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22-11-2019 | Heart Beat | Uitgave 6/2020 Open Access

Netherlands Heart Journal 6/2020

An anterolateral papillary muscle rupture due to inferoposterior ischaemia

Netherlands Heart Journal > Uitgave 6/2020
M. J. Schuuring, D. Robbers-Visser, A. H. G. Driessen, J. J. Piek
An 80-year-old man with a history of atrial fibrillation developed heart failure in 3 days. Soon after admission he went into cardiogenic shock. Electrocardiography demonstrated inferoposterior ischaemia (Fig.  1a). Transthoracic echocardiography demonstrated an anterolateral papillary muscle (APM) rupture, which was confirmed by transoesophageal echocardiography (Fig.  1b). An APM rupture was unexpected because of dual supply from the left anterior descending (LAD) and left circumflex (LCX) arteries [ 14]. The aetiology may be explained by the anatomy of the coronary circulation. Urgent angiography demonstrated an occlusion of the right coronary artery (RCA) with collateral vessels to the distal circumflex coronary (LCX) artery, a moderate distal left main stenosis, and both a subtotal LCX stenosis and a significant LAD lesion with collateral vessels to the RCA. Inferoposterior ischaemia likely induced coronary steal flow from the LAD, because the LAD stenosis was less severe than the RCA and LCX stenoses. Consequently, subendocardial ischaemia of the anterior wall emerged and led to an APM rupture. Urgent mitral valve replacement and concomitant coronary artery bypass grafting were performed. The haemodynamic parameters improved postoperatively.

Conflict of interest

M.J. Schuuring, D. Robbers-Visser, A.H.G. Driessen and J.J. Piek declare that they have no competing interests.
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://​creativecommons.​org/​licenses/​by/​4.​0/​), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Netherlands Heart Journal

Het Netherlands Heart Journal wordt uitgegeven in samenwerking met de Nederlandse Vereniging voor Cardiologie en de Nederlandse Hartstichting. Het tijdschrift is Engelstalig en wordt gratis beschikbaa ...

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