Myocardial Damage Detected by Late Gadolinium Enhancement Cardiac Magnetic Resonance Is Uncommon in Peripartum Cardiomyopathy.

Published

Journal Article

In peripartum cardiomyopathy, the prevalence of focal myocardial damage detected by late gadolinium enhancement (LGE) cardiovascular magnetic resonance is important to elucidate mechanisms of myocardial injury and cardiac dysfunction. LGE equates irreversible myocardial injury, but LGE prevalence in peripartum cardiomyopathy is uncertain.Among 100 women enrolled within the Investigations of Pregnancy Associated Cardiomyopathy cohort, we recruited 40 women at 13 centers to undergo LGE cardiovascular magnetic resonance, enrolled within the first 13 weeks postpartum. Follow-up scans occurred at 6 months postpartum, and death/transplant rates at 12 months. Baseline characteristics did not differ significantly in the parent cohort according to cardiovascular magnetic resonance enrollment except for mechanical circulatory support. LGE was noted only in 2 women (5%) at baseline. While left ventricular dysfunction with enlargement was prevalent at baseline cardiovascular magnetic resonance scans (eg, ejection fraction 38% [Q1-Q3 31-50%], end diastolic volume index=108 mL/m2 [Q1-Q3 83-134 mL/m2]), most women demonstrated significant improvements at 6 months, consistent with a low prevalence of LGE. LGE was not related to baseline clinical variables, ejection fraction, New York Heart Association heart failure class, or mortality. Neither of the 2 women who died exhibited LGE. LGE was inversely associated with persistent left ventricular ejection fraction at 6 months (P=0.006).Factors other than focal myocardial damage detectable by LGE explain the initial transient depressions in baseline left ventricular ejection fraction, yet focal myocardial damage may contribute to persistent myocardial dysfunction and hinder recovery in a small minority. Most women exhibit favorable changes in ventricular function over 6 months.URL: http://www.clinicaltrials.gov. Unique identifier: NCT01085955.

Full Text

Duke Authors

Cited Authors

  • Schelbert, EB; Elkayam, U; Cooper, LT; Givertz, MM; Alexis, JD; Briller, J; Felker, GM; Chaparro, S; Kealey, A; Pisarcik, J; Fett, JD; McNamara, DM; Investigations of Pregnancy Associated Cardiomyopathy (IPAC) Investigators,

Published Date

  • April 3, 2017

Published In

Volume / Issue

  • 6 / 4

PubMed ID

  • 28373243

Pubmed Central ID

  • 28373243

Electronic International Standard Serial Number (EISSN)

  • 2047-9980

International Standard Serial Number (ISSN)

  • 2047-9980

Digital Object Identifier (DOI)

  • 10.1161/JAHA.117.005472

Language

  • eng