BACKGROUND The hemodynamics characteristics of the hybrid Norwood (HN) procedure differ from those of the conventional Norwood and are not fully understood. We present a multiscale model of HN circulation to understand local hemodynamics and effects of aortic arch stenosis and a reverse Blalock-Taussig shunt (RBTS) on coronary and carotid perfusion. METHODS Four 3-dimensional models of four H...

The Terumo Baby-RX, a new-generation low prime oxygenator, recently has entered the perfusion market in North America. This oxygenator is designed exclusively for neonates and infants and has the smallest priming volume of any clinically available oxygenator. The BABY-RX also is treated with X Coating, Terumo's biocompatible, hydrophilic polymer surface coating that reduces platelet adhesion an...

BACKGROUND Aortopulmonary collaterals (APCs) have been associated with increased morbidity after the Fontan operation. We aimed to quantify APC flow after bidirectional cavopulmonary connections and Fontan completions, using phase-contrast MRI, and to identify risk factors for the development of APCs. METHODS AND RESULTS APC blood flow was quantifiable in 24 of 36 retrospectively analyzed MRI...

CONGENITAL cardiac defects involving the venous return to the heart and those affecting the partitioning of the atria should probably be considered as a group. The most commonly encountered and simplest to correct are defects in the interatrial septum of the ostium secundum type. Due to the lower resistance to emptying into the right ventricle from the two communicating atria, the shunt in such...

Functionally single ventricle (f-SV) is susceptible to volume overload. Atrioventricular valve regurgitation (AVVR) tends to develop and ventricular function deteriorates due to excessive pulmonary blood flow following modified Blalock-Taussig shunt (mBTS). On the other hand, a small caliber graft has risks of early obstruction and poor growth of pulmonary vascular beds. We assessed the effect ...

Formalin infiltration of the ductus arteriosus was performed in 13 neonates with pulmonary atresia (three with ventricular septal defect, two with tricuspid atresia, and eight with intact ventricular septum, one of whom had Ebstein's anomaly) in an attempt to maintain duct patency. Nine patients had an additional retrograde pulmonary valvotomy and one a Blalock-Taussig shunt. The mean preoperat...

Among 74 survivors of the Fontan type of operation abnormal cardiac signs were detected in 46 (62%) at postoperative examination. The findings were analysed in relation to the state of the cardiovascular system of these patients. Cyanosis was present in 10 (13.5%) patients. The causes of cyanosis included residual interatrial shunt (six patients), acquired pulmonary arteriovenous fistulas (thre...

INTRODUCTION In resource-poor settings, the modified Blalock-Taussig shunt (MBTS) is often performed for symptomatic relief of Fallot's tetralogy. From September 2011, we adopted the strictly posterior thoracotomy (SPOT), a minimal-access technique for the MBTS and report the cosmetic advantages in this communication. METHODS We retrospectively analyzed the records of consecutive patients in ...

DESCRIPTION A premature newborn weighing 1.9 kg, presenting with cyanosis, feeding and respiratory difficulties was admitted to our centre for further evaluation. An initial echocardiogram suggested a pulmonary atresia with a malalignment infundibular ventricle septum defect with atypical right-sided ductus arteriosus (2.4 mm) arising from the aberrant right subclavian artery (4 mm), which was ...

13. Dyer AR, Stamler J, Shekelle RB, Schoenberger J: The relationship of education to blood pressure. Circulation 54: 987, 1976 14. Becker M (ed): The health belief model and personal health behavior. Health Educ Monogr 2: 236, 1974 15. Baric L: Recognition of the "at risk" role: a means to influence health behavior. Int J Health Educ 12: 24, 1969 16. American Heart Association Long Range Plan,...