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The ECG leads: Electrodes, limb leads, chest (precordial) leads and the 12-Lead ECG

…and ECG electrodes . An electrode is a conductive pad that is attached to the skin and enables the recording of electrical currents. An ECG lead…

Pre-excitation, Atrioventricular Reentrant (Reentry) Tachycardia (AVRT), Wolff-Parkinson-White (WPW) syndrome

…The atrial impulse must pass through the atrioventricular node, which delays the impulse due to its slow conduction, before the impulse may reach the ventricles…

Intraventricular conduction delay: bundle branch blocks & fascicular blocks

…efficiency of the pumping function. The primary ECG manifestations of conduction defects are prolonged QRS complexes and altered QRS appearance. These concepts will be discussed…

Nonspecific intraventricular conduction delay (defect)

…participants with baseline ECG examinations. Individuals with nonspecific intraventricular conduction delays were at particularly high risk of death due to arrhythmias. Note that other causes…

Aberrant ventricular conduction (aberrancy, aberration)

…potential occurs. If any component of the ventricular conduction system has not fully repolarized by the time the next impulse reaches the ventricles, the impulse…

Digoxin - ECG changes, arrhythmias, conduction defects & treatment

Drugs and electrolyte imbalance ECG Digoxin ECG changes: arrhythmias, conduction defects and waveform changes Digoxin may be used in patients with heart failure, atrial fibrillation…

Supraventricular and intraventricular conduction defects in myocardial ischemia and infarction

ECG Myocardial ischemia and infarction Conduction defects caused by myocardial ischemia and infarction Bradycardia and conduction defects, such as bundle branch block, fascicular block and…

Left Bundle Branch Block: ECG criteria and clinical implications

Conduction defects ECG Lathundar Left Bundle Branch Block (LBBB) Electrocardiographic Criteria and Characteristics Left bundle branch block is characterized by a significant reorganization of the…

Fascicular block (hemiblock): Left anterior & left posterior fascicular block

Conduction defects ECG Fascicular block (hemiblock): left anterior fascicular block & left posterior fascicular block Fascicular blocks were previously referred to as hemiblocks, but the latter…

First-degree AV block (AV block I, AV block 1)

Conduction defects ECG First degree AV block: ECG criteria, clinical characteristics & management This chapter discusses first degree atrioventricular (AV) block, also referred to as 1st…

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