Thoracic Key

Fig. 23.2 Rhythm strip from monitoring in recent syncope. The heart slows, then a run of ventricular tachycardia (VT) starts (fast broad complex tachycardia, showing independent P wave activity). Syncopal…

Fig. 33.2 ECG in a patient with mitral stenosis. Atrial fibrillation, with very coarse fibrillatory waves in lead V1 – these might be mistaken for an atrial tachycardia, but running…

Fig. 21.2 Left ventricular hypertrophy (LVH). Substantial increase in the voltage of the leads looking at the left ventricle – the R wave in V5 = 33 mm (exceeding that…

Fig. 26.2 Atrial fibrillation (AF). Marked irregularity to the baseline, with no discernable P waves, and an irregular QRS response indicate that the rhythm is atrial fibrillation. Heart rate, 75…

Fig. 3.2 Current flows between different areas of the heart either when some areas have depolarized and others are still to depolarize or, conversely, when some areas have repolarized and…

Fig. 27.2 Anxiety-induced ST depression. Sinus tachycardia heart rate 150 b/min, with a P wave preceding each R wave. Normal P wave, PR interval, QRS complexes. Dramatic downward sloping ST…

Fig. 22.2 Twenty-four hour ECG, in a patient with brief bursts of regular palpitations. Initially sinus rhythm, then a fast regular narrow complex tachycardia, with ST segment depression, becoming more…

Fig. 20.2 Heart failure. The patient had mild effort breathlessness and then suddenly became much more breathless. (a) The ECG shows a well organized atrial arrhythmia (look at the rhythm…