SynCardia TAH-t Instructions for Use
SynCardia Systems, Inc.
Page 11
ventricle, approximately 4 to 5cm medial to the left ventricle conduit so
that no necrosis between the two exit sites will result.
•
Enlarge pathway by opening the clamp and inserting a 1-inch Penrose
drain through the pathway. Place the end of the conduit in the Penrose
drain and advance approximately 8-10 cm. Pull Penrose drains through
the pathway that delivers the driveline conduit. Position the artificial
ventricles lateral to the wound and cover with a towel while the rest of
the procedure takes place. This provides ample opportunity for small
bleeders in the driveline pathway to clot.
7.3
Removal of the Native Ventricles
•
Cannulation of the aorta and both superior and inferior vena cava is
done in a standard fashion. Umbilical tape chokers are used on the
cavae. Dissection around the aorta and pulmonary artery is limited to
the proximal portion of the aorta in anticipation of transplantation, thus
leaving some untouched areas that will not be very fibrotic.
Cardiopulmonary bypass is instituted and the heart is fibrillated. Total
bypass is instituted by pulling on the choker tapes.
•
The heart is fibrillated and excision of the heart begun. The excision is
different from that used for transplantation. It seeks to preserve the
annulus of both the tricuspid and mitral valves. Thus, an incision is
made on the ventricular side of the AV groove of the right ventricle
(Figure 2).
Figure 2: First Incision of Ventricle Excision
