MSRA-0402

MSRA-0402

During a geriatrics ward round, you assess a 87-year-old woman who was admitted with community acquired pneumonia and AKI requiring IV antibiotics and fluids. She was delirious on admission but has been improving. Her confusion screen bloods show abnormal thyroid function tests:
Calcium 2.2 mmol/L (2.1 – 2.6)
Phosphate 1.0 mmol/L (0.8 – 1.4)
Magnesium 0.8 mmol/L (0.7 – 1.0)
Vitamin B12 550 pg/ml (110 – 1500)
Folate 5.6 µg/ml (2.5 – 20)
TSH 4.6 mU/L (0.5 – 5.5)
Free T4 6.0 pmol/L (9.0 – 18)
Free T3 3.6 pmol/L (4 – 7.4)
She is currently feeling much better on day 6 of her 7 day course of antibiotics and is asymptomatic. She takes bisoprolol, digoxin, ramipril, atorvastatin, and rivaroxaban regularly.
What is the appropriate course of action for her abnormal thyroid function tests?