LGE prevalence and patterns in severe aortic stenosis: When “junctional” means the same

Sérgio Maltês, João Abecasis, Rita Reis Santos, Pedro Lopes, Luis Oliveira, Sara Guerreiro, Pedro Freitas, António Ferreira, Tiago Nolasco, Victor Gil, Nuno Cardim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Background: Left ventricular (LV) remodeling in severe aortic valve stenosis (AS) is a complex process that goes beyond hypertrophic response. Reparative/replacement fibrosis is considered irreversible and has recognized value in both risk stratification and prognosis. Currently, cardiac magnetic resonance (CMR) is the gold-standard imaging technique for fibrosis identification through late gadolinium enhancement (LGE) assessment. However, its prevalence and distribution are quite variable among series. Our goal was to assess LGE prevalence and patterns in severe AS. Methodology: Single-center prospective cohort of 140 patients with severe symptomatic high-gradient AS (mean age 72 ± 8 years; mean valvular transaortic gradient 61 ± 18 mmHg; mean LV ejection fraction by echocardiogram 58 ± 9%) undergoing surgical aortic valve replacement. Those with previous myocardial infarction and/or non-ischemic cardiomyopathy were excluded. All patients performed 1.5 T LGE-CMR prior to surgery. Results: Overall, 103 patients (74%) had non-ischemic LGE (median LGE mass 2.8 g [IQR 0.0–7.8] g), many of them with combined mid-wall and junctional enhancement pattern (36%). LGE was most frequently observed in the mid-basal segments of the interventricular septum. Seventy-four patients (53%) had non-exclusively junctional LGE. Contrary to those with junctional enhancement, patients with non-exclusively junctional LGE had higher LV volumes/mass, worse LV ejection fraction and worse global longitudinal strain. Conclusion: Among patients with severe, symptomatic, high-gradient AS, LGE is frequent, primarily affecting the mid-basal interventricular septum. Contrary to junctional LGE, the presence of non-junctional LGE seems to correlate with adverse markers of LV remodeling.

Original languageEnglish
Pages (from-to)159-163
JournalInternational Journal of Cardiology
Volume378
Early online date2023
DOIs
Publication statusPublished - 23 May 2023

Keywords

  • Aortic stenosis
  • Cardiac magnetic resonance
  • Late gadolinium enhancement
  • Right ventricle insertion points

Fingerprint

Dive into the research topics of 'LGE prevalence and patterns in severe aortic stenosis: When “junctional” means the same'. Together they form a unique fingerprint.

Cite this