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.
Similar to atrial pacing, if the pacemaker is set at 60 beats/min, the pacemaker will only pace the ventricle if the rate falls below 60 beats/min or there is a pause of one second (60 beats/min Ã· 60 sec/min). If the native rate is slow, there will be 100 percent ventricular pacing (figure 1).