The nurse performs admission assessment for an older client admitted to the telemetry floor. The client's history reveals type 2 diabetes, mitral valve prolapse, and hypertension. Which assessment information is an important indication of risk for heart failure (HF)?
1) The patient takes furosemide (Lasix) 20 mg/day.
2) The patient's potassium level is 4.7 mEq/L.
3) The patient is an African American man.
4) The patient's age is greater than 65.