Abnormal biventricular performance in asymptomatic adolescents late after repaired Tetralogy of Fallot: Combined two‐dimensional speckle tracking and three‐dimensional echocardiography study

Background: The aim of this prospective study was to assess biventricular performance in asymptomatic adolescents with repaired tetralogy of Fallot (TOF) using 2D speckle tracking and real time 3D echocardiography simultaneously. Methods: We studied 31 patients with repaired TOF (M/F: 22/9, age: 16.1 ± 6.1 yrs) who had history of cardiac surgery with mean follow‐up duration of 12.8 years, and 32 age‐ and sex‐matched normal individuals (M/F: 23/9, age: 16.6 ± 5.1 yrs). All subjects underwent speckle tracking and 3D echocardiography, electrocardiogram, treadmill, and blood sampling for measurement of brain natriuretic peptide (BNP). Results: Compared to the control group, the TOF group had higher BNP level (31.8 ± 21.4 vs 14.1 ± 12.4 pg/ml, p < 0.01), lower peak oxygen consumption (8.4 ± 1.7 vs 9.9 ± 1.6 ml/kg/min, p < 0.05), and longer QRS duration (126 ± 30 vs 82 ± 9 ms, p < 0.01). Patients with repaired TOF had significantly impaired right ventricle (RV) global and all six regional longitudinal strain and strain rate than normal controls. Left ventricle (LV) global and mainly apical regional longitudinal strain and strain rate were reduced in patients with repaired TOF. There was a significant correlation of global longitudinal strain (r = 0.456, p = 0.01) and global time to peak longitudinal strain (r = 0.484, p < 0.01) between LV and RV in patients with repaired TOF. In terms of 3D echo cardiographic volume data, patients with repaired TOF had lower LV stroke volume index (p < 0.05), but higher RV end diastolic volume index (p < 0.01), RV end systolic volume index (p < 0.01), RV stroke volume index (p < 0.01), and pulmonary regurgitation fraction (p < 0.01) than normal controls. Conclusion: Our results suggest asymptomatic adolescents with repaired TOF had abnormal biventricular myocardial performance, as demonstrated by combined 2D speckle‐tracking and 3D echocardiography. The implications of these findings for management of adolescents late after repaired TOF remain to be determined.

• Publication year

  2017

• Venue

  Journal of the Chinese Medical Association

• Publication date

  2017-11-01

• Fields of study

  Medicine

• Identifiers
  DOI 10.1016/j.jcma.2017.09.012PMID 29191613
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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