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Pericarditis, myocarditis & perimyocarditis: ECG, criteria & treatment

…pain and ST elevation on ECG explains why clinicians often confuse acute pericarditis and STEMI. This is further complicated by the fact that acute myocarditis…

Introduction to cardiac arrest

…ICU), coronary care unit (CCU), regular wards and rehabilitation facilities. Depending on the cause of the arrest, other units may be critical (e.g. trauma…

The 3-phase model of sudden cardiac arrest

…the patient is in. The three phases following a sudden cardiac arrest were described by Weisfeldt and Becker (2002). Drawing on physiology, observational and experimental…

Left bundle branch block (LBBB) in acute myocardial infarction: the Sgarbossa criteria

…STEMI). Hence, an acute myocardial infarction may actually result in LBBB which then masks the ischemic ST T changes on ECG. In summary, left bundle…

Premature ventricular contractions (premature ventricular complex, premature ventricular beats)

…depolarization will consequently lead to abnormal repolarization. This explains the secondary ST T changes seen on premature ventricular complexes; the ST T vector will be…

A Novel Familial Cardiac Arrhythmia Syndrome Identified Using ECG

…His father and uncle, with similar ST segment changes, were diagnosed with atrial fibrillation in their 60s. The father had repeated episodes of ventricular tachycardia…

The Cabrera format of the 12-lead ECG and inverted lead aVR

…lead ECG Numerous conditions that can be diagnosed using the 12 lead ECG require that ECG changes occur in two or more anatomically contiguous leads…

Intraventricular conduction delay: bundle branch blocks & fascicular blocks

…activation (i.e. contraction). The significance of this will depend on the severity of the conduction defect and the affected ventricle. In general, a conduction…

Overview of the ECG Waves, Deflections, Intervals, Durations

…and the ST segment The ST segment must always be studied carefully since its appearance may be changed in a wide range of serious conditions…

Pre-excitation, Atrioventricular Reentrant (Reentry) Tachycardia (AVRT), Wolff-Parkinson-White (WPW) syndrome

…ST T changes during pre excitation As mentioned in Chapter 1, pre excitation causes secondary ST T changes. This is due to the fact that…

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