1) The different modes of assisted or controlled circulation have been con· sidered for an intractable cardiac failure. The authors advocated the following classification that may be useful for the hemodynamic study of assisted circulation. A) The partial bypass technique: ( 1) veno-arteiral pumping, (2) right ventricular partial bypass, ( 3) left ventricular partial bypass, and (4) partial car...

In this paper we consider the problem of the longest common parameterized subsequence with fixed common substring (STR-IC-LCPS). In particular, we show that STR-IC-LCPS is NP-complete. We describe an approach to solve STR-IC-LCPS. This approach is based on an explicit reduction from the problem to the satisfiability problem.

OBJECTIVE To compare cardiac troponin T release and lactate metabolism in coronary sinus and arterial blood during uncomplicated coronary grafting on the beating heart with conventional coronary grafting using cardiopulmonary bypass. DESIGN A prospective observational study with simultaneous sampling of coronary sinus and arterial blood: before and 1, 4, 10, and 20 minutes after reperfusion f...

Intimal hyperplasia (IH), which causes occlusion of arterial bypass grafts and arteriovenous (A-V) shunts, develops preferentially in low wall shear, or stagnation, regions. Arterial geometry is commonly three-dimensional, generating swirling flows, the characteristics of which include in-plane mixing and inhibition of stagnation. Clinical arterial bypass grafts are commonly two-dimensional, fa...

BACKGROUND AND PURPOSE Microemboli have been implicated in the etiology of neuropsychological deficits after cardiopulmonary bypass. This study examined the incidence of high-intensity transcranial signals (microemboli) and their relation to changes in neuropsychological performance after surgery. METHODS Transcranial Doppler ultrasonography was used to measure middle cerebral artery blood fl...

INTRODUCTION Cardiopulmonary bypass causes a series of inflammatory events that have adverse effects on the outcome. The release of cytokines, including interleukins, plays a key role in the pathophysiology of the process. Simultaneously, cessation of ventilation and pulmonary blood flow contribute to ischaemia-reperfusion injury in the lungs when reperfusion is maintained. Collapse of the lung...

Microemboli passing to the cerebral circulation during cardiopulmonary bypass can contribute to postoperative neurologic dysfunction. Many studies conclude that air microbubbles predominantly are responsible for this problem. A dynamic bubble trap (DBT) was developed to diminish the number of microbubbles in the arterial line of extracorporeal circulation. The DBT is able to substantially reduc...

The positioning of the internal thoracic artery extra-pleural and perihilar in coronary artery bypass grafting to avoiding anterior adherences and prevent unnecessary damage arterial.

as the major hazard of percutaneous vertebroplasty (pv), cement extravasation into the venous system, systemic embolism, and spinal canal has been previously reported. however, to our knowledge, only one case of the arterial migration of cement has been previously reported that is directly associated with this technique without any symptom in the immediate post- intervention and in the follow-u...