A client with a bacterial skin infection is prescribed cephalexin (Keflex).
The nurse should instruct the client to report which adverse effect of this medication?

Ceftriaxone (Rocephin) is athird-generation cephalosporin antibioticthat works byinterfering with the formation of bacterial cell walls.It is effective againstgram-negative bacteria, such asNeisseria gonorrhoeaeandHaemophilus species, which are common causes of bacterial meningitis.

Choice A is wrong because ceftriaxone is less active againstgram-positive bacteria, such asStaphylococcusandStreptococcusspecies.

Choice C is wrong because ceftriaxone is not effective againstanaerobic bacteria, which are bacteria that do not require oxygen to grow.Anaerobic bacteria are usually treated withmetronidazoleorclindamycin.

Choice D is wrong because ceftriaxone can treat bothaerobicandanaerobicgram-negative bacteria, but not all aerobic bacteria are gram-negative.

Aerobic bacteria are bacteria that require oxygen to grow.Some examples of aerobic gram-positive bacteria areListeria monocytogenesandBacillus anthracis, which are resistant to ceftriaxone.

This statement indicates that the client understands that nitrofurantoin (Macrobid) can cause gastrointestinal upset and taking it with food or milk can help reduce this side effect.

Choice B is wrong because drinking at least two liters of water daily is a general measure to prevent urinary tract infections (UTIs), not a specific instruction for nitrofurantoin.

Choice C is wrong because the client should complete the full course of antibiotics even if they feel better, to avoid recurrence or resistance of the infection.

Choice D is wrong because using a straw to drink this medication is not necessary or helpful.

Nitrofurantoin is an oral capsule, not a liquid.Using a straw may be advised for liquid medications that can stain the teeth, such as iron supplements.