Skip to main content
. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: Heart Rhythm. 2009 Sep 1;6(11 Suppl):S44–S48. doi: 10.1016/j.hrthm.2009.07.019

Figure 1.

Figure 1

Four different concepts of reentry: A. Reentry around a ring-like anatomical obstacle. Successful reentry occurs when wavelength (black) is smaller than pathlength and allows for a fully excitable gap (white). B. Leading circle reentry around a functional obstacle. Partially excitable gap allows wave front to “bite” its wavetail of refractoriness. The hypothesis suggests that wavefronts invading the center result in refractoriness. C. Two-dimensional spiral wave rotates counter clockwise around an unexcited but excitable core (red dot) in a neonatal rat ventricular myocyte monolayer. D. Computer simulation of a three dimensional scroll wave rotating counter-clockwise.