Predictors of ventricular remodelling in patients with reperfused acute myocardial infarction and left ventricular dysfunction candidates for bone marrow cell therapy: insights from the BONAMI trial

Eur J Nucl Med Mol Imaging. 2016 Apr;43(4):740-8. doi: 10.1007/s00259-015-3279-z. Epub 2015 Dec 15.


Purpose: Few data are available regarding the relation of left ventricular (LV) mechanical dyssynchrony to remodelling after acute myocardial infarction (MI) and stem cell therapy. We evaluated the 1-year time course of both LV mechanical dyssynchrony and remodelling in patients enrolled in the BONAMI trial, a randomized, multicenter controlled trial assessing cell therapy in patients with reperfused MI.

Methods: Patients with acute MI and ejection fraction (EF) ≤ 45 % were randomized to cell therapy or to control and underwent thallium single-photon emission computed tomography (SPECT), radionuclide angiography, and echocardiography at baseline, 3 months, and 1 year. Eighty-three patients with a comprehensive 1-year follow-up were included. LV dyssynchrony was assessed by the standard deviation (SD) of the LV phase histogram using radionuclide angiography. Remodelling was defined as a 20 % increase in LV end-systolic volume index (LVESVI) at 1 year.

Results: At baseline, LVEF, wall motion score index, and perfusion defect size were significantly impaired in the 43 patients (52 %) with LV remodelling (all p < 0.001), without significant increase in LV mechanical dyssynchrony. During follow-up, there was a progressive increase in LV SD (p = 0.01). Baseline independent predictors of LV remodelling were perfusion SPECT defect size (p = 0.001), LVEF (p = 0.01) and a history of hypertension (p = 0.043). Bone marrow cell therapy did not affect the time-course of LV remodelling and dyssynchrony.

Conclusions: LV remodelling 1 year after reperfused MI is associated with progressive LV dyssynchrony and is related to baseline infarct size and ejection fraction, without impact of cell therapy on this process.

Trial registration: NCT00200707.

Keywords: Cell therapy; Dyssynchrony; Echocardiography; Myocardial infarction; Single photon emission computer tomography; Ventricular remodelling.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Bone Marrow Transplantation / adverse effects*
  • Echocardiography
  • Female
  • Humans
  • Male
  • Middle Aged
  • Myocardial Infarction / diagnostic imaging
  • Myocardial Infarction / therapy*
  • Myocardial Perfusion Imaging*
  • Radiopharmaceuticals
  • Thallium Radioisotopes
  • Tomography, Emission-Computed, Single-Photon*
  • Ventricular Dysfunction, Left*
  • Ventricular Remodeling*


  • Radiopharmaceuticals
  • Thallium Radioisotopes

Associated data