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Significant improvement of survival by T2* CMR in thalassemia major

Session Poster session 2

Speaker Antonella Meloni

Event : ESC Congress 2015

  • Topic : imaging
  • Sub-topic : Cardiac Magnetic Resonance (CMR)
  • Session type : Poster Session

Authors : A Pepe (Pisa,IT), A Meloni (Pisa,IT), GC Del Vecchio (Bari,IT), MA Romeo (Catania,IT), MR Gamberini (Ferrara,IT), F Bonetti (Pavia,IT), MG Neri (Pisa,IT), G Restaino (Campobasso,IT), V Positano (Pisa,IT), C Borgna-Pignatti (Ferrara,IT)

Authors:
A. Pepe1 , A. Meloni1 , G.C. Del Vecchio2 , M.A. Romeo3 , M.R. Gamberini4 , F. Bonetti5 , M.G. Neri1 , G. Restaino6 , V. Positano1 , C. Borgna-Pignatti7 , 1Fondazione G. Monasterio CNR-Regione Toscana, CMR Unit - Pisa - Italy , 2University of Bari, Pediatric Unit - Bari - Italy , 3A.O. “Policlinico-Vittorio Emanuele”, University of Catania, Division of Hematology, Unit of Thalassemia - Catania - Italy , 4Arcispedale Sant'Anna, Pediatria, Adolescentologia e Talassemia - Ferrara - Italy , 5Policlinic Foundation San Matteo IRCCS, Pediatric Hematology Unit - Pavia - Italy , 6Università Cattolica del Sacro Cuore, Dipartimento di Radiologia - Campobasso - Italy , 7University of Ferrara, Dept. of Pediatrics - Ferrara - Italy ,

Topic(s):
Cardiovascular Magnetic Resonance (CMR)

Citation:
European Heart Journal ( 2015 ) 36 ( Abstract Supplement ), 246-247

Background: In 2004 seven Italian centers reported survival data for patients with thalassemia major (TM) and showed that heart disease due to iron overload was the most common cause of death (Borgna et al Haematologica 2004). In the same years the accurate and noninvasive assessment of cardiac siderosis was made possible in Italy by the introduction of the T2* cardiovascular magnetic resonance (CMR).

Purpose: We aimed to evaluate if the deployment of T2* CMR had an impact on the mortality rate.

Methods: Four centers contributed to the present study, updating the data of the enrolled patients until August 31, 2010. For the patients who died, the date of the death represented the end of the study. 577 patients (264 F) were included.

Results: One-hundred and fifty-nine (27.6%) patients died, 124 of whom (77.9%) died before the year 2000.

MRI was not performed in 406 patients (70.4%) and no patient had been scanned before his/her death.

Among the survivors, MRI was not performed in the 59% of the cases (P<0.0001). The absence of an MRI scan was a significant univariate prognosticator for death (HR=43.25, 95% CI: 11.32–165.33, P<0.0001).

The study was restricted to the patients dead after 2004 (19/159=12%) or followed until August 2010 (N=357). In this subgroup of 376 patients, MRI was not performed in the 52.4% of the survivors and in all dead patients (P<0.0001). The absence of a MRI exam was reconfirmed as a strong predictive factor for death (HR=49.37, 95% CI: 1.08–2263.24, P=0.046). The Figure shows the Kaplan–Meier curve.

Conclusions: Our data suggests that the use of T2* CMR, that enables individually tailored chelation regimes reducing the likelihood of developing decompensated cardiac failure, allowed the reduction of cardiac mortality in chronically transfused TM patients.

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