[Brachiocephalic artery-sparing aortic arch repair combined with stent-graft elephant trunk technique for Stanford type A aortic dissection: analysis of 23 cases].

Objective: To assess the clinical outcomes of brachiocephalic artery-sparing aortic arch repair combined with stent-graft elephant trunk technique for treatment of Stanford type A aortic dissection.

Methods: Twenty-three patients with Stanford type A aortic dissection requiring arch replacement underwent brachiocephalic artery-sparing aortic arch repair combined with stent-graft elephant trunk technique. The operations were performed within 72 h (20 cases) or 3-14 days (3 cases) after the onset of aortic dissection.

[Ultrafiltration with different membranes and respiratory function after cardiopulmonary bypass].

Objective: To investigate the protective effect of ultrafiltration on pulmonary function after cardiopulmonary bypass (CPB) by comparing two different membranes used in the ultrafiltration.

Methods: Thirty patients undergoing cardiac surgery with CPB were randomly divided into adsorption group (n=15) and control group (n=15), and in the former group, AN69 membrane was used for ultra-infiltration, with polysulfone (PS) membrane adopted in the control group during CPB. Plateau airway pressure (P(Plateau)), peak airway pressure (P(Peak)), static pulmonary compliance (Cst), dynamic pulmonary compliance (Cdyn) and respiratory index (RI) were measured or calculated before and 5, 60, 120, and 240 min after CPB in each group respectively.