Daily Archive 05.12.2018

Signs of ventricular extrasystoles on ECG

Signs of ventricular extrasystoles on ECG

• For ventricular extrasystoles, premature appearance of a wide and deformed QRS complex is characteristic.
• Unlike the atrial extrasystoles, there is always a compensatory pause before the ventricular one.
• Ventricular extrasystole – a frequent disturbance of the heart rhythm. It can be observed both in healthy people, without being accompanied by any other symptoms, or in people with a heart condition.

Ventricular extrasystole is a frequent disturbance of the heart rhythm, which can be observed in healthy people, without being accompanied by any other symptoms, but more often in people with various heart diseases, in particular, coronary heart disease, heart defects, cardiomyopathies, myocarditis. The cause of ventricular premature beats is an ectopic focus of excitation in the pancreas or LV.

Under the ventricular extrasystole understand the premature contraction of the ventricles, caused by a focus of excitation, which is located in the ventricles themselves. Using electrocardiography, it is easier to recognize ventricular premature beats than supraventricular (atrial premature beats). For ventricular extrasystoles, premature broad (more than 0.11 s) and deformed QRS complexes are characteristic, which by their configuration resemble the blockade of PG feet.

So, when extrasystoles occur in the right ventricle (RV), it is excited earlier than the left ventricle (LV), therefore a wide QRS complex is recorded on the ECG, resembling the blockade of LNPH in configuration, as LV excitement occurs late. If the center of extrasystole is in the LV, then the configuration of the QRS complex resembles the blockade of PNPG.