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Accessory papillary muscles and papillary muscle hypertrophy are associated with sudden cardiac arrest of unknown cause

Authors
 Jae-Sun Uhm ; Jong-Chan Youn ; Moon-Hyoung Lee ; Hui-Nam Pak ; Boyoung Joung ; Geu-Ru Hong ; Chi Young Shim ; Jin-Kyu Park ; Junbeom Park ; Hye-Jeong Lee 
Citation
 International Journal of Cardiology, Vol.197 : 285~291, 2015 
Journal Title
 International Journal of Cardiology 
ISSN
 0167-5273 
Issue Date
2015
Abstract
BACKGROUND: The present study was performed for elucidating the associations between the morphology of the papillary muscles (PMs) and sudden cardiac arrest (SCA). METHODS: We retrospectively reviewed history, laboratory data, electrocardiography, echocardiography, coronary angiography, and cardiac CT/MRI for 190 patients with SCA. The prevalence of accessory PMs and PM hypertrophy in patients with SCA of unknown cause was compared with that in patients with SCA of known causes and 98 age- and sex-matched patients without SCA. An accessory PM was defined as a PM with origins separated from the anterolateral and posteromedial PMs, or a PM that branched into two or three bellies at the base of the anterolateral or posteromedial PM. PM hypertrophy was defined as at least one of the two PMs having a diameter of ≥1.1cm. RESULTS: In 49 patients (age 49.9±15.9years; 38 men) the cause of SCA was unknown, whereas 141 (age 54.2±16.6years; 121 men) had a known cause. The prevalence of accessory PMs was significantly higher in the unknown-cause group than in the known-cause group (24.5% and 7.8%, respectively; p=0.002) or the no-SCA group (7.1%, p=0.003). The same was true for PM hypertrophy (unknown-cause 12.2%, known-cause 2.1%, p=0.010; no SCA group 1.0%, p=0.006). By logistic regression, accessory PM and PM hypertrophy were independently associated with sudden cardiac arrest of unknown cause. CONCLUSIONS: An accessory PM and PM hypertrophy are associated with SCA of unknown cause.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/140449
DOI
10.1016/j.ijcard.2015.06.097
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0167527315300346
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