The Guaymas Basin Subseafloor Sedimentary Archaeome Reflects Complex Environmental Histories.

We explore archaeal distributions in sedimentary subseafloor habitats of Guaymas Basin and the adjacent Sonora Margin, located in the Gulf of California, México. Sampling locations include (1) control sediments without hydrothermal or seep influence, (2) Sonora Margin sediments underlying oxygen minimum zone water, (3) compacted, highly reduced sediments from a pressure ridge with numerous seeps at the base of the Sonora Margin, and (4) sediments impacted by hydrothermal circulation at the off-axis Ringvent site. Generally, archaeal communities largely comprise Bathyarchaeal lineages, members of the Hadesarchaea, MBG-D, TMEG, and ANME-1 groups.

Double venous drainage in scimitar syndrome. Ideal anatomy for percutaneous complete cure.

Congenital venolobular or scimitar syndrome is a rare congenital cardiopulmonary anomaly consisting in a partial anomalous pulmonary venous drainage, lung hypoplasia, and anomalous systemic arterial supply to the lung. It can associate with other congenital disorders which will confer the clinical presentation and prognosis of these patients. In most of the cases, the therapeutic approach is partial, as anatomy allows only aberrant arterial embolisation.

Complex aortic coarctation and PHACE syndrome.

In PHACE syndrome, the acronym PHACE stands for the association of posterior fossa malformations, cervicofacial hemangiomas, arterial anomalies, coarctation and eye anomalies. We report our findings in four patients with this syndrome, in whom it was characterized by complex aortic coarctation that required not only preoperative echocardiographic investigation, but also the use of techniques such as magnetic resonance imaging and angiography. Surgical treatment was also complex.

Use of angioembolization as an effective technique for the management of pediatric solid tumors.

Purpose: In oncology practice, angioembolization has been reported for tumor reduction before surgery, treatment of life-threatening conditions, and for palliative care. Nevertheless, the overall experience with angioembolization for the treatment of tumors is limited. We report our experience in 7 nonvascular solid pediatric tumors.

Percutaneous treatment of atrial septal defects, muscular ventricular septal defects and patent ductus arteriosus in infants under one year of age.

Amplatzer devices are used for the percutaneous closure of ostium secundum atrial septal defects, muscular ventricular septal defects and patent ductus arteriosus. However, very little experience has been gained in using these devices in infants under 1 year of age. Between January 2001 and January 2008, 22 symptomatic infants aged under 1 year underwent percutaneous treatment: three had an ostium secundum atrial septal defect, 15 had patent ductus arteriosus, and four had a muscular ventricular septal defect.

Device migration in hybrid technique for apical muscular ventricular septal defects closure.

Muscular ventricular septal defects still require complex surgical procedures for their repair. We have used a hybrid approach for closure of these ventricular septal defects in patients needing open-heart surgery. It consists of the deployment of a ventricular septal occluder, as used in transcatheter procedures inside the defect under direct vision after cardiopulmonary bypass establishment.

[Aortic origin of the left pulmonary artery in an infant with Fallot's tetralogy].

We report the case of a male neonate who had a prenatal diagnosis of Fallot's tetralogy. He presented with respiratory distress during the second week of life. Chest x-ray showed an enlarged right ventricle and pulmonary edema.

[Ductus arteriosus patency with stenting in critical pulmonary stenosis and pulmonary atresia with intact interventricular septum].

We report our experience with stenting of the ductus arteriosus in three neonates. Two patients had pulmonary atresia with an intact interventricular septum and one had critical pulmonary stenosis. Radiofrequency ablation was used to open the atretic pulmonary valve in two patients.

[Percutaneous closure of ventricular septal defect with an Amplatzer device].

We present a series of 4 patients in whom a ventricular septal defect (VSD) was closed with an Amplatzer muscular VSD device during cardiac catheterization. In one patient with type I truncus arteriosus and subarterial VSD, closure of a wide apical defect was done to allow further surgical correction while avoiding left ventricular ventriculotomy. The second patient had congenitally corrected transposition of the great arteries with complete A-V block and a pacemaker implanted from birth.

Radiofrequency catheter ablation of an incessant supraventricular tachycardia in a premature neonate.

A 32-week, premature neonate with incessant supraventricular tachycardia and hemodynamic compromise who failed to respond to antenatal and postnatal antiarrhythmic therapy underwent successful radiofrequency catheter ablation (RCA) of a concealed left free-wall accessory pathway when the infant was 4-days-old and weighed only 1,840 grams. At follow-up performed 60 days after the procedure, the infant remained free of any drug, in sinus rhythm, and in normal hemodynamic condition.