Why the study?
Does cold crystalloid cardioplegic arrest compared to intermittent ischaemic arrest affect the incidence of postoperative conduction disturbances in patients undergoing coronary artery bypass grafting?
Does cold crystalloid cardioplegic arrest compared to intermittent ischaemic arrest affect the incidence of postoperative conduction disturbances in patients undergoing coronary artery bypass grafting?
Cold crystalloid cardioplegia with moderate hypothermia is associated with a higher incidence of postoperative conduction disturbances compared to intermittent ischemic arrest with mild hypothermia during CABG.
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Associated with higher conduction defects after CABG; hypothesis-generating and should not yet change practice.
Two-hundred patients undergoing coronary artery bypass grafting were analysed to assess the incidence of new and persistent conduction disturbances in the postoperative period. Two groups, each of 100 patients, were studied. One group underwent surgery during cold crystalloid cardioplegic arrest with moderate whole-body hypothermia (28 degrees C). The second group was subjected to intermittent ischaemic arrest with mild whole-body hypothermia (32 degrees C). The incidence of postoperative conduction defects was significantly higher in the cardioplegic group.
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Pattison et al. (1991) studied this question.
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