Elevated serum concentrations of erythropoietin after xenon anaesthesia in cardiac surgery: secondary analysis of a randomized controlled trial.

known to occur but the haemodynamic changes were much more pronounced in our patient during tumour manipulation and excision compared with phaeochromocytoma. We also suggest that total thyroidectomy and radical neck dissection for cancer is likely to be prolonged and the surgery should be staggered for minimizing haemodynamic changes and the use of an EMG reinforced endotracheal tube for intraoperative recurrent laryngeal nerve monitoring may be helpful.