A nurse is caring for a 1-month-old infant who weighs 3500 g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)

A. BP (Blood Pressure): While monitoring blood pressure is important in assessing fluid status, a decrease in blood pressure may indicate inadequate fluid resuscitation rather than adequate replacement. Hypotension may suggest ongoing hypovolemia and the need for further fluid administration.
B. Weight: Weight may provide information about fluid balance over time, but it is not an immediate indicator of adequate fluid replacement during resuscitation. Changes in weight may lag behind changes in fluid status and may not reflect real-time fluid needs.
C. Heart rate: During fluid resuscitation for severe burn injuries, one of the primary goals is to restore intravascular volume and cardiac output. As fluid replacement improves, the heart rate typically decreases, reflecting improved perfusion and reduced sympathetic response.
D. Urine output: Urine output is another critical parameter to monitor during fluid resuscitation, but a decrease in urine output could indicate inadequate fluid replacement rather than adequate replacement.

Correct Answer: B. Position the sterile drape leaving the perineum exposed.

Rationales

A. Lubricate the catheter with water-soluble gel.
Lubrication is important to reduce urethral trauma, but this is not the first step once the sterile field is prepared. It comes after draping and cleansing, just before catheter insertion.

B. Position the sterile drape leaving the perineum exposed.
This is the first action after donning sterile gloves and preparing the field. Draping maintains a sterile environment and provides access to the insertion site. Ensuring sterility from the beginning is critical for preventing catheter-associated infections.

C. Cleanse the client’s meatus with antiseptic solution.
Cleansing the meatus is done after draping to reduce the risk of introducing microorganisms during catheter insertion. Although essential, it is not the very first step once the sterile procedure begins.

D. Attach a prefilled syringe to the catheter inflation hub.
The balloon should not be prepared or inflated until after the catheter has been inserted and urine return is observed. Attaching the syringe too early may risk accidental inflation outside the bladder.