pacemaker

(redirected from pacemaking)
Also found in: Dictionary, Thesaurus, Medical.
Related to pacemaking: fixed rate pacemaker, demand pacemaker

pacemaker

1. Anatomy a small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of the heart
2. Med an electronic device for use in certain cases of heart disease to assume the functions of the natural cardiac pacemaker

pacemaker

[′pās‚māk·ər]
(medicine)
A pulsed battery-operated oscillator implanted in the body to deliver electric impulses to the muscles of the lower heart, either at a fixed rate or in response to a sensor that detects when the patient's pulse rate slows or ceases. Also known as cardiac pacemaker; heart pacer.
References in periodicals archive ?
Knowing that traffic problems can upset all plans in a 1,200-metre sprint, Bouresly said jockey Mick Kinane could be forced to resort to pacemaking tactics to ensure his horse had the best chance.
Vespone would probably be an unlikely runner, as Millstreet would be more likely to take the pacemaking duties.
In the 1950s, when television was only in black and white, so were the rules: there must be no outside assistance, whether coaching advice from the sidelines, or - heaven forbid - pacemaking.
Relegated to pacemaking does not bother Mayock, who is employed by the Sports Council for Wales as national development officer.
Now they are finding life rather more difficult in Division One but the boys from the boonies can stay in the pacemaking pack, creating problems for the likes of leaders Harborne and Leamington.
In the finale Lughill Arthur is another scratch dog who hasn't been badly treated and could concede the start at the expense of pacemaking Star Tiger who runs on gamely.
The winning distance was seven lengths over the pacemaking Twentytwoandchange, with Rahn a half length away in third.
Unusually, there is a distinct lack of early pace in tonight's final and pacemaking duties may be set by Stainless Steel, who posted an identical time to Farloe Tango when he scorched home by almost five lengths from Sinbad in the opening round.
All in all it was a tiring but out-of-this-world 48 hours which the 33-year-old took in her stride before heading back south to prepare for a stint of pacemaking at this weekend's Brighton Marathon.
Willie Mullins' imperious performer cruised by his pacemaking stable companion Thousand Stars before the final flight under a confident ride from Ruby Walsh and he went on to win as he liked.
MOON DICE, trained by Paul Flynn and ridden by Tom Doyle, collared the pacemaking Fosters Cross to land the Guinness Galway Handicap Hurdle at 20-1.
Dai Rees' Rith Bob made it three wins in a row when coming home 10 lengths ahead of Brennstown and Lydstep Hills took up the running three fences out to beat the pacemaking Jimmy Bedney by four lengths.