title: Biventricular performance in patients with marfan syndrome without significant valvular disease: comparison to normal subjects and longitudinal follow-up.
abstract: BACKGROUND
  The presence and progressive nature of primary myocardial involvement in Marfan syndrome are debated. The aim of this study was to evaluate the clinical relevance of left ventricular (LV) and right ventricular (RV) strain in adult patients with Marfan syndrome without significant valvular disease.
  
  
  METHODS
  Adult patients with Marfan syndrome (n = 50; mean age, 35.2 ± 12.9 years) were followed prospectively. Echocardiography was performed annually and consisted of comprehensive assessment of ventricular and valvular function. Using speckle-tracking imaging, the baseline strain values of the Marfan population were calculated and compared with the values of normal controls. The follow-up evaluations were used to assess changes in ventricular strain. The association between the incidence of adverse events (heart failure, [supra]ventricular arrhythmias, and proximal aorta surgery) and baseline strain values was investigated.
  
  
  RESULTS
  Compared with controls, patients with Marfan syndrome had significantly lower peak longitudinal LV strain (-18.9 ± 2.3% vs -20.1 ± 1.9%, P < .01) and RV strain (±26.9 ± 5.2% vs ±29.3 ± 4.25%, P < .01). The absolute changes in LV longitudinal, radial, and circumferential strain and RV longitudinal strain during a median 4 years of follow-up were 0.1 ± 2.8%, 1.12 ± 7.6%, 0.3 ± 3.7%, and 0.9 ± 5.5%, respectively, which was not statistically significant. Cox regression demonstrated that reduced LV or RV strain was not associated with adverse outcome (supraventricular arrhythmias, n = 3; proximal aorta surgery, n = 4).
  
  
  CONCLUSIONS
  This study suggests that patients with Marfan syndrome show lower ventricular strain and strain rate values compared with healthy controls. However, no relevant changes in LV and RV function occurred during midterm follow-up in patients with Marfan syndrome without valvular disease at baseline. Although ventricular strain and strain rate were mildly reduced in patients with Marfan syndrome, this did not affect outcomes negatively in the present study.
authors: Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
authors: Roderick W C
authors: RW
authors: Scherptong
authors: Hubert W
authors: HW
authors: Vliegen
authors: Ernst E
authors: EE
authors: van der Wall
authors: Yvonne
authors: Y
authors: Hilhorst-Hofstee
authors: Jeroen J
authors: JJ
authors: Bax
authors: Arthur J
authors: AJ
authors: Scholte
authors: Victoria
authors: V
authors: Delgado
mesh_terms: D000328:Adult; D004452:Echocardiography; D054459:Elasticity Imaging Techniques; D005260:Female; D006349:Heart Valve Diseases / Q000150:complications / Q000000981:diagnostic imaging; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008382:Marfan Syndrome / Q000150:complications* / Q000000981:diagnostic imaging*; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D018754:Ventricular Dysfunction / Q000150:complications* / Q000000981:diagnostic imaging*