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  • Oral presentation
  • Open Access

Weight reduction surgery is associated with substantial long term reduction in left ventricular mass

  • Rajarshi Banerjee1,
  • Oliver Rider1,
  • Jane Francis1,
  • Cameron Holloway1,
  • Andrew Johnson1 and
  • Stefan Neubauer1
Journal of Cardiovascular Magnetic Resonance201012(Suppl 1):O10

Published: 21 January 2010


Body Mass IndexObesityGastric BypassLeft Ventricular HypertrophyLeft Ventricular Mass


Uncomplicated obesity is associated with left ventricular hypertrophy, which is an independent risk factor for cardiovascular events. Excess body weight has a linear relationship with vascular mortality. We have previously shown that weight reduction surgery is associated with LV mass reduction 1 year later. Here we have used CMR to investigate the effects of weight reduction surgery at 3 years.


We followed up 6 patients who had undergone Roux-en-Y gastric bypass surgery for obesity (Body Mass Index 46.7 ± 3.8 kg/m2). All subjects had no other identifiable cardiovascular risk factors: diabetes, hypertension, hypercholesterolaemia, smoking, obstructive sleep apnoea or known cardiac disease. The subjects had CMR scans (1.5 Tesla, Siemens, Erlangen, Germany) and body composition analysis performed at baseline, 1 and 3 years.


At one year, there was a significant reduction in BMI by 13.2 ± 3.8 kg/m2, representing 28% of pre-operative BMI (Figure 1). LV mass had decreased by 15% from 149 g to 126 g (p < 0.01, Figure 2) during this period. At 3 years, although body mass index did not decrease further significantly, there was a significant additional reduction in LV mass from 126 g to 110 g (p = 0.04), representing a further 11% reduction in LV mass from baseline.
Figure 1
Figure 1

Figure 1

Figure 2
Figure 2

Figure 2


Over 3 years, weight reduction surgery is associated with a significant progressive reduction in LV mass, which continues even after BMI has stabilised after 1 year. This represents long-term LV remodelling in response to marked weight loss.

Authors’ Affiliations

University of Oxford, Oxford, UK


© Banerjee et al; licensee BioMed Central Ltd. 2010

This article is published under license to BioMed Central Ltd.