نتایج جستجو برای: cpb
تعداد نتایج: 2644 فیلتر نتایج به سال:
In 20 patients (6 male; age 56.5+/-6.4 years; BSA 1.6+/-0.1 m(2)) undergoing port-access mitral valve surgery, automated intraoperative transcranial Doppler was used to monitor absolute amount, side distribution, and type of embolic events during selected phases of the procedure to evaluate the impact of specific surgical manoeuvres on cerebral microembolism. The rate of events per minute was a...
OBJECTIVE The nadir hematocrit (HCT) on cardiopulmonary bypass (CPB) is a recognized independent risk factor for major morbidity and mortality in cardiac surgery. The main interpretation is that low levels of HCT on CPB result in a poor oxygen delivery and dysoxia of end organs. Hyperlactatemia (HL) is a marker of dysoxic metabolism, and is associated with bad outcomes in cardiac surgery. This ...
Matrix metalloproteinases (MMPs) are a family of enzymes responsible for degrading the extracellular matrix, a process that likely contributes to the development of altered vascular permeability. Past studies in patients undergoing cardiopulmonary bypass (CPB) have documented increased levels of MMPs with CPB. The purpose of this study was to evaluate the effect of leukocyte reduction on MMP re...
OBJECTIVE To determine whether central periodic breathing (CPB) is associated with acute involvement of any particular part of the brain, or the extent of total damage in patients with acute stroke. METHODS CPB was identified using portable monitoring equipment in patients with stroke on admission. A neuroradiologist classified acute stroke lesions and prior cerebrovascular disease on brain i...
Calcium phosphate bions (CPB) are biomimetic mineralo-organic nanoparticles which represent a physiological mechanism regulating the function, transport and disposal of calcium and phosphorus in the human body. We hypothesised that CPB may be pathogenic entities and even a cause of cardiovascular calcification. Here we revealed that CPB isolated from calcified atherosclerotic plaques and artifi...
The combined mine backfill–geothermal (CMBG) system can be used to effectively extract geothermal energy by installing a heat exchange tube (HET) in the underground backfilled stopes of mines, which as supply for buildings mines and surrounding areas. efficient performance this strongly depends on thermal process between HET its cemented paste backfill body (CPB). In study, validated simulation...
Blood trauma may be lower with centrifugal pumps (CPs) than with roller pumps (RPs) during cardiopulmonary bypass (CPB), because, unlike RPs, CPs do not compress the tubing, and shear stress is considered lower in CPs than in RPs. However, relative platelet function remains unclear. Using multiple electrode aggregometry (MEA), we compared platelet function with CP and RP. Ten swine underwent CP...
Recently, Boisclair et all has given us an important clue to show the main trigger to coagulation activity during cardiopulmonary bypass (CPB). They observed the increase of factor IX activation peptide during CPB, which shows a strong correlation with the increase of prothrombin fragment F1 + 2. In contrast, they found no significant increase in factor XIIa levels during CPB. This activation p...
BACKGROUND Mitochondrial DNA (mtDNA) was reported as a pro-inflammatory agent. In our previous study, elevation of plasma mtDNA was revealed after cardiac surgery with cardiopulmonary bypass (CPB). Platelets were activated during the cardiac surgery and recent study revealed its ability to release mtDNA. Our present study postulated that the elevated plasma mtDNA comes from activated platelets,...
Bleeding after CPB has been difficult to characterize and its treatment equally difficult to standardize. The complexity of this problem is related to the hemostatic process, the technical variations in the operative procedures, and the many uncontrolled variables associated with CPB, including the effects of anesthetic or pharmacologic agents, the nature of the priming solution, hemodilution, ...
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