AIM: In this article, the hemodynamic, humoral, and immunological perturbations following brain death (BD) are going to be discussed in a stepwise manner. MATERIALS AND METHODS: BD produces derangements in cardiac function, through a not-yet-well-explained mechanism. Using literature review, we attempted to delineate the "pathophysiology" involved. RESULTS: A severe a-adrenergic stimulation following catecholamine storm results in conditions such that the pulmonary capillary pressure is massively increased. Furthermore, cytokine up-regulation, endothelial expression molecules, and neutrophil infiltration produce tissue damage. The end result reflects myocardial necrosis due to reduction of the calcium ATPase activity that leads to myocyte calcium overload and cell death. CONCLUSIONS: Delineation of the mechanisms responsible for donor heart dysfunction (DHD) would be presented. Furthermore, an attempt would be made to apply this knowledge into the clinical practice in order to increase the suitability of donor hearts for transplantation.
AIM: In this article, the hemodynamic, humoral, and immunological perturbations following brain death (BD) are going to be discussed in a stepwise manner. MATERIALS AND METHODS:BD produces derangements in cardiac function, through a not-yet-well-explained mechanism. Using literature review, we attempted to delineate the "pathophysiology" involved. RESULTS: A severe a-adrenergic stimulation following catecholamine storm results in conditions such that the pulmonary capillary pressure is massively increased. Furthermore, cytokine up-regulation, endothelial expression molecules, and neutrophil infiltration produce tissue damage. The end result reflects myocardial necrosis due to reduction of the calcium ATPase activity that leads to myocyte calcium overload and cell death. CONCLUSIONS: Delineation of the mechanisms responsible for donorheart dysfunction (DHD) would be presented. Furthermore, an attempt would be made to apply this knowledge into the clinical practice in order to increase the suitability of donor hearts for transplantation.
Authors: Xenia I Borbely; Vijay Krishnamoorthy; Shan Modi; Ali Rowhani-Rahbar; Edward Gibbons; Michael J Souter; Monica S Vavilala Journal: Neurocrit Care Date: 2015-08 Impact factor: 3.210
Authors: Vijay Krishnamoorthy; Xenia Borbely; Ali Rowhani-Rahbar; Michael J Souter; Edward Gibbons; Monica S Vavilala Journal: Pediatr Crit Care Med Date: 2015-05 Impact factor: 3.624
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