BACKGROUND Coronary artery bypass surgery can be performed without (Off-Pump) or with cardiopulmonary bypass (On-Pump). Extracorporeal circulation and cardioplegic arrest may cause alterations in the plasma metabolome. We assessed metabolomic changes in patients undergoing On-Pump or Off-Pump coronary artery bypass surgery. METHODS We assessed five analyte classes (41 acylcarnitines, 14 amino...

Patients with acute kidney failure (AKF) and chronic kidney failure (CKF) require an appropriate vascular access for hemodialysis [1]. Vascular access is needed to allow blood flow through an extracorporeal circulation system with a blood pump connected to a hemodialysis monitor driving the blood through a dialysis filter (dialysator). Satisfactory levels of blood flow range between 300 and 400...

For complex drilling operations with narrow geo-pressure windows, it is not uncommon to have problems with formation fracturing, due to erroneous mud pump management. To assist the driller in managing the circulation, it is possible to limit both the acceleration of the mud pumps whilst changing the flow-rate as well as the actual flow-rate, to avoid generating downhole pressure above the fract...

This article deals with the degrees of freedom and possible optimums, specifically energy optimums heat pump heating system. The authors developed an multi objective optimization procedure that allows for determination optimal motor power circulation well pumps in order to achieve maximum COP. Upon selecting type size water-to-water pump, based on demand buildings, proper must be determined. Th...

Definition: A complication of monozygotic twin pregnancies in which one fetus develops normally (pump twin) and the second twin (recipient twin) demonstrates cardiac mal development ranging from complete absence of heart tissue to some formation of rudimentary myocardia. Etiology: Probable reversal of circulation in the anomalous twin resulting from anastomosis of circulation between the twins ...

In contrast to conventional on-pump coronary artery bypass grafting only mild increase of parameters of oxidative stress is reported during and after off-pump coronary artery bypass grafting. In an attempt to reduce the side effects of extra corporeal circulation the mini- extra corporeal circulation concept was introduced. In this study peroperative oxidative stress biomarkers were compared us...

Knowledge about the effects of cardiopulmonary bypass on malarial patients is scant. Malaria-induced hemolysis can exercerbate by performing extracorporeal circulation on a patient infected with Plasmodium and may, therefore, lead to a critical hemolysis jeopardizing the clinical outcome. A 52-year-old patient suffering from malaria and endocarditis was scheduled for urgent aortic valve replace...

new procedure being described which involves deliberately preventing blood from passing through the chambers and valves of the heart. In some of these operations, when considerable time is required for their completion, a partial solution has been found in the employment of by-pass techniques. These methods demand extensive vascular surgery to connect the apparatus to the patient, and large vol...

Coronary arterial involvement in Takayasu arteritis (TA) is not uncommon. Herein, we describe a case of TA with celiac trunk and superior mesenteric artery occlusion combined with coronary artery disease. Bilateral huge internal thoracic arteries (ITAs) and the inferior mesenteric artery provided the major visceral collateral circulation. After percutaneous intervention to the right coronary ar...