The LPN/LVN prepares to administer the initial doses of furosemide (Lasix) to a client. It is MOST important for the LPN/LVN to review the client's chart for which of the following client data?

1. Allergy to sulfa drugs.
2. Intake and output for the previous 24 hours.
3. Admission weight and current weight.
4. Signs/symptoms of infection.