BIOL 2P98 Lecture Notes - Lecture 15: Thyroid, Squatting Position, Menstrual Cycle
17 Feb 2016
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Document Summary
A 34-year-old woman has a 3-month history of nervousness, tremor, palpitations, increased sweating, and discomfort with heat. She had lost 15 pounds despite increased food intake. She also noted muscle weakness and easy fatigability with exercise to which she was ordinarily accustomed. On physical examination, pulse was 110beats/min at rest and increased to 150beats/min with 30 seconds of rapid stair climbing. Blood pressure was 150/60 and respirations were 20/min. Her skin was warm and moist, her speech was rapid, her gaze had a stare quality, and her movements were hyperkinetic. She exhibited a tremor and very rapid reflexes, and she was unable to rise without assistance from a squatting position. Laboratory studies showed a total serum t4 level of 26 g/dl (normal 5 to 12), a free t4 of 4. 1ng/dl (normal 0. 8 to 2. 4), and a serum tsh of. A 24-hour uptake of radioactive iodine was 70% (normal 8% to.
