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Patent foramen ovale electrocardiogram

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Ifeoma Odukwe, M.D. [2], Priyamvada Singh, M.B.B.S. [3], Kristin Feeney, B.S. [4]

Overview

Overview

Stroke patients with patent foramen ovale may be identified with the crochetage pattern seen on ECG. The crochetage pattern is described as an M-shaped bifid notch on the ascending branch, or on the zenith, of the R wave in inferior ECG leads (II, III, aVF).

Electrocardiogram

Electrocardiogram

Findings on ECG that may be seen in patients with patent foramen ovale include:[1][2]

  • Crochetage pattern: An M-shaped bifid notch on the ascending branch, or on the zenith, of the R wave in inferior ECG leads (II, III, aVF).
  • Right bundle branch block (RBBB)
  • P wave abnormalities
References

References

  1. Ay H, Buonanno FS, Abraham SA, Kistler JP, Koroshetz WJ (1998). “An electrocardiographic criterion for diagnosis of patent foramen ovale associated with ischemic stroke”. Stroke. 29 (7): 1393–7. doi:10.1161/01.str.29.7.1393. PMID 9660393.
  2. Belvís R, Leta RG, Martínez-Domeño A, Planas F, Martí-Fàbregas J, Carreras F; et al. (2007). “Electrocardiographic findings in patients with cryptogenic ischemic stroke and patent foramen ovale”. J Electrocardiol. 40 (2): 168–71. doi:10.1016/j.jelectrocard.2006.07.005. PMID 16963068.


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