| 单词 | pacemaker |
| 释义 | pacemaker (once / 23734 pages) 1n 2n A pacemaker is a medical device that controls a person's heartbeat. A patient only has a pacemaker implanted when his own heart isn't working well on its own. The human heart has a natural pacemaker that makes it beat at an appropriate rate to keep blood flowing throughout the body. Sometimes it doesn't work right, because of some kind of blockage or other problem that causes the heart to beat too slowly. In these cases, cardiologists — or heart doctors — will often surgically implant an electronic pacemaker as a replacement. Pacemaker research began in 1899, but it wasn't until 1958 that the first patients received these lifesaving devices. WORD FAMILYpacemaker: pacemakers USAGE EXAMPLESThe flaws were found in the radio-based communications used to update implants, including pacemakers, and read data from them. BBC(Dec 01, 2016) Finally, doctors are testing a device, sort of a pacemaker for the brain. Washington Times(Nov 23, 2016) Dog research alone, he says, has improved our understanding of diseases like cancer and hemophilia and helped develop pacemakers and organ transplants. Science Magazine(Nov 21, 2016) 1 1n a horse used to set the pace in racing Syn|Hyper pacer, pacesetter bangtail, race horse, racehorse a horse bred for racing 2n a leading instance in its field 2Syn|Hyper pacesetter example, exemplar, good example, model something to be imitated 1n a specialized bit of heart tissue that controls the heartbeat Syn|Hyper SA node, cardiac pacemaker, sinoatrial node cardiac muscle, heart muscle the muscle tissue of the heart; adapted to continued rhythmic contraction 2n an implanted electronic device that takes over the function of the natural cardiac pacemaker Syn|Hyper artificial pacemaker electronic device a device that accomplishes its purpose electronically |
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