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Correspondence
Personalised external aortic root support
  1. Tom Treasure1,
  2. J JM Takkenberg2,
  3. John Pepper3
  1. 1 Clinical Operational Research Unit, Department of Mathematics, University College London, London, UK
  2. 2 Department of CardioThoracic Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands
  3. 3 Department of Cardiac Surgery, Royal Brompton Hospital, London, UK
  1. Correspondence to Professor Tom Treasure, Clinical Operational Research Unit, Department of Mathematics, University College London, London WC1H 0BT, UK; tom.treasure{at}gmail.com

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Dear Editor, Valve replacing and valve-sparing root replacement were devised on the operating table and evolved by trial and error. Different times set different standards. By contrast, after 4 years of research collaboration between surgeons, anatomists and engineers (2000–2004), personalised external aortic root support (PEARS) has followed a standard protocol in 42 patients with over 170 patient-years of intention-to-treat analysis, and has been systematically and rigorously evaluated.

Cameron’s ‘two technical points’1 do not accurately reflect how this operation is in fact performed.2 The proximal …

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