Publications by authors named "Paul O'Gara"

Background And Aim: This study sought to determine whether the favorable anti-inflammatory effects of aprotinin might limit ischemic damage during the revascularization of ischemic myocardium.

Methods: Twenty pigs underwent 90 minutes of coronary occlusion followed by 45 minutes of blood cardioplegic arrest and 180 minutes of reperfusion. Ten animals received a loading dose of aprotinin (40,000 kallikrein inhibiting units/kg) during the start of coronary occlusion followed by an infusion of 20,000 kallikrein inhibiting units/kg/hour.

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Several of the manufacturers of cardiopulmonary bypass equipment have recently introduced new miniature cardiopulmonary bypass systems. New advancements in cardiopulmonary bypass technology are almost always of interest to the perfusion community. However, the question arises, what advantages do these systems offer over our present technology? The manufacturers claim that these new systems will add to our perfusion armamentarium by offering us an opportunity to further reduce priming volume and the surface area to which the blood is exposed.

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The systemic inflammatory response syndrome (SIRS) is a well-recognized phenomenon attending cardiopulmonary bypass (CPB) surgery. SIRS leads to costly complications and several strategies intended to ameliorate the symptoms have been studied, including leukocyte reduction using filtration. Although the body of work suggests that leukoreduction attenuates SIRS, discrepancies remain within the literature.

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The deleterious effects of cardiotomy suction have been well recognized and well documented for some time. The use of cardiotomy suction results in the exposure of blood to the defoaming sock, aspiration of stagnant pericardial blood into the systemic circulation, and the entrainment of both fatty and gaseous microemboli. The purpose of this paper is to describe a technique using heparin-bonded cardiopulmonary circuits (HBCs) without the use of a cardiotomy reservoir or cardiotomy suction.

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Coronary artery bypass grafting (CABG) without cardiopulmonary bypass (CPB), or off pump, has gained popularity by avoiding the postoperative morbidity related to the use of CPB. Previously, we have demonstrated that CABG done on pump using heparin-bonded cardiopulmonary bypass circuits (HBC) with a lower anti-coagulation protocol (LAP) attenuates these effects, reduces homologous blood product requirement, and improves clinical outcome when compared with conventional CPB circuits. Our purpose in this study was to compare off-pump CABG clinical outcomes to on-pump CABG using HBC with LAP.

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