Chronic lethargy in a 68 yo woman

Test Results 1

Results of appropriate testing return and show the following:

Serum:

Test (units) Result Results (SI Units)
Thyroid-stimulating hormone (TSH) 88 microIU/mL 88 mIU/L
Thyroxine, Free (T4) 0.4 ng/dL 5.15 pmol/L
Triiodothyronine, free (T3) 0.8 pg/mL 1.2 pmol/L
Sodium 135 mEq/L 135 mmol/L
Potassium 4.3 mEq/L 4.3 mmol/L
Urea nitrogen (BUN) 8 mg/dL 2.9 mmol/L
Creatinine 0.9 mg/dL 80 micromol/L

Blood:

Test (units) Result Results (SI Units)
Hemoglobin 9.8 g/dL 98 g/L
Leukocytes 6,700/mcL 6.7 x 109/L
Platelets 159,000/mcL 159 x 109/L
Mean corpuscular volume (MCV) 88 fL N/A
Mean corpuscular hemoglobin concentration (MCHC) 34 g/dL 340 g/L
  • Chest x-ray: Small volume fluid in the right interlobar fissure, mild bibasilar atelectasis, enlarged heart size.

  • Head CT: Normal