Cardiology in the Young

Brief Reports

Feasibility of conductance catheter-derived pressure–volume loops to investigate ventricular mechanics in shunted single ventricles

Ryan J. Buttsa1, Tain-Yen Hsiaa2 and G. Hamilton Bakera1 c1 for the MOCHA investigators

a1 Department of Pediatrics, Division of Cardiology, Medical University of South Carolina, Charleston, South Carolina, United States of America

a2 Department of Cardiothoracic Surgery, Great Ormond Street Hospital for Children, London, United Kingdom

Abstract

We present pressure–volume loops obtained from two patients with single-ventricle physiology, one with a modified Blalock–Taussig shunt and one with a right ventricle-to-pulmonary artery shunt. The dissimilarities in pressure–volume loop contour and related indices highlight potentially important differences in ventricular mechanics between the shunt types.

(Received April 04 2012)

(Accepted October 21 2012)

(Online publication January 25 2013)

Keywords

  • Single ventricle;
  • RV–PA shunt;
  • Norwood procedure;
  • pressure–volume loop;
  • ventricular mechanics

Correspondence

c1 Correspondence to: Dr G. Hamilton Baker, MD, Department of Pediatrics, Division of Cardiology, Medical University of South Carolina, 165 Ashley Avenue, Charleston, South Carolina 29425, United States of America. Tel: +1 843 792 3286; Fax: +1 843 792 3284; E-mail: baker@musc.edu