BACKGROUND: In dextro-transposition of the great arteries (dTGA), the aorta and the pulmonary artery are transposed in position, when aorta arises from the right ventricle and pulmonary artery arises from the left ventricle. The present study was designed to assess three-dimensional speckle-tracking echocardiography-derived tricuspid annular (TA) abnormalities in adult patients with dTGA late after atrial switch operations. It was also examined whether differences in TA morphology and function exist between Senning- and Mustard-procedures. METHODS: The study consisted of 14 adult dTGA patients (mean age: 29.9±8.3 years, 6 males), who underwent Mustard-procedure (n=7) at the age of 1.57±0.53 years or Senning-procedure (n=7) at the age of 1.42±0.53 years. Their results were compared to 28 age- and gender-matched healthy subjects (30.3±4.9 years, 14 males). RESULTS: Dilated end-systolic and end-diastolic TA diameters, areas and perimeters could be detected in dTGA patients as compared to those of controls. TA functional properties calculated from TA diameter (TAFS) and area (TAFAC) data proved to be deteriorated in dTGA patients. No differences could be detected either in TA dimensions, or in TA functional properties between Senning- and Mustard-operated dTGA patients. TA plane systolic excursion (TAPSE) was reduced, which did not correlate with TAFAC and TAFS in dTGA patients. CONCLUSIONS: In dTGA, dilated end-systolic and end-diastolic TA is accompanied with deteriorated TA functional properties regardless of which atrial switch procedure was performed. Correlations between TAPSE representing longitudinal movement of the TA and TAFAC and TAFS representing sphincter-like movement of the TA disappeared, which could partially explain accompanying tricuspid functional regurgitations. KEYWORDS: Tricuspid annulus; function; three-dimensional echocardiography; speckle-tracking; transposition of the great arteries. 2021 Cardiovascular Diagnosis and Therapy. All rights reserved.
BACKGROUND: In dextro-transposition of the great arteries (dTGA), the aorta and the pulmonary artery are transposed in position, when aorta arises from the right ventricle and pulmonary artery arises from the left ventricle. The present study was designed to assess three-dimensional speckle-tracking echocardiography-derived tricuspid annular (TA) abnormalities in adult patients with dTGA late after atrial switch operations. It was also examined whether differences in TA morphology and function exist between Senning- and Mustard-procedures. METHODS: The study consisted of 14 adult dTGA patients (mean age: 29.9±8.3 years, 6 males), who underwent Mustard-procedure (n=7) at the age of 1.57±0.53 years or Senning-procedure (n=7) at the age of 1.42±0.53 years. Their results were compared to 28 age- and gender-matched healthy subjects (30.3±4.9 years, 14 males). RESULTS: Dilated end-systolic and end-diastolic TA diameters, areas and perimeters could be detected in dTGA patients as compared to those of controls. TA functional properties calculated from TA diameter (TAFS) and area (TAFAC) data proved to be deteriorated in dTGA patients. No differences could be detected either in TA dimensions, or in TA functional properties between Senning- and Mustard-operated dTGA patients. TA plane systolic excursion (TAPSE) was reduced, which did not correlate with TAFAC and TAFS in dTGA patients. CONCLUSIONS: In dTGA, dilated end-systolic and end-diastolic TA is accompanied with deteriorated TA functional properties regardless of which atrial switch procedure was performed. Correlations between TAPSE representing longitudinal movement of the TA and TAFAC and TAFS representing sphincter-like movement of the TA disappeared, which could partially explain accompanying tricuspid functional regurgitations. KEYWORDS: Tricuspid annulus; function; three-dimensional echocardiography; speckle-tracking; transposition of the great arteries. 2021 Cardiovascular Diagnosis and Therapy. All rights reserved.
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