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Rigshospitalet - a part of Copenhagen University Hospital
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Left ventricular myocardial crypts: morphological patterns and prognostic implications

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AIMS : Left ventricular (LV) myocardial crypts are considered a subtle marker of hypertrophic cardiomyopathy. However, crypts have also been observed in seemingly healthy individuals and it is unknown whether myocardial crypts are associated with adverse outcome.

METHODS AND RESULTS : Myocardial crypts were defined as invaginations traversing >50% of the myocardial wall and assessed using contrast-enhanced cardiac computed tomography in 10 097 individuals from the Copenhagen General Population Study. Number of crypts, location, shape, penetrance, and volume were assessed. The endpoint was a composite of major adverse cardiovascular events and defined as death, myocardial infarction, heart failure, or stroke. Cox regression models were adjusted for clinical variables, medical history, electrocardiographic parameters, and cardiac chamber sizes. A total of 1199 LV myocardial crypts were identified in 915 (9.1%) individuals. Seven hundred (6.9%) had one crypt and 215 (2.1%) had multiple crypts. During a median follow-up of 4.0 years (interquartile range 1.5-6.7), major adverse cardiovascular events occurred in 619 individuals. Individuals with one or multiple crypts had a hazard ratio for major adverse cardiovascular events of 1.00 [95% confidence interval (CI): 0.72-1.40; P = 0.98] and 0.90 (95% CI: 0.47-1.75; P = 0.76), respectively, compared with those with no crypts. No specific pattern of crypt location, shape, penetrance, or volume was associated to an increased hazard ratio for major adverse cardiovascular events.

CONCLUSION : LV myocardial crypts are frequent in the general population and are not associated with intermediate-term major adverse cardiovascular events.

Original languageEnglish
JournalEuropean heart journal cardiovascular Imaging
Volume22
Issue number1
Pages (from-to)75-81
Number of pages7
ISSN1525-2167
DOIs
Publication statusPublished - 1 Jan 2021

ID: 61824364