Primary ventricular fibrillation was seen in 20 of 450 consecutive patients (4-4%) admitted within 24 hours after the onset of acute myocardial infarction. Compared with patients without primary ventricular fibrillation they showed a lower mean age group and a higher incidence of anterior infarction. Warning ventricular arrhythmias preceded primary ventricular fibrillation in 58% of cases. Howe...

We analyzed the correlation between Left Ventricular (LV) contraction and right ventricular pacing position via longitudinal strain on 2 dimensional speckle tracking echocardiography in a patient underwent permanent pacemaker implantation developed induced cardiomyopathy

Background & Aims: This study was carried out to assess the effect of opium addiction on the incidence of different types of arrhythmias after acute myocardial infarction (AMI). Methods: The study population consisted of 200 patients with first AMI admitted within 6 hours of the onset of chest pain to the coronary care units (CCU) of two hospitals affiliated to Kerman University of Medical Scie...

Irregular heartbeats and different forms of ventricular ectopic activity are a common occurrence among elite athletes with high contractile cardiac capacity. At the same time, experiments demonstrated that the electrical stimulation threshold, causing ventricular fibrillation, increases during adaptation to physical exercise, without the increase in the contractile cardiac capacity. The researc...

A patient with hypertensive cardiovascular disease was found to have unusual varieties of premature atrial and ventricular contractions. If the premature atrial contraction resulted in a greatly prolonged P-R interval, such that the increment in P-R exceeded the decrement in the preceding R-P, the next sinus P wave, occurring after a normal P-P interval, was found to be blocked. Also, numerous ...

A novel strategy for detecting Premature Ventricular Contraction (PVC) is proposed and investigated. The strategy employs a Swarm-based Support Vector Machine (SSVM). An SSVM is an SVM optimised by using Particle Swarm Optimisation (PSO). The strategy proposes new inputs. The inputs involve the width and the gradient of the electrocardiographic QRS wave. Experiments with different inputs and di...

OBJECTIVE To assess the role of caffeine restriction in the management of patients with symptomatic idiopathic ventricular premature beats. DESIGN A randomised, double blind, 6 week intervention trial incorporating dietary caffeine restriction, caffeinated coffee, and decaffeinated coffee. SETTING Cardiac outpatient clinic. PATIENTS 13 patients with symptomatic frequent idiopathic ventric...