BACKGROUND Cardioplegic arrest (CP) followed by reperfusion after cardiopulmonary bypass induces coronary microvascular dysfunction. We investigated the role of calcium-activated potassium (K(Ca)) channels in this dysfunction in the human coronary microvasculature. METHODS AND RESULTS Human atrial tissue was harvested before CP from a nonischemic segment and after CP from an atrial segment ex...

conclusions no significant difference in reducing post bypass inflammation between preoperative steroid treatment and combined preoperative and intraoperative steroid administration reported and they had the same effects. results in both groups, no significant difference with variation of expression for il-6 (inflammatory factor) and il-10 (anti-inflammatory factor) in different times after byp...

introduction: as off pump coronary artery bypass grafting surgery (cabg) is a developing method in coronary cardiac surgery, most surgeons are anxious about the danger of emergency crash conversion. in this observational study we tried to show the rate and outcome of conversion . material and methods: in this descriptive study about 477 coronary off-pump cabg patients were operated in ghaem hos...

Low-dimensional k-ary n-cubes have been popular in recent multicomputers. These networks, however, suffer from high switching delays due to their high message distance. To overcome this problem, Dally has proposed a variation, called express k-ary n-cubes, with express channels that allow non-local messages to partially bypass clusters of nodes within a dimension. K-ary n-cubes are graph topolo...

conclusions: in the present study, applying positive airway pressure methods (cpap or imv) during cpb was associated with better postoperative abg measurements and (a-a) do2. results: the demographic data were similar in between three groups. graft number, pump time and preoperative abgs were not significantly different. postoperative pao2 were significantly higher in the cpap and imv groups an...

Network covert channels are policy-breaking and stealthy communication channels in computer networks. These channels can be used to bypass Internet censorship, to exfiltrate data without raising attention, to allow a safe and stealthy communication for members of political oppositions and for spies, to hide the communication of military units at the battlefield from the enemy, and to provide st...

BACKGROUND ATP-sensitive K+ channels are activated when the myocardium becomes ischemic. However, the role of the ATP-sensitive K+ current in the emergence of ECG ST changes during ischemia remained unclarified. METHODS AND RESULTS The left anterior descending coronary artery (LAD) was cannulated and perfused with arterial blood from the carotid artery through a bypass tube in 8 anesthetized,...

A long-standing problem in the understanding of deep-water turbidite reservoirs relates to how three-dimensional evolution channel systems evolve response filling on spatiotemporal scales, and depositional environments affect architecture. The 3-D structure temporal late Miocene complexes southern Taranaki Basin, New Zealand is investigated, geometry, distribution, stacking patterns are analyze...

(TMR) is a form of revascularization technique in which small channels are created between the ischemic myocardium and the left ventricular cavity. The therapeutic value of this technique is derived from studies of reptilian hearts in which blood is delivered to heart muscle via a network of channels directly from the left ventricle. This is supported by findings of Wearn and colleagues. They d...

A substantial number of patients present with medically refractory angina who are not candidates for angioplasty or bypass surgery. The creation of channels between the myocardium and the ventricular blood pool has been performed after thoracotomy with excellent relief of symptoms but has been associated with high perioperative mortality. We investigated the safety of a nonoperative, percutaneo...