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Original article
Aortic valve prosthesis–patient mismatch and exercise capacity in adult patients with congenital heart disease
  1. Ymkje J van Slooten1,2,3,
  2. Joost P van Melle1,
  3. Hendrik G Freling1,3,4,
  4. Berto J Bouma5,
  5. Arie PJ van Dijk6,
  6. Monique RM Jongbloed7,
  7. Martijn C Post8,
  8. Gertjan T Sieswerda9,
  9. Anna Huis in ‘t Veld1,
  10. Tjark Ebels2,
  11. Adriaan A Voors1,
  12. Petronella G Pieper1
  1. 1Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
  2. 2Department of Thoracic Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
  3. 3Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands
  4. 4Department of Radiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
  5. 5Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands
  6. 6Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
  7. 7Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
  8. 8Department of Cardiology, St. Antonius Hospital, Nieuwegein, The Netherlands
  9. 9Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
  1. Correspondence to Dr Petronella G Pieper, Department of Cardiology, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands; p.g.pieper{at}umcg.nl

Abstract

Objectives To report the prevalence of aortic valve prosthesis–patient mismatch (PPM) in an adult population with congenital heart disease (CHD) and its impact on exercise capacity. Adults with congenital heart disease (ACHD) with a history of aortic valve replacement may outgrow their prosthesis later in life. However, the prevalence and clinical consequences of aortic PPM in ACHD are presently unknown.

Methods From the national Dutch Congenital Corvitia (CONCOR) registry, we identified 207 ACHD with an aortic valve prosthesis for this cross-sectional cohort study. Severe PPM was defined as an indexed effective orifice area ≤0.65 cm2/m2 and moderate PPM as an indexed orifice area ≤0.85 cm2/m2 measured using echocardiography. Exercise capacity was reported as percentage of predicted exercise capacity (PPEC).

Results Of the 207 patients, 68% was male, 71% had a mechanical prosthesis and mean age at inclusion was 43.9 years ±11.4. The prevalence of PPM was 42%, comprising 23% severe PPM and 19% moderate PPM. Prevalence of PPM was higher in patients with mechanical prostheses (p<0.001). PPM was associated with poorer exercise capacity (mean PPEC 84% vs 92%; p=0.048, mean difference =−8.3%, p=0.047). Mean follow-up was 2.6±1.1 years during which New York Heart Association (NYHA) class remained stable in most patients. PPM showed no significant effect on death or hospitalisation during follow-up (p=0.218).

Conclusions In this study we report a high prevalence (42%) of PPM in ACHD with an aortic valve prosthesis and an independent association of PPM with diminished exercise capacity.

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