An Access field property that limits the number of characters that can be typed into a text or number field. Foreign key. A field in one table that is also the primary key of a second table; it is used to create a relationship with that table.
burst pacing. Also found in: Dictionary, Thesaurus, Wikipedia. fast pacing. A term defined in the context of implantable pacemakers for the deliveryâe.g., atrial burst pacingâof rapid, multiple electrical pulses, to pace the heart faster than its intrinsic rate. Fast pacing is used for ventricular tachycardia, to try to break the tachycardia before it progresses to ventricular fibrillation. burst pacing.
Epicardial pacing wires: atrial and/or ventricular placement. Epicardial pacing wires were historically placed only on the right ventricle. In this position they allow ventricular stimulation, which is usually not as mechanically efficient as endogenous depolarisation. More importantly, there is no co-ordinated atrial contraction.