prognostic significance of nonsustained ventricular tachycardia (VT) during Holter monitoring in a highly selected cohort of 151 asymptomatic patients with hypertrophic cardiomyopathy (HCM). Patient selection excluded patients with moderate to severe symptoms (New York Heart Association functional classes III and IV), those with previous syncopal episodes, and those...

There has been progressive development in ambulatory external electrocardiogram (AECG) monitoring technology. AECG monitors initially consisted of 24to 48-h Holter monitors and patient-activated event and loop recorders. More recently, several ambulatory cardiovascular telemetry monitors and a patch-type 7to 14-day Holter monitor have been introduced. These monitoring systems are reviewed along...

Tilt testing is a commonly used diagnostic tool to evaluate syncope of undetermined etiology. We hereby describe a twelve year old male child who developed presyncope during provocative head up tilt testing along with ST segment elevation in cardiac monitor during presyncope. Patient underwent repeat head up tilt testing along with holter monitoring which showed a left bundle branch block escap...

OBJECTIVE To evaluate Holter and treadmill responses in patients with stable angina or recent myocardial infarction in order to compare the mechanisms of ischaemia and its symptomatic expression in these two groups. PATIENTS 75 patients with ischaemic ST segment depression on both a treadmill stress test and ambulatory Holter monitoring. Group A comprised 35 patients with stable angina, and g...

Renal denervation (RDN) has emerged as a promising therapy for patients with resistant hypertension and other diseases related to sympathetic overactivation. 1 High-intensity focused ultrasound (HIFU) has been demonstrated to be a novel strategy for effective noninvasive deep tissue ablation in clinical practice. 2 The exploration of HIFU has expanded to cardiovascular research, such as noninva...

RATIONALE Subcutaneous implantable electrocardiographs are highly effective in detecting covert atrial fibrillation (AF) in cryptogenic stroke. However, these invasive devices are not indicated for all cryptogenic stroke patients, and noninvasive improvements over conventional Holter-type ambulatory electrocardiography are needed. We evaluated the clinical application and effectiveness of Duran...