trasposition

Great artery transposition, one of the most frequent and severe cyanotic heart malformations, represented the subject of many studies and research up to this moment. Although postnatal period is critical in this pathology, with correct management patients can benefit from complete surgical correction - arterial switch operation with good long term evolution. Prenatal diagnosis of Great Artery Transposition has an important contribution in choosing the appropriate treatment at the right time in postnatal period so that specific complications resulting from delaying the initiation of specific therapies can be avoided...

BACKGROUND: Hepatic artery aneurysms are rare but potentially fatal if undiagnosed or left untreated. Several open surgical and endovascular techniques for hepatic artery aneurysm (HAA) repair have been described. Splenic artery transposition has been reported in selected cases. CASE REPORT: We herein present the case of a 73-year-old man with asymptomatic HAA and concomitant occlusion at the most proximal tract. The aneurysm involved the common and proper hepatic artery and was supplied by the gastroduodenal artery...

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Our aim was to compare two different approaches for segmentation of single ventricle (SV) on cardiac magnetic resonance (CMR) cine images. We retrospectively studied 30 consecutive patients (23 males; aged 27 ± 10 years) with a treated SV who underwent 1.5-T CMR using ECG-triggered axial true-FISP, HASTE and cine true-FISP sequences. We classified patients for visceroatrial situs, cardiac axis orientation, ventricular loop, morphology of SV and position of great arteries. One experienced reader segmented cine images twice, firstly including only the systemic ventricle, secondly including both systemic and accessorial ventricles...

AIM: To analyze the causes and role of right ventricle failure in the morbidity and mortality after arterial switch operation for transposition of the great arteries in neonates. METHOD: Between January 1999 and December 2001, 62 neonates underwent arterial switch operation. The simple transposition group was comprised of 39 patients with transposition of the great arteries and intact ventricular septum. The complex transposition group included 23 patients with large ventricular septal defects, accompanied with left ventricle outflow tract obstruction in 6 cases and dextrocardia in 1 case...

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Chylothorax may be produced by superior vena cava (SVC) obstruction, a recognized complication of the Mustard operation for trasposition of the great arteries. The chylothorax may be reduced by keeping the subject in the upright position. Conservative management is an alternative to repeat operation. This syndrome must be recognized, as it can be confused with congestive heart failure. Severe chylothorax may develop insidiously because of progressive SVC obstruction after the immediate postoperative period.

Sixty six per cent of cases need surgical treatment during the first months of life. The high mortality rate (23 to 40%) in those children which need pulmonary banding or sistemic pulmonary shunts authors believe is due to: 1) The existence of coartation of the aorta in 83% of the cases with trasposition of the great arteries and high pulmonary blood flow. 2) The small diameter of pulmonary arteries in cases with low pulmonary blood flow (smaller than those presenting Fallot's Tetralogy). 3) The association, in 25% of the cases with normally related great arteries, with a subaortic myocardiopathy...