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Interpretation of neonatal and pediatric electrocardiograms (ECG)

…in order to minimize the probability of missing significant abnormalities. The following parameters must be assessed, in chronological order: Heart rate Rhythm P wave PR…

Ventricular Tachycardia

…Structural Heart Disease (SHD): Accounting for approximately 90% of all VT presentations, SHD provides the macroscopic architectural abnormalities necessary for arrhythmogenesis. Ischemic heart disease (IHD…

Acquired QT Prolongation and Drug-Induced Arrhythmia

…drug induced arrhythmias in patients receiving agents known to alter the electrical properties of the heart (inducing QRS or QT prolongation) or causing electrolyte abnormalities…

Vasovagal Syncope: Diagnosis, Tilt Testing and Treatment

…structural heart disease High risk features on examination include: Unexplained systolic blood pressure < 90 mmHg Suggestion of gastrointestinal hemorrhage Persistent bradycardia (< 40 beats…

How to interpret the ECG: A systematic approach

…facilitated by using an algorithm, as it minimizes the risk of missing important abnormalities and also speeds up the interpretation. Note that this chapter is…

🟠 QTc Interval Calculator (Bazett’s, Fridericia’s, Hodge's and Framingham Formulas)

…the square root of the RR interval (the time between two successive R wave peaks). However, it tends to overcorrect at high heart rates and…

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

…ECG, clinical characteristics and management Pre excitation The atrioventricular node and bundle of His are normally the only communication between the atria and the ventricles…

Regional Myocardial Contractile Function: Wall Motion Abnormalities

…used interchangeably throughout this text. Wall motion abnormalities in ischemic heart disease In the setting of stable ischemic heart disease, an atherosclerotic plaque causes ischemia…

Diuretic Strategy and Decongestion in Heart Failure

…The clinical consequences of extracellular volume expansion include elevated cardiac filling pressures, pulmonary congestion, systemic venous hypertension, and peripheral interstitial edema. These abnormalities produce breathlessness…

Chronic Heart Failure With Reduced Ejection Fraction: Four-Pillar Therapy

…a characteristic clinical phenotype of breathlessness, fatigue and oedema. This definition does not depend on left ventricular ejection fraction (LVEF). Heart failure with reduced ejection…

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