A client who is taking an oral contraceptive receives a new prescription for erythromycin. Which instruction should the nurse provide to the client?

Choice A reason: Determining when the last dose was administered is important to ensure safe and effective pain management, but it is not the first action that the nurse should implement. The nurse should first assess the client's pain level and intensity before deciding on the appropriate dose and frequency of pain medication.

Choice B reason: Encouraging the client to use diversional thoughts to manage pain is a non-pharmacological intervention that can help reduce pain perception and anxiety, but it is not sufficient to address severe or acute pain. The nurse should first assess the client's pain level and intensity before suggesting any complementary or alternative therapies.

Choice C reason: Asking the client to rate the current level of pain using a pain scale is the first action that the nurse should implement, as it can help quantify and communicate the client's pain experience and guide the nurse's decision on pain medication. The nurse should use a valid and reliable pain scale that is appropriate for the client's age, cognitive ability, and language preference.

Choice D reason: Reviewing the history for a past use of recreational drugs is relevant to assess the client's risk of addiction or tolerance to pain medication, but it is not the first action that the nurse should implement. The nurse should first assess the client's pain level and intensity before considering any factors that may influence pain management.

Choice A reason: Hypertension is not a typical sign of an allergic reaction to piperacillin-tazobactam, which is an antibiotic. It may be caused by other factors, such as pain, anxiety, or renal impairment. The nurse should monitor the client's blood pressure and report any abnormal findings.

Choice B reason: Bradycardia is not a common or serious side effect of piperacillin-tazobactam. It may be related to other medications, such as beta-blockers, or underlying cardiac conditions. The nurse should check the client's pulse and rhythm and report any changes.

Choice C reason: Pupillary constriction is not associated with piperacillin-tazobactam or an allergic reaction. It may be caused by other drugs, such as opioids, or neurological disorders. The nurse should assess the client's level of consciousness and pupillary response.

Choice D reason: Scratchy throat is a possible sign of anaphylaxis, which is a severe and potentially fatal allergic reaction to piperacillin-tazobactam or any other drug. Other symptoms may include hives, swelling, wheezing, or hypotension. The nurse should stop the infusion immediately and call for help.