Can subclinical hypothyroidism cause myxedema coma?

While the patient's signs and symptoms mimic myxedema coma, he does not have, by definition, "myxedema" (severe hypothyroidism). The patient's normal FT4 can't be explained by his taking his levothyroxine that morning, given the 7-day half-life of levothyroxine. If he hadn't been taking his medicati...

Agree with Dr. Cooper. Also, there are a few case reports describing complete AV block from uncontrolled hypothyroidism (Mire Waberi et al., PMID 36582852). It is possible that this is the alternative explanation for poor circulation and likely precipitation of heart failure in this elderly gentlema...