This would cause what we term as Myxedema coma. Hypothyroidism lead to decreased mental status, hypothermia (decrease in body temperature), and other symptoms. The function of virtually every organ system and the activity of many metabolic pathways are slowed in severe hypothyroidism. The hallmarks of myxedema coma are decreased mental status and hypothermia, but hypotension (low BP), bradycardia (low pulse), hyponatremia (decreased sodium), hypoglycemia (decreased blood sugar), and hypoventilation (respiratory problems) are often present as well.
Myxedema coma can occur as the culmination of severe, long-standing hypothyroidism or be precipitated by an acute event such as infection, myocardial infarction, cold exposure, or the administration of sedative drugs, especially opiates. Please read this resource;
Please feel free for your follow up questions.
Thanks for the so thorough information. I am so privileged to assist you. I can just imagine, how strong you have been all these years.
It is difficult to say exactly how the coma ensues as there are wide spectrum of symptoms by which it ensues; but with your description you were very close to the getting it. This could have started with a deep sleep. In your case treatment would have been effective as they would know the cause. In many cases cause of coma is diagnosed very late. Still it was a close shave!
Withdrawal of thyroid hormone therapy has traditionally been required before radioiodine imaging in order to raise the serum TSH concentration and stimulate thyroid tissue for tracer uptake. However, this practice results in temporary hypothyroidism, and a significant decline in quality of life when compared to rhTSH use (recombinant human TSH, which you mentioned as thyrogen scan). This is effective and sensitive method and in your case would be prudent.
It is pleasure assisting you.
You are welcome.
Best wishes and kindest regards.