- Numbering aberrant rhythms
Unreferenced date December 2009 Image Bigeminy2010.JPG thumb 350px A rhythm strip demonstrating bigeminy Bigeminy Latin Bi Two Gemini twins is a descriptor for a heart cardiac arrhythmia arrhythmia in which abnormal heart beats occur every other concurrent beat. A typical example is with bigeminal premature ventricular beats, also known as a premature ventricular contraction premature ventricular contractions complexes PVC . Following the PVC there is a pause and then the normal beat returns only to be followed by another PVC. The continuation of this pairing of beats is an example of bigeminy. These descriptors can increase depending on the number of beats involved in the abnormal system. If every other beat is abnormal, you can describe it as bigeminal. If every third beat is aberrant, it is trigeminal every fourth would be quadrigeminal. Typically, if every fifth or more beat is abnormal, the aberrant beat would be termed occasional. Bigeminy is contrasted with couplets , which are paired abnormal beats. If, for example, these concurrent PVCs number three, they are called triplets and are considered as a brief run of non sustained Tachycardia Ventricular tachycardia or NS VT. PVCs are not the only aberrant beat that makes use of these adjectives others are premature atrial contraction s, parasystole , and escape complex es. Examples Bigeminal premature ventricular contractions Normal, PVC, Normal, PVC... Trigeminal premature atrial contractions Normal, Normal, PAC, Normal, Normal, PAC... Quadrageminal premature ventricular contractions Normal, Normal, Normal, PVC Normal, Normal, Normal, PVC... Occasional escape complexes Normal, Normal, Normal, Normal, Pause, Escape... Bigeminal Couplets Normal, Normal, PVC, PVC, Normal, Normal, PVC, PVC... NS VT Normal, Normal, PVC, PVC, PVC, PVC, Normal, Normal, PVC....etc Heart diseases DEFAULTSORT Numbering Aberrant Rhythms Category Cardiology Category Cardiac electrophysiology ... more details
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