The ECG Made Easy

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As a result, you see a positive deflection in all these leads, with lead II showing the most positive deflection as it is the most closely aligned to the overall direction of electrical spread. ECG Made Easier takes the user on a step-by-step learning journey through ECG interpretation, based on Chris Nickson’s ECG exam template. Typical ECG findings include the presence of P waves and QRS complexes that have no association with each other, due to the atria and ventricles functioning independently. The third part looks at the clinical interpretation of individual ECGs in patients with chest pain, breathlessness, palpitations and syncope as well as understanding the normal variations in ECGs recorded from healthy subjects.

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

This point can be elevated, resulting in the ST segment that follows it being raised (this is known as “high take-off”). Provides a full understanding of the ECG in the diagnosis and management of abnormal cardiac rhythms. Whenever the direction of electrical activity moves towards a lead, a positive deflection is produced. An ECG lead is a graphical representation of the heart’s electrical activity which is calculated by analysing data from several ECG electrodes. wave) on the ECG represents the average direction of electrical travel (calculated using the ECG machine’s mathematical formulae).Mark out several consecutive R-R intervals on a piece of paper, then move them along the rhythm strip to check if the subsequent intervals are similar. The WiLLiaM MaRRoW mnemonic can be used to quickly recognise left and right bundle branch blocks by looking at V1 and V6.

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

Mobitz I AV block (Wenckebach) occurs IN the AV node (this is the only piece of conductive tissue in the heart which exhibits the ability to conduct at different speeds). Each name’s first and last letter helps you recognise the ECG features of the associated bundle branch block. A broad QRS complex occurs if there is an abnormal depolarisation sequence – for example, a ventricular ectopic where the impulse spreads slowly across the myocardium from the focus in the ventricle.

The early activation then spreads slowly across the myocardium, causing the QRS complex’s slurred upstroke. 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.