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Ventricular Premature Beats: Difference between revisions
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{{Chapter|Ventricular Arrhythmias}} | {{Chapter|Ventricular Arrhythmias}} | ||
[[Image:Rhythm_ventricular_premature.png|thumb| The arrow indicates a ventricular extrasystole (VES).]] | [[Image:Rhythm_ventricular_premature.png|thumb| The arrow indicates a ventricular extrasystole (VES).]] | ||
[[Image:Rhythm_bigemini.png|thumb|Bigemini: every sinus beat is followed by a ventricular extrasystole]] | |||
A VPB is an [[Ectopic Beats|ectopic beat]] that origins from the ventricles. VPBs are hardly conducted by the specialised conduction system and therefore are broad. The QRS width is at least > 0.12 seconds, but often very broad at around 0.16-0.20 seconds. | A VPB is an [[Ectopic Beats|ectopic beat]] that origins from the ventricles. VPBs are hardly conducted by the specialised conduction system and therefore are broad. The QRS width is at least > 0.12 seconds, but often very broad at around 0.16-0.20 seconds. | ||
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*'''monomorphic''': all VPBs have the same configuration and thus have a mutual focus of origin. | *'''monomorphic''': all VPBs have the same configuration and thus have a mutual focus of origin. | ||
*'''multiformic''': the complexes have different configurations. | *'''multiformic''': the complexes have different configurations. | ||
*'''Bigemini''': every sinus beat is followed by a ventricular extrasystole. | |||
*'''Trigemini''': every second sinus beat is follow by a ventricular extrasystole. | |||
Three or more consecutive VPBs (but in total of no more than 30 seconds duration) are called a non-sustained [[Ventricular Tachycardia|ventricular tachycardia]]. | Three or more consecutive VPBs (but in total of no more than 30 seconds duration) are called a non-sustained [[Ventricular Tachycardia|ventricular tachycardia]]. | ||
{{clr}} | {{clr}} | ||