Ductal stenting retrains the left ventricle in transposition of great arteries with intact ventricular septum  Kothandam Sivakumar, MD, DM, Edwin Francis,

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Ductal stenting retrains the left ventricle in transposition of great arteries with intact ventricular septum  Kothandam Sivakumar, MD, DM, Edwin Francis, MD, DM, Prasad Krishnan, MS, MCh, Jagdish Shahani, MD  The Journal of Thoracic and Cardiovascular Surgery  Volume 132, Issue 5, Pages 1081-1086 (November 2006) DOI: 10.1016/j.jtcvs.2006.07.014 Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Lateral view aortogram shows ductal ampulla as a hump from the anterior wall of the aorta. Inset shows a guidewire advanced through the ductal ampulla into the pulmonary artery by recanalizing the closed ductus arteriosus and a short coronary stent positioned at the ductal level. On the right, after ductal stenting with a 4-mm balloon, aortic injection shows a good filling of the pulmonary arteries. Ao, Aorta; PA, pulmonary artery; PDA, patent ductus arteriosus. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1081-1086DOI: (10.1016/j.jtcvs.2006.07.014) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Apical 4-chamber echocardiographic view before and after ductal stenting. Before ductal stenting shown on the left, the regressed left ventricle has a banana shape, the interventricular septum bows into the left ventricle, and the left ventricular volumes are smaller than in the postductal stenting picture on the right. LA, Left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle; PDA, patent ductus arteriosus. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1081-1086DOI: (10.1016/j.jtcvs.2006.07.014) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Parasternal short-axis echocardiographic view before ductal stenting on left shows that the left ventricular cavity has a crescent-shaped squashed appearance due to shifting of the interventriuclar septum to the left; after ductal stenting, shown on right, the left ventricle regains its normal shape. Increase of the left ventricular free wall thickness and mass after ductal stenting are also shown in the values. LV, Left ventricle; RV, right ventricle. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1081-1086DOI: (10.1016/j.jtcvs.2006.07.014) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Parasternal long-axis echocardiogram shows improvement in left ventricular volumes and left ventricular free-wall thickness after ductal stenting (right) compared with before stenting (left). Ao, Aorta; LA, left atrium; LV, left ventricle; PA, pulmonary artery; RV, right ventricle; PDA, patent ductus arteriosus. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1081-1086DOI: (10.1016/j.jtcvs.2006.07.014) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Pulse wave Doppler tracing across the stented duct shows low-velocity continuous flows from aorta to pulmonary artery, indicating that the pulmonary artery pressures are almost similar to aortic pressures. This proves that the ductal stent offers significant pressure overload to the left ventricle, to result in left ventricular retraining. PDA, Patent ductus arteriosus; ECG, electrocardiogram. The Journal of Thoracic and Cardiovascular Surgery 2006 132, 1081-1086DOI: (10.1016/j.jtcvs.2006.07.014) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions