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. 2017 Mar;14(3):161-165.
doi: 10.11909/j.issn.1671-5411.2017.03.007.

Diagnosis of interatrial block

Antoni Bayés de Luna  1 , Adrian Baranchuk  2 , Luis Alberto Escobar Robledo  1 , Albert Massó van Roessel  1 , Manuel Martínez-Sellés  3
Affiliations

Diagnosis of interatrial block

Antoni Bayés de Luna et al. J Geriatr Cardiol. 2017 Mar.
No abstract available

Keywords: Atrial fibrosis; Diagnosis; Interatrial block.

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Figures

Figure 1.
Figure 1.. The second part of P wave is isodiphasic in lead II but “positive-negative” in lead III and VF.
Figure 2.
Figure 2.. ECG features of normal P wave (A), P wave of P-IAB (B), and P wave of A-IAB (C).
A-IAB: advanced interatrial blocks; P-IAB: partial interatrial blocks.
Figure 3.
Figure 3.. Typical example of A-IAB with clear P wave “positive-negative” in II, III and VF with a P wave duration > 200 ms.
A-IAB: advanced interatrial blocks.
Figure 4.
Figure 4.. In this case of A-IAB (P = about 160 ms) due to the presence of extensive LA fibrosis, the first part of P wave in III, and VF is isodiphacic, but the onset of P wave in II clearly starts before the negatively of P in III and VF.
A-IAB: advanced interatrial blocks; LA: left atrium.
See this image and copyright information in PMC

References

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