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Updated: May 11, 2026

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09:52

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Published on: October 26, 2019

在导管切除过程中心房动周期长度和诱导性的变化及其与结果的关系

Michel Haïssaguerre1, Prashanthan Sanders, Mélèze Hocini

  • 1Hôpital Cardiologique du Haut-Lévêque, Avenue de Magellan, 33604 Bordeaux, France. jacques.clementy@pu.u-bordeaux2.fr

Circulation
|June 9, 2004
PubMed
概括

心房移除延长了心房的周期长度,减少了AF频率. 在切除过程中终止AF和预防诱导性预测了成功的结果.

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相关概念视频

Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
Induction01:16

Induction

An emf is induced when the magnetic field in a coil is changed by pushing a bar magnet into or out of the coil. emfs of opposite signs are produced by motion in opposite directions, and the directions of emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important. The faster the motion, the greater the emf. Additionally, there is no emf when the magnet is stationary relative to the coil.
A...
Lenz's Law01:15

Lenz's Law

The direction in which the induced emf drives the current around a wire loop can be found through the negative sign. However, it is usually easier to determine this direction with Lenz's law, named in honor of its discoverer, Heinrich Lenz (1804–1865). Lenz's law states that the direction of the induced emf drives the current around a wire loop always to oppose the change in magnetic flux that causes the emf.
If a bar magnet is moved toward a coil such that the magnetic flux through the coil...