The ECG Made Easy

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Elsevier is a leading publisher of health science books and journals, helping to advance medicine by delivering superior education, reference information and decision support tools to doctors, nurses, health practitioners and students. With titles available across a variety of media, we are able to supply the information you need in the most convenient format. An ECG lead is a graphical representation of the heart’s electrical activity calculated by analysing data from several ECG electrodes. Chest leads Provides a full understanding of the ECG in the diagnosis and management of abnormal cardiac rhythms. The ST segment is an isoelectric line representing the time between depolarisation and repolarisation of the ventricles (i.e. ventricular contraction). T wave

How to Read an ECG | ECG Interpretation | EKG | Geeky Medics How to Read an ECG | ECG Interpretation | EKG | Geeky Medics

In healthy individuals, the electrical activity of the heart begins at the sinoatrial node then spreads to the atrioventricular (AV) node. It then spreads down the bundle of His and Purkinje fibres to cause ventricular contraction. As the user steps through each of the interpretation stages, there are options to define and reveal more information, or to open a new tab for more in depth review. The cardiac axis gives us an idea of the overall direction of electrical activity. ECG leads Normal cardiac axisA single Q wave is not a cause for concern – look for Q waves in an entire territory (e.g. anterior/inferior) for evidence of previous myocardial infarction. An example of a pathological Q wave R and S waves Left axis deviation (LAD) involves the direction of depolarisation being distorted to the left (between -30° and -90°). This results in the deflection of lead III becoming negative (this is only considered significant if the deflection of lead II also becomes negative). Conduction abnormalities usually cause left axis deviation. Left Axis Deviation (LAD)

ECG Made Easier • LITFL • ECG library - Life in the Fast Lane ECG Made Easier • LITFL • ECG library - Life in the Fast Lane

High take-off (or benign early repolarisation) is a normal variant that causes a lot of angst and confusion as it LOOKS like ST elevation. The PR interval should be between 120-200 ms (3-5 small squares). Prolonged PR interval (>0.2 seconds) If the R and S waves are of equal size, it means depolarisation is travelling at exactly 90° to that lead.

An easy to follow systematic approach, along with colour coding and inline links to a wealth of #FOAMed ECG resources, creates a simple and incredibly effective learning tool. Smart study tools such as note sharing and subscription, review mode, and Microsoft OneNote integration. You may also be interested in our ECG interpretation OSCE stations available as part of our collection of 800+ ready-made OSCE stations.