MAActivator variability in 53 MCS patients at various stages of pre- and post-device implantation. Each set of columns on X axes represent results of MAActivator for one patient. Baseline TEG, preoperative MAActivator result; post-device, MAActivator result within seven days of implantation; middle, MAActivator result at the midpoint of implantation; last, last available MAActivator result; line, MAActivator value of 40 mm.