In the article “Counterclockwise and clockwise typical flutter and the transverse conduction barrier—Mirror-image circuits?,” by Niraj Varma, MD, PhD and Sarah K. Chomos, BS, published in the December 2022 issue of Heart Rhythm Case Reports (volume 8, issue 12, pp 854-855; doi: https://doi.org/10.1016/j.hrcr.2022.09.005), the following acknowledgment was intended to be included: “Open access publication funded by Abbott Medical.” The authors regret this error.
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- Counterclockwise and clockwise typical flutter and the transverse conduction barrier—Mirror-image circuits?HeartRhythm Case ReportsVol. 8Issue 12
- PreviewCounterclockwise (CCW) and clockwise (CW) forms of typical atrial flutter are regarded as mirror-image reentrant circuits,1 although they rarely are observed in the same patient. Transverse conduction block in the right atrium is considered the conduction barrier necessary for circuit stability for both circuits, but its basis and location have been controversial.2 This barrier has not been high-density mapped in humans.
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