A nurse is providing discharge teaching about warfarin to a client who has deep-vein thrombosis. The nurse should instruct the client to obtain which of the following laboratory tests monthly?

A nurse is reviewing the laboratory results of a client who is receiving gentamicin for staphylococcus. Which of the following findings should the nurse report to the provider immediately?

A nurse is reviewing the medication list of a client who has erectile dysfunction and is requesting a prescription for sildenafil. The nurse should identify that which of the following medications is a contraindication for receiving this medication?

A nurse is reviewing the medical history of a client prior to medication administration and notes a history of an anaphylactic reaction to penicillin. The nurse should identify that which of the following medications is contraindicated for this client?

A nurse is preparing to administer sulfadiazine 150mg/kg PO to divide equally every 6 hr to an adolescent who weighs 88 lb. Available is sulfadiazine 500 mg/tab. How many tablets should the nurse administer per dose? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)