A nurse is caring for a client who has hypertension and has a new prescription for lisinopril. The nurse should consult with the provider about a contraindication for which of the following medications in the client's medication administration record?

Diazepam is a long-acting benzodiazepinethat enhances the inhibitory effect of gamma-aminobutyric acid(GABA) within the central nervous system. It is utilized for procedural sedation to induce anxiolysis and amnesia. Its primary safety concern involves dose-dependent depression of the medullaryrespiratory centers.

Rationale:

A.Fever is not a recognized adverse effect of diazepam administration. Benzodiazepines typically do not interfere with the hypothalamic thermoregulatory center to cause an elevation in body temperature. If a client develops a fever during sedation, the nurse should investigate other causes such as an underlying infection or a reaction to a different pharmacological agent.

B.Respiratory depression is the most critical adverse effect to monitor during diazepam administration for moderate sedation. As a central nervous system depressant, diazepam can significantly decrease the respiratory rate and tidal volume, leading to hypoxia or apnea. The nurse must continuously monitor oxygen saturation and capnography to ensure the patient maintains adequate spontaneous ventilation and airway patency.

C.Hypertension is unlikely to occur with diazepam; rather, the drug often causes a slight decrease in blood pressure due to reduced anxiety and systemic vasodilation. Benzodiazepines do not stimulate the sympathetic nervous system. Monitoring for hypotension and bradycardia is more appropriate when assessing the hemodynamic stability of a client undergoing moderate sedation with this agent.

D.Hyperreflexia is an exaggerated reflex response that is inconsistent with the pharmacological profile of benzodiazepines. Diazepam acts as a muscle relaxant and anxiolytic, which typically results in diminished or normal reflexes. Hyperreflexia is more commonly associated with upper motor neuron lesions or certain drug withdrawal states rather than acute sedation with GABAergic medications.

Pioglitazone is a thiazolidinedioneantidiabetic agent that enhances insulin sensitivityby activating the peroxisome proliferator-activated receptor-gamma. It primarily addresses insulin resistancein peripheral tissues, but its use is restricted in patients with established heart failure due to risk of volume overload.

Rationale:

A.Fluid retention is a significant adverse effect of pioglitazone because the medication promotes sodium reabsorption in the renal distal tubules. This expanded plasma volume can lead to peripheral edema and potentially precipitate or worsen heart failure in susceptible individuals. The nurse must monitor the client for rapid weight gain, dyspnea, and bilateral lower extremity swelling during the course of therapy.

B.Tinnitus is not a recognized adverse effect associated with the use of thiazolidinediones like pioglitazone. It is more commonly linked to ototoxic medications such as aminoglycosides or high-dose salicylates. A client reporting ringing in the ears while taking pioglitazone should be evaluated for other pharmacological or physiological causes unrelated to their antidiabetic regimen.

C.Insomnia is not a typical side effect of pioglitazone therapy, as the medication does not exert stimulatory effects on the central nervous system. Patients with diabetes may experience sleep disturbances due to nocturnal hyperglycemia or hypoglycemia, but pioglitazone itself does not disrupt the sleep-wake cycle. The nurse should investigate alternative causes if the client reports difficulty sleeping.

D.Orthostatic hypotension is not associated with pioglitazone; in fact, the fluid retention caused by the drug would be more likely to support or slightly increase blood pressure. Amlodipine or nitrates are more likely to cause postural drops in pressure. Monitoring for dizziness upon standing is not a priority specific to the safety profile of thiazolidinedione medications.