…for every 10,000 apparently healthy newborn infants, around six will have critical CHD, and the pulse oximetry test will correctly identify five of these…

…Physiology (particularly cardiac electrophysiology) Pathophysiology (causes and mechanisms underlying various conditions diagnosed using ECG) Epidemiology Clinical aspects ECG criteria/characteristics Electrophysiological explanations for ECG changes…

…Only clinical signs of herniation halt the puncture, and antibiotics and a corticosteroid are then given immediately after blood cultures. For questions other than acute…

…echogenicity). For each reflection, a portion of the sound waves return to the transducer and produce a copy of the reflector on the image. Hence…

…presence or haemodynamic significance of a specific stenosis. Clinical Role and Indications CAC scoring is principally a risk stratification tool for individuals without known clinical…

…for this are explained below. The normal P wave contour on ECG The normal P wave (Figure 1, upper panel) is typically smooth, symmetric and…

…improves vascular health and may reduce cardiovascular risk within several years, although risk may remain higher than that of never smokers for a prolonged period…

…have any clinical relevance and it may lead to misunderstanding. Use of the term PSVT is therefore not recommended. Synonyms for AVNRT Atrioventricular nodal reentrant…

Arrhythmias and arrhythmology ECG Mechanisms of cardiac arrhythmias: from automaticity to re entry This section introduces the most common arrhythmias encountered in clinical practice, beginning…

…reflecting the dynamic interplay between cardiac function and vascular resistance. Advantages of measuring MAP over systolic blood pressure While systolic blood pressure (SBP) indicates the…

…interval can cause serious arrhythmias and sudden cardiac death. QT prolongation can precipitate torsades de pointes, a specific form of polymorphic ventricular tachycardia characterized by…

…with NSTE ACS should be admitted for management of acute ischaemia. Those with possible ACS, a non diagnostic ECG, and normal initial troponin may be…

…and perform troubleshooting should be considered a basic clinical skill. Pacing activity may be visible or invisible, depending on e.g the type of pacemaker…

…generate vibrations in the surrounding air and these vibrations propagate in the form of a sound wave. If the sound waves encounter a new medium…

…with long refractory periods and short RR intervals have shorter refractory periods. Aberrant conduction occurs when the length of the cardiac cycle is changed without…

…wave changes in lead II and lead V1 ( Figure 3 ). Enlargement of the right atrium is commonly a consequence of increased resistance to empty blood…