What is the thyrotoxic storm?

Unusual complication resulting from manipulation of thyroid gland during surgery in pt w/hyperthyroidism, can develop preop, intraop, postop. S&S: Anesthetized pt (increased sympathetic output), Awake pt (nausea, tremor, altered mental status, cardiac arrhythmias, progress to coma in untreated pt Tx: Stop procedure, admin IV BB, propylthiouracil, sodium iodine, steroids. Use cooling blankets and cooled IV fluids reduce pt temperature, carefully monitor O2