ECG Basics
Learn the ECG from the cell up.
Thirteen short lessons, from one heart cell's action potential to a full 12-lead read. Every strip is drawn from the same engine that runs the live simulator, so you can open any example and watch it move.
ECG Basics
Thirteen short lessons, from one heart cell's action potential to a full 12-lead read. Every strip is drawn from the same engine that runs the live simulator, so you can open any example and watch it move.
The five phases of the ventricular action potential, which currents drive them, and why a cell cannot fire again straight away.
Read →Pacemaker cells drift up to threshold on their own. Phase 4 slope sets the rate, and the autonomic nervous system tilts it.
Read →Why a wave moving toward an electrode points up, what P, QRS and T stand for, and why the normal T wave is upright.
Read →What one small box and one large box mean in time and voltage, and how to check speed and gain before reading anything.
Read →P, PR, QRS, ST, T and QT: where each one starts and ends, and the adult values most references use.
Read →The 300 rule, the 1500 rule and the 6-second count, with a live check against engine strips.
Read →Regular, regularly irregular and irregularly irregular rhythms, read from RR intervals.
Read →Ten electrodes, twelve viewpoints: limb leads in the frontal plane, chest leads in the horizontal plane, and which leads face which wall.
Read →Estimate the frontal-plane QRS axis from leads I and aVF, then refine it with lead II.
Read →First-degree delay, Mobitz I, Mobitz II and complete block, told apart by what the P waves do.
Read →Why a blocked bundle widens the QRS, and how V1 and V6 separate right from left bundle branch block.
Read →Reading ST elevation by territory with reciprocal change, and why a long QTc matters.
Read →One order to read every ECG so that nothing gets skipped, with a live rhythm to practise on for each step.
Read →