Factors associated with activated clotting time following heparin administration in pediatric cardiopulmonary bypass: A retrospective study.

Introduction: The recently recommended activated clotting time (ACT) to be maintained at the initiation of and during cardiopulmonary bypass (CPB) is ≥480 s. However, the post-unfractionated heparin (UFH) administration ACT occasionally does not exceed 480 s. Therefore, in this study, we retrospectively evaluated the factors influencing post-heparin administration ACT before initiating CPB.

Electromagnetic interference of implantable unipolar cardiac pacemakers by an induction oven.

Induction ovens have been reported to exert electromagnetic interference on implanted cardiac pacemakers. In an attempt to quantitatively investigate the electromagnetic interference caused by an induction oven on implantable unipolar cardiac pacemakers, we measured the distribution profile of the magnetic field intensity, both with and without a pan on the induction oven. We also performed the inhibition test and asynchronous test using four kinds of pacemakers housed in the standardized Irnich human body model, and measured the maximal distance from the induction oven up to which the interference occurred.