Anurag Sharma | PubMed Health

PubMed2003

Delayed embolization of Amplatzer septal occluder device: an unknown entity--a case report.

A case of delayed embolization of Amplatzer septal occluder, occurring at 2 weeks postimplantation in a 10-year-old girl with an oval-shaped secundum atrial septal defect is reported. The structurally intact device dislodged into the left atrium owing to reversal of transatrial pressure gradients and embolized to the left ventricular outflow tract from where it was retrieved surgically.

Balloon Occlusion↗

PubMed2002

Microbial activity at gigapascal pressures.

We observed physiological and metabolic activity of Shewanella oneidensis strain MR1 and Escherichia coli strain MG1655 at pressures of 68 to 1680 megapascals (MPa) in diamond anvil cells. We measured biological formate oxidation at high pressures (68 to 1060 MPa). At pressures of 1200 to 1600 MPa, living bacteria resided in fluid inclusions in ice-VI crystals and continued to be viable upon subsequent release to ambient pressures (0.1 MPa). Evidence of microbial viability and activity at these extreme pressures expands by an order of magnitude the range of conditions representing the habitable zone in the solar system.

Adaptation, Physiological↗