ABSTRACT
Figure 27.1 Typical atrial flutter. Figure 27.2 Sinus rhythm with ventricular trigeminy. Figure 27.3 Ventricular tachycardia. The sixteenth complex is a fusion beat. Figure 27.4 Ventricular demand pacemaker inhibited by sinus beats. The sixth complex is a fusion beat. Figure 27.5 2:1 atrioventricular block with ventricular ectopic beats. Figure 27.6 Monomorphic ventricular tachycardia. Figure 27.7 Complete atrioventricular block with narrow ventricular complexes. Figure 27.8 Atrial ectopic beat superimposed on T wave of fourth ventricular complex. There is a further atrial ectopic beat superimposed on the T wave of the fifth complex which is not conducted to the ventricles. Figure 27.9 Non-sustained monomorphic ventricular tachycardia (with ventriculoatrial conduction) after single normal beat. Figure 27.10 Atrial fibrillation with rapid ventricular response. The f waves are of low amplitude but the diagnosis is clear from the totally irregular ventricular rhythm. Figure 27.11 After two normally conducted sinus beats there is right bundle branch block (lead V1). Figure 27.12 (a) Normal sinus rhythm. (b) Typical atrioventricular nodal re-entrant tachycardia: there is an apparent secondary r wave in V1 which is not present during normal rhythm. It is due to retrograde atrial conduction. The very short ventriculoatrial conduction time indicates atrioventricular nodal re-entrant tachycardia. Figure 27.13 The first, penultimate and last beats show sinus rhythm and Wolff-Parkinson-White syndrome. After the first beat there is an episode of atrial fibrillation during which all complexes are pre-excited. Figure 27.14 Atrial ectopic beats superimposed on third and fifth ventricular T waves. First ectopic beat is not conducted; the second is conducted to the ventricles with left bundle branch block. Figure 27.15 Sinus bradycardia with long QT interval and short episode of torsade de pointes tachycardia. Figure 27.16 Mobitz II atrioventricular block. Figure 27.17 Complete atrioventricular block. Figure 27.18 Atrial synchronized ventricular pacing (VAT). Figure 27.19 Atrioventricular junctional re-entrant tachycardia. Figure 27.20 Ventricular bigeminy: inferior myocardial infarction. Figure 27.21 The fourth ventricular complex is an interpolated ventricular ectopic beat. Figure 27.22 Atrial demand pacing. Figure 27.23 Twelve-lead ECG showing right ventricular outflow tract tachycardia. Sinus rhythm has returned at time of recording rhythm strip (II). Figure 27.24 Termination of atrial fibrillation. Figure 27.25 Atrial flutter. 2:1 atrioventricular conduction. Figure 27.26 Atrial fibrillation with long pause in ventricular activity. Figure 27.27 Atrial tachycardia with atrioventricular block. Figure 27.28 Atrial fibrillation. Figure 27.29 Ventricular tachycardia initiated by third ventricular ectopic beat. Figure 27.30 Normal sinus rhythm: Left bundle branch block. Figure 27.31 First-degree atrioventricular block. PR interval 0.46 s. Figure 27.32 Ventricular demand pacing at 40 beats/min. Ventricular ectopic after first paced beat. Last complex is a fusion beat. Figure 27.33 Atrial flutter with complete atrioventricular block. Figure 27.34 Junctional rhythm. Figure 27.35 Atrial pacing. There are two ventricular ectopic beats which are of course not sensed by pacemaker.
