…to re entry This section introduces the most common arrhythmias encountered in clinical practice, beginning with a discussion of the underlying mechanisms of cardiac arrhythmias…

…are highly lethal arrhythmias that lead to death if cardiopulmonary resuscitation is not started immediately. Ventricular fibrillation is the result of numerous re entry circuits …

…ventricular rhythms. Increased automaticity (in His Purkinje fibers), abnormal automaticity (in contractile myocardium), re entry (anywhere) or triggered activity (anywhere) may all cause ventricular arrhythmias…

…increased/abnormal automaticity, re entry or triggered activity. All types of myocardial cells may be engaged in initiation and maintenance of this arrhythmia. As mentioned…

…the slow conducting isthmuses critical for re entry [6] . Non ischemic dilated cardiomyopathy (NICM), hypertrophic cardiomyopathy (HCM), and arrhythmogenic right ventricular cardiomyopathy (ARVC) also fall…

…of the sinoatrial (SA) node. This enhanced atrial activity is most commonly attributable to abnormal automaticity or re entry mechanisms; triggered activity is a less…

Arrhythmias and arrhythmology ECG Atrioventricular Nodal Reentry (Reentrant) Tachycardia (AVNRT): clinical features, mechanisms, ECG & management Atrioventricular nodal reentrant tachycardia (AVNRT) is a common tachyarrhythmia observed…

…right atrium and it typically loops around the tricuspid valve. Impulses spread rapidly through the atria from this re entry circuit. Examples of atrial flutter…

Arrhythmias and arrhythmology ECG Pre excitation, Atrioventricular Reentrant (reentry) Tachycardia (AVRT) and Wolff Parkinson White (WPW) syndrome: ECG, clinical characteristics and management Pre excitation The…

…of tachyarrhythmia with narrow QRS complexes (QRS duration < 0.12 s): sinus tachycardia, inappropriate sinus tachycardia, sinus node re entry, atrial fibrillation, atrial flutter…

…inward currents. This process creates early afterdepolarisations (EADs) that generate premature ventricular contractions (PVCs) and increases transmural dispersion of repolarisation, thereby facilitating reentry. Episodes of…

…discrete P waves separated by an isoelectric baseline. The most likely mechanism underlying typical atrial flutter is reentry. In the common form of typical atrial…

…including atrial flutter, atrial tachycardia, AV node reentry, and AV reentry. In the management of AF, sotalol appears to be more effective than conventional antiarrhythmic…

…means that some myocardial regions will be refractory while others will be excitable at the same time. As previously discussed (refer to Reentry and arrhy

…that enables reentry tachyarrhythmias (AVNRT and AVRT). These arrhythmias rely on AV node transmission. By disrupting this transmission, the reentry and hence, the arrhythmia may…

…of tachycardia (tachyarrhythmia) with narrow QRS complexes (QRS duration <0,12 s): sinus tachycardia, inappropriate sinus tachycardia, sinoatrial re entry tachycardia, atrial fibrillation, atrial flutter…

…of tachycardia (tachyarrhythmia) with narrow QRS complexes (QRS duration <0,12 s): sinus tachycardia, inappropriate sinus tachycardia, sinoatrial re entry tachycardia, atrial fibrillation, atrial flutter…

…commonly, retrograde. Distal re entry tears may allow blood to return to the true lumen, whereas disruption of the adventitia can result in rupture. An…

…AV re entrant tachycardia (AVRT) Permanent junctional reciprocating tachycardia (PJRT) Junctional Ectopic Tachycardia (JET) VENTRICULAR ARRHYTHMIAS Ventricular tachycardia Fascicular tachycardia FREQUENT ECTOPY Premature ventricular contractions…

…refracted ultrasound is then reflected back to the lens, from where it is re refracted to the transducer, resulting in a duplicate of the reflector…

…Atrial arrhythmias — especially atrial fibrillation and atrial flutter. Ischemic heart disease Both acute and chronic ischemic heart disease (including complications) can cause embolisms. Left ventricular…

…Figure 4. Progression from coarse ventricular fibrillation (VF) to fine VF. CPR re induces coarse VF by means of increasing coronary blood flow. In circumstances…

…1 point) M alignancy (1 point) O lder age ( 75 years) (1 point) R educed platelet count or function (1 point) R e bleeding risk…