Atrial Ectopic Tachycardias
Fig. 10.1 12-Lead ECG from a 9-month-old boy with atrial ectopic tachycardia at 150 bpm. There is variable A-V conduction. The P-wave is large in many leads and has a…
Development and Structure of the Cardiac Conduction System
Fig. 1.1 Schematic representation of the primary heart tube (brown) and the secondary added myocardium derived from the second heart field (yellow), including differential genes and proteins expressed in the…
Pharmacology of Anti-arrhythmic Agents
Fig. 22.1 Ia lengthens the action potential (right shift); Ic does not significantly affect the action potential (no; Ib shortens the action potential (left shift) shift) Class I anti-arrhythmic agents…
Allied Professional Roles in the Management of Arrhythmias in the Young
Medical screening Psychosocial screening Anticipatory guidance Update health history Child/family response to planned procedure Ask parent/guardian to identify concerns; address concerns Identify co-morbidities Assess family composition, support systems and coping…
Sinoatrial Reentrant Tachycardia: Inappropriate Sinus Tachycardia
Fig. 7.1 Six (limb) lead electrocardiogram (top three and bottom three tracings) with an esophageal bipolar lead recording (middle tracing), all at paper speed of 100 mm/s, in a 2-month-old…
Multifocal Atrial Tachycardia
Fig. 12.1 Resolution of MAT. Fifty percent of patients (indicated by broken line) were free of arrhythmia 5 months after diagnosis. The dotted line indicates a 95 % confidence interval….
Ventricular Tachyarrhythmias
Figure 7.1 Algorithm to determine VT vs. SVT by Brugada et al. [2] (Used with permission) Figure 7.2 Algorithm to determine VT vs SVT with aberrancy by criteria developed in…
Wolff-Parkinson-White (WPW) Syndrome
Figure 4.1 Surface ECG morphologies from a patient with WPW in different situations. (a) Sinus rhythm with subtle preexcitation, (b) Preexcitation maximized by slow atrial pacing plus adenosine, (c) Preexcitation…
A Practical Guide to Radiofrequency Catheter Ablation of Atrial Fibrillation
Patient characteristic Better candidate Worse candidate Symptoms Highly symptomatic Asymptomatic Failed Class I or III antiarrhythmic drugs >1 0 AF classification Paroxysmal Long standing persistent Age at time of ablation…
Syncope, Tilt Testing, and Cardioversion
Figure 2.1 Age in years One of the most interested yet challenging features regarding the management of syncope is the diverse range of significance of a syncopal episode. Syncope can…
