He has developed pneumonia and is on a respirator. He can not give a history. Exam does not reveal any evidence of hypothyroidism. There is no goiter. She is 4 weeks late for her menstrual period.
Physical exam shows a small goiter.
A 76 year old woman presents with the new onset of atrial fibrillation. She has no history of heart disease. She has recently noticed increasing fatigue, but otherwise has no complaints. Physical exam reveals a thin woman who is somewhat short of breath. The pulse is irregular at a rate of 135 beats per minute.