Option C: PRN comes from the Latin “pro re nata” meaning, “for an occasion that has arisen or as circumstances require”.

Option A: The abbreviation for micro drop is µgtt.

Option B: Gtt (Choice A) is an abbreviation for drop. Dp and Dr are not recognized abbreviation for measurement.

Option A: 1,800 ml is equal to 1.8 liters.

Option B: One teaspoon is equal to 5ml.

A new assistant nurse manager should not make changes until she has had a chance to evaluate staff members, patients, and physicians. Changes must be planned thoroughly and should be based on a need to improve conditions, not just for the sake of change. Written assignments allow all staff members to know their own and others responsibilities and serve as a checklist for the manager, enabling her to gauge whether the unit is being run effectively and whether patients are receiving appropriate care. Telling the staff nurses that she is making changes to benefit their performance should occur only after the nurse has made a thorough evaluation. Evaluations are usually done on a yearly basis or as needed.

A 24-hour urine output of less than 500 ml in an adult is considered inadequate and may indicate kidney failure. This must be corrected while the patient is in the acute state so that appropriate fluids, electrolytes, and medications can be administered and excreted. Indwelling catheterization is not needed to diagnose trauma, urinary tract infection, or residual urine.

After a patient has vomited, the nurse must inspect the emesis to document color, consistency, and amount. In this situation, the patient recently ingested medication, so the nurse needs to check for remnants of the medication to help determine whether the patient retained enough of it to be effective. The nurse must then notify the physician, who will decide whether to repeat the dose or prescribe an antiemetic.

Drugs that are compatible may be mixed together in one syringe. In the case of insulin, the shorter-acting, clear insulin (regular) should be drawn up before the longer-acting, cloudy insulin (NPH) to ensure accurate measurements.