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

The ECG abnormalities do not change! During a STEMI, the changes will evolve – in benign early repolarisation, they will remain the same. Poor progression (i.e. S > R through to leads V5 and V6) can be a sign of previous MI but can also occur in very large people due to poor lead position. An example of poor R wave progression due to a previous anteroseptal MI. 1 J point segmentThe atrial impulse is getting to the ventricle by a faster shortcut instead of conducting slowly across the atrial wall. This accessory pathway can be associated with a delta wave (see below). When the electrical activity within the heart travels towards a lead, you get a positive deflection. Tall complexes imply ventricular hypertrophy (although can be due to body habitus e.g. tall slim people). There are numerous algorithms for measuring LVH, such as the Sokolow-Lyon index or the Cornell index. The PR interval should be between 120-200 ms (3-5 small squares). Prolonged PR interval (>0.2 seconds) The ST segment is an isoelectric line representing the time between depolarisation and repolarisation of the ventricles (i.e. ventricular contraction). T wave

Understanding an ECG | ECG Interpretation | Geeky Medics Understanding an ECG | ECG Interpretation | Geeky Medics

RAD is commonly associated with conditions such as pulmonary hypertension, as they cause right ventricular hypertrophy. RAD can, however, be a normal finding in very tall individuals. Right Axis Deviation Left axis deviation Smart study tools such as note sharing and subscription, review mode, and Microsoft OneNote integration. Each lead’s ECG recording is slightly different in shape. This is because each lead is recording the heart’s electrical activity from a different direction (a.k.a viewpoint). ST-elevation is significant when it is greater than 1 mm (1 small square) in 2 or more contiguous limb leads or >2mm in 2 or more chest leads. The paper used to record ECGs is standardised across most hospitals and has the following characteristics:For over forty years The ECG Made Easy has been regarded as the best introductory guide to the ECG, with sales of over half a million copies as well as being translated into more than a dozen languages. Hailed by the British Medical Journal as a "med If a patient has a regular heart rhythm, their heart rate can be calculated using the following method: If P waves are absent and there is an irregular rhythm, it may suggest a diagnosis of atrial fibrillation.

The ECG Made Easy - 9780702074578 | Elsevier Health The ECG Made Easy - 9780702074578 | Elsevier Health

Whenever the direction of electrical activity moves towards a lead, a positive deflection is produced. how many times have you revised ‘ how to interpret an ECG‘? For me, it’s at least annually for the last 20 years, and still, I forget! Amjid Rehman The cardiac axis gives us an idea of the overall direction of electrical activity. ECG leads Normal cardiac axis You might also be interested in our OSCE Flashcard Collection which contains over 3000 flashcards that cover clinical examination, procedures, communication skills and data interpretation.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.

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

It represents the time taken for the ventricles to depolarise and then repolarise. The components of an ECG The mythical ‘ delta wave‘ indicates that the ventricles are being activated earlier than normal from a point distant from the AV node. The early activation then spreads slowly across the myocardium, causing the QRS complex’s slurred upstroke. Observe the distribution of the T wave inversion (e.g. anterior/lateral/posterior leads). You must take this ECG finding and apply it in the clinical context of your patient. Inverted T wave Biphasic T waves Benign early repolarisation occurs mostly under the age of 50 (over the age of 50, ischaemia is more common and should be suspected first). You may also be interested in our ECG interpretation OSCE stations available as part of our collection of 800+ ready-made OSCE stations.

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A new opening chapter entitled ‘ The ECG made very easy’ distils the bare essentials of using an ECG in clinical practice with minimal theory and maximum practicality. 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. These become larger the slower the bradycardia – classically U waves are seen in various electrolyte imbalances, hypothermia and secondary to antiarrhythmic therapy (such as digoxin, procainamide or amiodarone). U wave The deflection height represents the amount of electrical activity flowing in that direction (i.e. the higher the deflection, the greater the amount of electrical activity flowing towards the lead).