François CJ, Barton GP, Corrado PA, Broman AT, Chesler NC, Eldridge MW, Wieben O, Goss KN. Diffuse Myocardial Fibrosis at Cardiac MRI in Young Adults Born Prematurely: A Cross-sectional Cohort Study.
Radiol Cardiothorac Imaging 2022;
4:e210224. [PMID:
35833164 PMCID:
PMC9274311 DOI:
10.1148/ryct.210224]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 03/04/2022] [Accepted: 04/27/2022] [Indexed: 11/17/2022]
Abstract
Purpose
To measure native T1 values, a marker of diffuse fibrosis, by using
cardiac MRI (CMR) in young adults born prematurely.
Materials and Methods
This secondary analysis of a prospective cohort study included young
adults born moderately to extremely preterm and age-matched, term-born
participants. CMR was performed with a 3.0-T imager that included cine
imaging for the quantification of left ventricular (LV) and right
ventricular (RV) volumes and function and native saturation recovery T1
mapping for the assessment of diffuse myocardial fibrosis. Values
between preterm and term were compared by using the Student
t test. Associations between T1 values and other
variables were analyzed by using linear regression and multivariate
regression.
Results
Of the 50 young-adult participants, 32 were born preterm (mean age, 25.8
years ± 4.2 [SD]; 23 women) and 18 were born at term (mean age,
26.2 years ± 5.4; 10 women). Native T1 values were significantly
higher in participants born preterm than in participants born at term
(1477 msec ± 77 vs 1423 msec ± 71, respectively;
unadjusted P = .0019). Native T1 values appeared to be
positively associated with indexed LV end-diastolic and end-systolic
volumes (β = 2.1, standard error = 0.7 and β = 3.8,
standard error = 1.2, respectively), the RV end-diastolic volume index
(β = 1.3, standard error = 0.6), and the LV mass index (β
= 2.5, standard error = 0.9). Higher T1 values may be associated with
reduced cardiac systolic strain measures and diastolic strain measures.
Five-minute Apgar scores were inversely associated with native T1
values.
Conclusion
Young adults born moderately to extremely preterm exhibited significantly
higher native T1 values than age-matched, term-born young adults.
Keywords: MRI, Cardiac, Heart, Left Ventricle,
Cardiomyopathies
Clinical trial registration no. NCT03245723
Published under a CC BY 4.0 license
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