Open AccessLeft Atrial Dynamics Is Altered in Young Adults With Cryptogenic Ischemic Stroke: A Case‐Control Study Utilizing Advanced Echocardiography
Author(s) -
Pirinen Jani,
Järvinen Vesa,
MartinezMajander Nicolas,
Sinisalo Juha,
Pöyhönen Pauli,
Putaala Jukka
Publication year - 2020
Publication title -
journal of the american heart association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.494
H-Index - 85
ISSN - 2047-9980
DOI - 10.1161/jaha.119.014578
Subject(s) - medicine , cardiology , stroke (engine) , interquartile range , speckle tracking echocardiography , stroke volume , etiology , premature atrial contraction , ischemic stroke , heart rate , ischemia , atrial fibrillation , blood pressure , heart failure , ejection fraction , mechanical engineering , engineering
Background Ischemic stroke in young individuals often remains cryptogenic. Some of these strokes likely originate from the heart, and atrial fibrosis might be one of the etiological mechanisms. In this pilot study, we investigated whether advanced echocardiography findings of the left atrium ( LA ) of young cryptogenic stroke patients differ from those of stroke‐free controls. Methods and Results We recruited 30 cryptogenic ischemic stroke patients aged 18 to 49 years and 30 age‐ and sex‐matched stroke‐free controls among participants of the SECRETO (Searching for Explanations for Cryptogenic Stroke in the Young: Revealing the Etiology, Triggers, and Outcome) study ( NCT 01934725). We measured basic left ventricular parameters and detailed measures of the LA , including 4‐dimensional volumetry, speckle tracking epsilon, strain rate, and LA appendix orifice variation. Data were compared as continuous parameters and by tertiles. Compared with controls, stroke patients had smaller LA reservoir volumes (10.2 [interquartile range, 5.4] versus 13.2 [5.4] mL ; P =0.030) and smaller positive epsilon values (17.8 [8.5] versus 20.8 [10.1]; P =0.023). In the tertile analysis, stroke patients had significantly lower left atrial appendage orifice variation (3.88 [0.75] versus 4.35 [0.90] mm; P =0.043), lower LA cyclic volume change (9.2 [2.8] versus 12.8 [3.5] mL ; P =0.023), and lower LA contraction peak strain rate (−1.8 [0.6] versus −2.3 [0.6]; P =0.021). We found no statistically significant differences in left ventricular measures. Conclusions This preliminary comparison suggests altered LA dynamics in young patients with cryptogenic ischemic stroke, and thus that LA wall pathology might contribute to these strokes. Our results await confirmation in a larger sample.