New Methods Of Cannulation And Decannulation For Experimental Ventricular Assistance

Background : Mechanical ventricular assistance is a temporary effective therapy for patients with severe low output syndrome after open heart surgery. The majority of research demonstrated that, in left, right or biventricular assistance, prompt installation is of most importance in enhancing survival. However, correct decision is affected by a lot of factors. If cardiac surgeons' worries on repeat sternotomy for decannulation was appropriately resolved, the ventricular assisted circulation may get better results. According to the "minimally invasive" concept, we created one simple method about knotting through the small incision to the deeper place in vivo with the design of "minimally invasive" decannulation.Methods: By means of the centrifugal pumps, three special techniques on the basis of above the method and a series of animal experiments, four new modals of cannulation and decannulation for left, right or biventricular assistance were established: (1). modified Dennis cannulation with atrial septal incision closed after decannulation in left ventricular assistance; (2). left atrial appendage cannulation with "minimally invasive" decannulation for left ventricular assistance; (3). main pulmonary arterial cannulation with "minimally invasive"...