An 85-year-old resident with heart failure and hypertension is taking furosemide, lisinopril, and metoprolol.
A routine lab draw shows a potassium level of 2.9 mEq/L (Reference range: 3.5-5.2 mEq/L).
Which physical sign or symptom is MOST important for the consultant pharmacist to recommend assessing for, given this lab value?
